The specimens sent to the pathologist are mentioned below.
What is specimens ?
A single plant or animal that serves as an illustration of a specific species or type and is subjected to scientific analysis is known as a specimen.
What is pathologist ?
An individual who studies bodies and body tissues is known as a pathologist. He or she is also in charge of running lab tests. A pathologist is a crucial component of the treatment team and aids in the diagnosis of other medical professionals.
A) Kept dry w/ no preservative; immediate diagnosis
B) Sent dry; preservative will dissolve or permanently alter
C) Sent dry; carefully bagged and wrapped
D) Sent dry; handled carefully, no forceps or clamps
E) Placed in preservative such as formalin
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how did matthew meselson and franklin stahl separate dna samples into density bands during their experiment?
Matthew Meselson and Franklin Stahl separated DNA samples into density bands during their experiment using a technique called equilibrium density gradient centrifugation.
This technique involves the separation of molecules based on their density using a centrifuge. The DNA samples are mixed with a heavy isotope, typically cesium- or nitrogen-labeled, and placed in a centrifuge. As the centrifuge spins, the heavier molecules settle towards the bottom of the tube, while the lighter molecules float towards the top. This creates density bands, allowing the researchers to separate the DNA samples based on their density.
Meselson and Stahl used this technique to demonstrate that DNA replication is semi-conservative, where each newly synthesized DNA molecule contains one original strand and one newly synthesized strand. Their experiment is considered a landmark in the field of molecular biology and provided critical evidence for the semi-conservative model of DNA replication.
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What is the basis for the difference in the synthesis of the leading and lagging strand of DNA molecules?
A. Origins of replication occur only at the 5’ end of the molecule
B. DNA ligase works only in the 3’ 5’ direction
C. DNA polymerase can add new nucleotides only to the 3’ end of the growing strand
D. Helicases and single-strand binding proteins work at the 5’ end
DNA ligase brings together the lagging strand's pieces. According to the aforementioned information, "DNA polymerase can link additional nucleotides to only the 3' end of the developing strand." Correct Option is (C).
A lagging strand replicates intermittently, creating brief fragments, whereas a leading strand repeats continuously. This is the main distinction between lagging and leading strands.
The leading strand is formed by adding nucleotides to the 3' end of the developing strand, and the lagging strand is synthesized by adding nucleotides to the 5' end. The leading strand is created in brief segments that are then joined together, whereas the lagging strand is created constantly.
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Draw the structures of the precursors to (r)-2-methylbutanenitrile, including stereochemistry, for this synthesis
The structure of the (r)-2-methyl-butane nitrile is attached below.
Butyronitrile is a colorless liquid with a sharp choking odor. Used as pharmaceutical intermediate chemical and poultry medicine. Nitriles are organic compounds in organic chemistry, also called cyano compounds. This class of organic compounds contains cyanide as a functional group with the formula -C ≡ N. Inorganic compounds with -CN groups are called cyanides. Nitriles are organic chemicals containing a cyano functional group (subunit) CN- in which carbon and nitrogen atoms share a triple bond. H. C≡N-. The general formula for nitriles is RCN, where R is an organic group.
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when a major evolutionary event takes place and a new species is formed, what has taken place?
You made a wet mount slide of each blood/solution mixture when testing for tonicity. What did you learn from this?
a Both opaque tubes contained completely normal-looking blood cells.
b The difference in tonicity did not affect the red blood cells at all.
c Temperature had a significant effect on the red blood cells.
d The red blood cells were too small to block light.
e In the tube with the highest concentration of solutes, the cells had shriveled (crenated).
The correct answer is Option (e), which states that in the tube with the highest concentration of solutes, the red blood cells had shriveled (crenated).
This indicates that the solution in the tube was hypertonic, and water from the cells moved out, causing them to shrink and shrivel. The other options do not provide information related to the effect of tonicity on red blood cells. A hypertonic solution refers to a solution that has a higher concentration of solutes compared to another solution, usually separated by a semipermeable membrane.
When a cell is placed in a hypertonic solution, water will move out of the cell and into the surrounding solution, causing the cell to shrink and become crenated. This is because the concentration of solutes in the extracellular fluid is higher than that inside the cell, leading to a net movement of water from an area of high concentration (inside the cell) to an area of low concentration (outside the cell). That means, hypertonic solutions have a higher concentration of solutes and a lower concentration of water, which can cause cells to shrink and become dehydrated.
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what is one way in which algal blooms cause harm to the environment?
Answer:
Produce toxins (poisons)
Become too dense
Use up the oxygen in the water
Release harmful gases
Micronutrients are needed in very small amount because:Amost of them are mobile in the plantBmost function as cofactors in enzymesCmost are supplied in large enough quantities in soilDthey play only a minor role in the health of the plant.
Micronutrients are minor parts like nutrients and minerals. They differ from macronutrients, similar to starches, protein, and fat, since they are real just in tiny sums, for the most part. The correct answer is (B) most function as cofactors in enzymes.
Micronutrients are nutrients and minerals required by the body in tiny sums. Be that as it may, their effect on a body's well-being is basic, and lack of any of them can cause serious and, surprisingly, dangerous circumstances.
There are 7 fundamental plant supplement components characterized as micronutrients [boron (B), zinc (Zn), manganese (Mn), iron (Fe), copper (Cu), molybdenum (Mo), chlorine (Cl)]. They comprise altogether under 1% of the dry load of most plants.
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A centrifuged sample of blood shows the following volume fractions: 53% plasma, 1% buffy coat, and 46% erythrocytes. What percent of the blood is composed of leukocytes and platelets? A 46% B 53%C 1% D 47%
The correct answer is (C) 1%. The volume fractions of the blood components add up to 100%. Therefore, the percentage of the blood composed of leukocytes and platelets can be calculated as follows:
Total blood volume = 100%
Plasma volume = 53%
Erythrocyte volume = 46%
Buffy coat volume = 1% (which includes leukocytes and platelets)
Therefore, the percentage of the blood composed of leukocytes and platelets is:
Leukocytes and platelets volume = Buffy coat volume = 1%
Leukocytes and platelets percentage = (Leukocytes and platelets volume / Total blood volume) x 100%
Leukocytes and platelets percentage = (1% / 100%) x 100%
Leukocytes and platelets percentage = 1%
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plasmolysis occurs when are in a environment . A. Hypotonic solution B. Hypertonic solution C. Isotonic solution.
Plasmolysis takes place in a given setting when there is a Hypotonic solution, which has less of solute concentrate than the cell sap
Due to the larger concentration of water outside the cell, water enters the plasmolyzed cell when it is placed in a hypotonic solution (a solution in which the solute concentration is less than the cell sap).The cell then enlarges and stiffens. The term for this is deplasmolysis.The exosmosis, or evacuation of water from the cytoplasm, is brought on by a hypertonic solution. At the same time that the pressure on the wall is removed, the elastic wall shrinks, leading to plasmolysis, a reduction in cell size.
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What is the trichromatic theory of color vision _____?
Answer:
you have to ask
Explanation:
which of these is a major benefit of having dendritic spines?
Option b is the correct. They expand the area that synapses can attach to. Spines may enable neurons to use comparable voltage-sensitive postsynaptic mechanisms at all excitatory synapses.
Independent of their placement in the dendritic tree, because they lessen the impact of local dendritic geometry on EPSP characteristics. We come to the conclusion that dendrites fundamentally enhance coincidence detection, boosting the computing power of numerous nervous system neurons. It has been hypothesised that mushroom spines are more stable memory spines, whilst the more plastic thin spines are learning spines, since small, thin dendritic spines are most likely to experience these structural changes, whereas massive, so-called "mushroom" spines tend to maintain their form.
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Which of these do dendritic spines do?
A. They synthesize proteins.
B. They increase the surface area available for synapses.
C. They hold the neuron in position.
D. They metabolize fuels to provide energy for the rest of
the neuron.
what effect do machinery, irrigation and chemicals required by new crop varieties have on soil
Answer:
your answer is
Explanation:
The effects of machinery, irrigation, and chemicals required by new crop varieties on soil can be both positive and negative. Here are some of the effects:
Soil compaction: The use of heavy machinery can lead to soil compaction, which reduces the ability of the soil to absorb water and nutrients.
Soil erosion: The use of machinery and irrigation can cause soil erosion, which can lead to the loss of topsoil and nutrients.
Soil salinization: Overuse of irrigation water can lead to the buildup of salt in the soil, making it difficult for plants to grow.
Soil degradation: The excessive use of chemicals such as fertilizers, herbicides, and pesticides can lead to soil degradation, reducing the soil's fertility and organic matter.
Soil contamination: The use of chemicals can also lead to soil contamination, affecting the quality of the soil and the plants grown in it.
However, there are also positive effects of modern farming practices on soil. For example, irrigation can help maintain moisture levels, leading to improved crop yields, while the use of machinery can help reduce labor costs and increase efficiency. Moreover, modern crop varieties often require less land to produce the same amount of food, which can help prevent soil erosion and habitat destruction. Proper management practices, such as crop rotation and the use of cover crops, can also help improve soil health and reduce the negative effects of modern farming practices.
The stories seem as tall as the lake is deep. For hundreds of years, visitors to Scotland's Loch Ness have described seeing a `monster. Some believe it lurks in the depths of the loch, or lake.
But now the legend of "Nessie" may have no place left to hide. A New Zealand scientist is leading an international team to the lake next month. They will take samples of the murky waters and conduct DNA tests to determine what species live there.
University of Otago professor Neil Gemmell says he's no believer in Nessie, but he wants to take people on an adventure and communicate some science along the way. Besides, he says, his kids think it's one of the coolest things he's ever done.
One of the more far-fetched theories is that Nessie is a long-necked plesiosaur. Plesiosaurs were long-necked marine animals that lived during the time of dinosaurs. The theory is that the reptile somehow survived the period when all dinosaurs became extinct. Another theory is that the monster is actually a sturgeon or giant catfish. Many believe the sightings are hoaxes or can be explained by floating logs or strong winds. Gemmell said that when creatures move about in the water, they leave behind tiny fragments of DNA. It comes from their skin, feathers, scales, and urine.
He said his team will take 300 samples of water from different points around the lake and at different depths. They will filter the organic material and extract the DNA, he said, sequencing it by using technology originally created for the human genome project.
He said the DNA results will then be compared against a database of known species. He said they should have answers by the end of the year."I'm going into this thinking it's unlikely there is a monster, but I want to test that hypothesis," Gemmell said. "What we'll get is a really nice survey of the biodiversity of Loch Ness."
He said the real discoveries may come in determining things like the prevalence of invasive species.
"I hope he and his cohorts find something, although I think they'll be battling," Matheson said. "Still, it's a good way to get a trip to Scotland," Gemmell said that even if they don't find any monster DNA, it won't deter some Nessie believers. He said they've already been offering him theories, like how Nessie might be on vacation after swimming to the sea via hidden underwater caves. Another is that the creature might be extraterrestrial and not leave behind any DNA.
"In our lives, we want there still to be mysteries, some of which we will ultimately solve," Gemmell said. "That's part of the spirit of discovery. And sometimes, what you find may not be what you were expecting."
Who - New Zealand scientist
What - taking water samples
When - next month
Where - Scotland
Why - determined if the loch ness monster is real
How - testing DNA samples
Use 5 Ws and H to write a summary of the article above, including a main idea (first sentence) and at least 3 supporting details.
Neil Gemmell, a lecturer at the University of Otago, said he doesn't believe in Nessie, but he still desires to take tourists on an experience and interact with them.
Describe an adventure?A book detailing his numerous daring expeditions. the experience of risks the spirit of exploration. : a memorable or interesting experience. It could also be a daring, typically dangerous activity with a hazard of failure. Adventures might include physically risky activities like exploring, skydiving, mountain biking, river rafting, or engaging in extreme sports.
Describe a book?A collection of printed, blank, or written sheets bundled within a front and rear cover. a large printed or written literary work.: an address book Pages are the pieces of paper that make up a book. The pages contain
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What is an example of two different species?
An example of two different species is the African elephant (Loxodonta africana) and the Asian elephant (Elephas maximus).
Although both species belong to the same family (Elephantidae) and share many physical characteristics, such as their large size and long trunks, they are considered distinct species because they have significant genetic and morphological differences.African elephants are larger and have longer tusks than Asian elephants, and their ears are shaped like the African continent, while Asian elephants have smaller ears that are rounded. In terms of behavior, African elephants tend to live in large herds, while Asian elephants are more solitary or live in smaller family groups.
While African and Asian elephants can interbreed in captivity, their offspring, called hybrids, are usually sterile and unable to produce viable offspring. This is a common characteristic of species, as they are defined as groups of organisms that can interbreed and produce fertile offspring. The distinct genetic and morphological differences between African and Asian elephants, as well as their inability to produce fertile offspring, confirm their classification as separate species.
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Which two phenomena are evidence that gravitational forces are attractive? Select ,begin emphasis,two,end emphasis, state
The two phenomena that are evidence that gravitational forces are attractive are the rise and fall of the tides and a dropped object always falls toward Earth. Here options A and C are the correct answer.
The rise and fall of the tides: The gravitational force of the Moon and the Sun pulls on the water in the oceans, causing the tides to rise and fall.
A dropped object always falls toward Earth: The Earth's gravity pulls objects towards its center, causing them to accelerate toward the ground when dropped. This is evidence that gravity is an attractive force.
Gravitational forces are always attractive, meaning that two objects with mass will always exert a force on each other that pulls them closer together. This force is proportional to the mass of the objects and inversely proportional to the square of the distance between them. The larger the mass of the objects, the stronger the gravitational force between them will be, and the farther apart they are, the weaker the force will be.
Complete question:
Which two phenomena are evidence that gravitational forces are attractive? Select two statements.
A. the rise and fall of the tides
B. atoms being held together in a molecule
C. a dropped object always falls toward Earth
D. microwaves passing through the atmosphere into space
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100 POINTS!!!111!!!
BIOLOGY QUESTION PLS HELP!!
Procedure:
Plant Tissues — Part 1
Review each image in your lab activity slide show. Identify the correct tissue or organ below based on each individual slide. Several of these choices may be used multiple times.
phloem
stoma
xylem
guard cells
dermal
ground
vascular
Slide 1 Slide 2 Slide 3 Slide 4 Slide 5
a. a. a. a. a.
b. b. b. b. b.
c. c. c.
d.
Flower Dissection — Part 2
Pick a flower from your yard, a public location, or somewhere in your neighborhood.
Start by removing the sepals of the flower with a tweezer. If you do not have a tweezer, a small pair of scissors will also work. It may be easiest to do this if you hold the flower with your finger from below the pedicel (small stalk just underneath the flower) and begin to remove the sepals with a pair of tweezers.
Using tweezers, place the sepals on the labelled printable worksheet, and tape them in place.
Repeat the same procedure for the petals and pistil.
Remove all but one of the stamens and tape them onto the worksheet.
On your printable worksheet, you should have sepals, petals, stamens and one pistil.
Take a picture of your worksheet with the flower pieces placed correctly, and save it on your computer. You will attach and submit this with your assessment questions.
Data:
Flower Dissection
Name of Flower Component Piece of Flower from Lab Function
Sepal
Petals
Stamen
Pistil
Analysis & Conclusion — Part 3
Plant Tissues
What are three characteristics that all species belonging to the plant kingdom have in common?
How will the numbers of stomata differ in tropical plants and desert plants? How does this help protect the health of a plant?
If a plant's xylem and phloem become damaged, what type of damage will result within the plant? Describe the different roles on the xylem and phloem in your answer.
Why do we compare the dermal tissue of plants to human skin? Explain your answer.
Would a plant be able to survive if the ground tissue was damaged? Explain your answer.
Flowering Reproduction
Describe how flowering plants reproduce.
How do flowers help other organisms in our environment?
Which parts of a plant are responsible for reproduction? Describe the role that each of them will play.
Describe what occurs during the process of seed development.
Based on your knowledge of flowers, why do you think most flowers are bright in color?
Answer:
1. Three characteristics that all species belonging to the plant kingdom have in common are:
They are multicellular organisms
They are autotrophic, meaning they can produce their own food through photosynthesis
They have cell walls made of cellulose.
2. The numbers of stomata will differ in tropical plants and desert plants. Tropical plants tend to have more stomata on the underside of their leaves, while desert plants tend to have more stomata on the top of their leaves or in sunken pits. This helps protect the health of a plant because stomata are responsible for gas exchange, and having more stomata on the underside of the leaves helps reduce water loss through transpiration in humid environments. In contrast, having more stomata on the top of the leaves or in sunken pits can help reduce water loss in arid environments.If a plant's xylem and phloem become damaged, the plant will not be able to transport water, nutrients, and sugars throughout the plant. This can result in wilted leaves, stunted growth, and eventually death.
3. The xylem is responsible for transporting water and minerals from the roots to the rest of the plant, while the phloem is responsible for transporting sugars from the leaves to the rest of the plant.
4. We compare the dermal tissue of plants to human skin because they both serve as the protective outer layer of the organism. Dermal tissue in plants is the outermost layer of cells that covers the plant's surface and helps protect it from damage and water loss.
5. A plant may be able to survive if the ground tissue was damaged, depending on the extent of the damage. Ground tissue is responsible for photosynthesis, storage, and support in the plant. If only a small portion of the ground tissue is damaged, the plant may still be able to function, but if a significant amount of ground tissue is damaged, the plant may not be able to produce enough energy to survive.
Flowering Reproduction:
6. Flowering plants reproduce sexually. The male reproductive organs (stamens) produce pollen, which is transferred to the female reproductive organs (pistil) through the process of pollination. The pollen then fertilizes the ovules in the ovary, which eventually develop into seeds.
7. Flowers help other organisms in our environment by providing food and habitat for pollinators such as bees, butterflies, and birds. This helps promote biodiversity and maintain ecosystems.
8. The parts of a plant responsible for reproduction are the stamen (male reproductive organ), pistil (female reproductive organ), and the ovules (located in the ovary of the pistil). The stamen produces pollen, which contains the male gametes. The pistil contains the stigma (where the pollen lands), the style (a tube that leads to the ovary), and the ovary (where the ovules are located).
9. During the process of seed development, the fertilized ovule develops into a seed, which contains an embryo and a food supply (endosperm). The ovary develops into a fruit, which helps protect and disperse the seeds.
10. Most flowers are bright in color to attract pollinators such as bees, butterflies, and birds. The bright colors and sweet fragrances of flowers help to advertise the presence of nectar and pollen, which are the rewards for the pollinators' services.
what is the percentage of water in the body
The percentage of water in the human body varies depending on factors such as age, sex, and body composition. On average, the human body is about 60% water.
However, this percentage can vary from about 45% to 75% depending on the individual. For example, men tend to have a higher percentage of water in their bodies than women, as men generally have more muscle mass, which contains more water than fat tissue. Infants have the highest percentage of water in their bodies, with around 75% of their body weight consisting of water. Water is an essential component of the human body, and it plays a crucial role in many physiological processes, including temperature regulation, nutrient transport, waste removal, and the lubrication of joints. Adequate hydration is important for maintaining overall health and well-being.
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input from the retinas of both eyes is processed in the
Input from the retinas of both eyes is processed in the brain.
More specifically, the visual information captured by each retina is Transmitted via the optic nerve to the brain, where it is processed in a Number of different areas. One important area of the brain for visual Processing is the primary visual cortex, which is located in the occipital Lobe at the back of the brain.
In the primary visual cortex, the visual information from each eye is initially processed separately, but then combined to create a single image. This process, called binocular vision.
After the primary visual cortex, the visual information is further Processed in other areas of the brain, such as the temporal lobe, which is Important for recognizing objects, and the parietal lobe. Ultimately, this processing of visual Information allows us to see and interpret the world around us.
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What do snoring respirations in an unconscious patient indicate?
Select one:
A. Blood or other secretions in the upper airway
B. Spasm of the larynx and closure of the vocal cords
C. Severe upper airway obstruction from a foreign body
D. Partial occlusion of the posterior pharynx by the tongue
An unconscious patient's snoring breathing signals that the tongue is partially blocking the posterior pharynx.
What is the meaning of unconscious action?Not conscious; lacking consciousness, sensation, or awareness. momentary loss of consciousness not noticed at the consciousness level; taking place underneath the level of rational awareness: uncontrollable urge Unconscious social slight: something done without conscious thought, planning, or intent.
What happens during unconscious?Any person is said to be unconscious when they are unable to react to stimuli or appear to be asleep. Someone could pass out for just a few seconds, as when someone faints, or they could pass out for a while. Sleeping people don't react to shaking or loud noises.
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what is the general cause of all mitochondrial diseases
Answer:
What is the general cause of all mitochondrial diseases
Explanation:
Mitochondrial diseases are caused by genetic mutations. Genes provide the instructions for making proteins, and the genes involved in mitochondrial disease normally make proteins that work inside mitochondria.
how can the cell theory help to determine if the material is living or nonliving?
The cell theory is a fundamental concept in biology that states that all living organisms are composed of one or more cells and that cells are the basic unit of life.
Nonliving materials, on the other hand, do not have cells and cannot carry out the processes that are essential for life. Therefore, the presence or absence of cells is a key factor in determining whether a material is living or nonliving.
Additionally, the cell theory states that cells arise from pre-existing cells through the process of cell division. This means that living organisms can reproduce and pass on their genetic information to their offspring through their cells. Nonliving materials, on the other hand, cannot reproduce through cell division.
By considering the principles of the cell theory, we can differentiate between living and nonliving materials based on the presence or absence of cells and the ability to reproduce through cell division.
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which proposed representational system is the least likely to be in place in the human visual system? a. specificity coding b. distributed coding c. representation by a small number of neurons d. sparse coding
The proposed visual system is indeed the percent less likely to be used by the human eyes because of its specificity coding.
What does the human eyes have specific training for?Detecting all electromagnetic energy what surrounds us is the process of seeing. Humans can only see a small portion of the electromagnetic spectrum. Shape, color, velocity, and depth are all sensed either by visual photoreceptors on the retina.
Where is a significant portion of the visual data handled in this place?ocular cortex Here, processing of the images coming from your retina starts. The visual cortex, which has six layers, is the first part of your brain to analyze and recognize what it sees. These layers also handle form, color, and motion as well as depth perception.
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how do veins vary their resistance to blood flow
Blood flow reduces as vessel diameter shrinks due to an increase in resistance. By the time blood exits the capillaries and enters the venules, very little pressure is still there.
Ventricular contraction does not directly result in blood flow through the veins. The resistance to blood flow within a single conduit is primarily influenced by the blood's viscosity, length, and vessel diameter (or radius). The vessel diameter is the one of these three factors that is most significant both statistically and physiologically. Because there is little resistance, the pressure drops more slowly in systemic veins. Up to 70% of the blood in circulation can be held in the venous system at one time due to its high compliance.
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the ripened ovary of a flower, which is adapted to disperse seeds, is called a(n)…
Fruit. Several plant species rely heavily on their fruits for seed distribution. Dehiscent fruits, like poppy capsules, usually include seeds that are spread directly from the fruits, which may still be attached to the plant.
The fruit only serves to spread its seeds. Fruit seeds need to be spread far from the parent plant so they can grow in a favourable environment with fewer competitions.
While some fruits can disseminate on their own thanks to internal systems, others need the assistance of wind, water, and animals. The structure, chemistry, and size of the seed are altered to aid in dissemination. Fruit that is distributed by wind is light and may have wings. like the dandelion, which has hairy, light structures that are good for dissemination.
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Name the artery that carries deoxygenated blood from the heart to the lungs?
A. Renal artery
B. Pulmonary artery
C. Hepatic artery
D. Aorta
Answer:A.Pulmonary Arteries
Explanation:
Your pulmonary arteries carry blood from your heart to your lungs. They're the only arteries in your body that carry oxygen-poor (deoxygenated) blood.
what is a body system definition
A body system is a group of components that can cooperate to achieve growth, reproduction, and survival as a single goal.
Body systems are collections of organs and tissues that collaborate to carry out crucial functions for the body. If an organ performs multiple functions, it may be a member of more than one body system. Some tissues and organs have a function in just one system of the body. The neurological, digestive, and respiratory systems are a few examples.
For a complex creature to be able to live and reproduce, all of its bodily systems must function.
1) Taking up oxygen for cellular respiration.
2) Getting rid of carbon dioxide created during cellular respiration.
3) Consuming and processing food in order to gain sugars and other nutrients.
4) Moving essential elements, such nutrition and oxygen, to all body cells.
5) Removing poisonous waste from the body.
6) Reacting to modifications in the external environment.
7) Guarding the organs from the outside elements.
8) Fighting off germs.
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_____ is a continuous contraction that shows no evidence of relacation
Tetanus/Lock jaw.. A smooth, continuous contraction without any signs of relaxation is known as a complete tetanus (fused) contraction.
The process in which a muscle experiences prolonged contraction with no relaxation is known as a tetanic contraction. Isotonic contractions are those in which the muscle length changes but the tension remains constant. They come in two varieties: eccentric and concentric (muscle shortening) (muscle elongation). Isometric contractions occur when the muscle length stays constant. Isometric contraction, for instance, occurs when performing a biceps curl while holding the weight stationary rather than actively raising or lowering it.
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_____ is a continuous contraction that shows no evidence of relaxation.
Which one of the following statements concerning protein hormones is correct?
a.A protein hormone binds to a receptor within the cell or on the nucleus of the cell, thereby directly affecting protein synthesis.
b.A protein hormone, once bound to its receptor, activates adenylyl cyclase, which leads to eventual phosphorylation of other cellular enzymes.
c.The complex of protein hormone/receptor diffuses into the cell nucleus and has a suppressing effect on RNA synthesis.
d.All protein hormones are bound to a transport protein to move through the circulation.
A protein hormone binds to a receptor within the cell or on the nucleus of the cell, thereby directly affecting protein synthesis. This is the correct statement. So the correct option is A.
Any class of substances consisting of long chain polymers of amino acids that are secreted in the blood streams that are processed to distant organs. When a peptide hormone binds to a receptor on the surface of the cell, a second messenger occurs in the cytoplasm, which triggers the signal transduction leading to the cellular responses. The list of protein hormones:
amylinangiotensinatrial natriuretic peptide (ANP)calcitonincholecystokinin (CCK)gastringhrelinglucagongrowth hormonefollicle-stimulating hormone (FSH)insulinleptinluteinizing hormone (LH)melanocyte-stimulating hormone (MSH)oxytocinparathyroid hormone (PTH)prolactinreninsomatostatinthyroid-stimulating hormone (TSH)thyrotropin-releasing hormone (TRH)For more information on protein hormone, visit:
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Which one of the following statements about endocytosis is incorrect? A)Endocytic vesicles can be formed when a receptor molecule binds a specific cargo molecule. B)All cell types are capable of phagocytosis, a form of endocytosis. C)Internalization of extracellular fluid is a form of endocytosis. D)Endocytosis is an invagination of the plasma membrane. E)All of these statements about endocytosis are correct.
Option b) All cell types are capable of phagocytosis, a form of is one of the following statements about endocytosis is incorrect endocytosis.
In biology, what is endocytosis?Christian de Duve invented the word "endocytosis" in 1963 to describe both the absorption of big particles (such as bacteria) and the uptake of fluids or macromolecules in small vesicles. The former is known as phagocytosis (cell devouring), whereas the latter is known as pinocytosis (cell drinking).
Endocytosis is a biological mechanism that allows chemicals to enter the cell. The material to be internalized is surrounded by an area of cell membrane, which then buds off inside the cell to form a vesicle containing the ingested material.
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In whitetail deer, females seldom grow antlers. Which BEST explains why male whitetail deer grow antlers but females seldom grow antlers?A. Female deer have no need for antlers.B. Male deer are older than female deer.C. Antler growth is controlled by genes.D. Antler growth depends on behavior.
Male whitetail deer develop prongs however females only from time to time develop horns. qualities constrain prong development. (A) Female deer have no need for antlers.
The environment is characterized as a framework that comprises every single living organic entity and the actual parts with which the living creatures collaborate. The abiotic and biotic factors are connected to one another through supplement cycles and streams of energy.
Energy enters the framework through the course of photosynthesis. Creatures assume a significant part in the movement of energy as they feed on each other. As a consequence of this exchange of issue and energy happens through the framework. Living organic entities likewise impact the amount of biomass present. By disintegrating dead plants and creatures by microorganisms supplements are delivered back into the dirt.
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