Carbon-14 is an example of radioactive isotope in fossils.
What are radioactive isotopes?Radioactive isotopes can be used to date fossils, as well as rocks and other geologic materials. The technique is called radiometric dating, and it involves measuring the levels of isotopes in a sample. Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons in the nucleus. Some isotopes, known as radioactive isotopes, have unstable nuclei that emit particles and energy over time in a process called radioactive decay.
Radioactive isotopes such as Potassium-Argon and Uranium-Lead dating can also be used to date fossils and rocks.
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how is the information between our dna structured
The similarly alongside the cladogram you move,the greater variations in DNA the organisms have compared to the common ancestor.
What is cladogram?A cladogram has been an evolutionary tree that diagrams the ancestral relationships amongst organisms. DNA sequence analysis of the hemoglobin alpha gene shows that humans and chimpanzees have a more similar sequence to each other than they do to the gorilla’s DNA sequence.
Analogies structure has been body parts that have a similar function but differ in structure. All vertebrate embryos have a tail and gill slits at some point during embryonic development.
Therefore, The similarly alongside the cladogram you move,the greater variations in DNA the organisms have compared to the common ancestor.
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Identify a dependent variable measured in the researcher’s experiment. Identify one control that the researcher could use to improve the validity of the experiment. Justify the researcher analyzing blood samples at many intermediate time points instead of at only the beginning and the end of the 20-week period.
Answer:
The dependent variable measured in the researcher’s experiment is the concentration of the drug in the blood samples. One control that the researcher could use to improve the validity of the experiment is to ensure that the same amount of the drug is administered to each participant.
Analyzing blood samples at many intermediate time points instead of at only the beginning and the end of the 20-week period allows the researcher to track changes in the concentration of the drug over time. This gives a more accurate picture of how the drug is metabolized by the body and how it affects the participants.
Explanation:
What might happen if
too much water moved into a cell?
Answer: Cytolysis
Explanation:
Cytolysis is the act of a cell exploding due to that has caused excess water to diffuse into the cell.
can you help with this
In the given question original DNA sequence has amino acid sequence methionine, tryptophan, asparagine, arginine, cysteine, and stop codon, so a mutation in 1 sequence: Transition, 2: Transition, and 3: Transversion.
How does a mutation in the DNA change the protein structure?In the first DNA sequence, the transition mutation changes the amino acid sequence of protein into methionine, stop, asparagine, arginine, and cysteine.
The second amino acid sequence after mutation is methionine, leucine, glutamine, proline, and leucine.
The third amino acid sequence after mutation is methionine, tryptophan, threonine, and alanine.
Therefore, a mutation in the DNA changes the amino acid sequence, which changes the structure and function of the protein.
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Please help!
1.) Explain why the term cycle is used to describe the biogeochemical cycles.
2.) Compare and contrast the carbon and nitrogen cycles. Specifically, identify which happens when either exists in very large quantities in the environment.
What is the end result of mitosis?
A) one cell with two identical copies of DNA
B) two cells with different copies of DNA
C) one cell with two different copies of DNA
Answer:
A) one cell with two identical copies of DNA
Explanation:
The end result of mitosis is one cell with two identical copies of DNA.
Answer: A) one cell with two identical copies of DNA
Explanation: Mitosis is a process of cell division that occurs in somatic cells (non-reproductive cells). It involves a series of steps that result in the formation of two identical daughter cells.
During mitosis, the parent cell undergoes several stages: prophase, metaphase, anaphase, and telophase. In prophase, the DNA condenses into visible chromosomes, and the nuclear membrane begins to break down. In metaphase, the chromosomes align in the middle of the cell. In anaphase, the sister chromatids separate and move towards opposite poles of the cell. Finally, in telophase, the nuclear membranes reform around each set of chromosomes, and the cell begins to divide.
At the end of mitosis, each daughter cell contains the same number and type of chromosomes as the parent cell. This means that each daughter cell has an identical copy of the parent cell's DNA. The division of the cytoplasm then occurs in a process called cytokinesis, resulting in two separate daughter cells.
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what is the name of a misfolded protein?
Based on the following reactions who many not have been listening to your thoughts on recycling?
A. "These are some great ideas. We should try to get more towns to follow this plan."
B. "I did not understand your idea about adding more recycling pick up days. Can you explain that again?"
C. "That's good."
D. "You have some good ideas, but remember, not all plastics can be recycled."
Answer:
C; thats good
Explanation:
Hope this helps!
HELP LIMITED TIME!!!!!!!!!!!!!!!
Changing the Earth's climate results in:
Select one:
1, Rising sea levels
2, Irregular weather patterns
3, All of these
4, Melting ice caps
Answer:
All of these
Explanation:
Changing the Earth's climate can have a number of impacts on the planet and its inhabitants. One potential effect is rising sea levels, as a warmer climate can cause the polar ice caps to melt, increasing the amount of water in the oceans. This can lead to flooding and other coastal hazards. Another effect of climate change is irregular weather patterns, as a changing climate can alter the frequency and intensity of storms, droughts, and other extreme weather events. This can have significant impacts on agriculture, natural systems, and human communities. Finally, changing the Earth's climate can also result in melting ice caps, as rising temperatures can cause the polar ice caps to melt and contribute to rising sea levels. Overall, climate change can have a range of impacts on the Earth and its inhabitants, and understanding these impacts is an important part of addressing this global challenge.
pls help me I am rlly confused
All of an organism's characteristics are inheritable which evolves over millions of years. An example of this is the modern day horse's foot.
What is Evolution?This is referred to as the change in the heritable characteristics of biological populations over successive generations.
All an organism's characteristics can be inherited and evolves over a period of time as a result of the changing environmental conditions which helps them to adjust thereby increasing their chances of survival hence preventing extinction of species.
For example, over millions of years of evolution, many horses lost their side toes and developed a single hoof as a result of them needing to move at faster speeds to evade predators.
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I dont understand what it means. Please help, and if you can give some examples on what im supposed to do that will be great :)
According to the information, we have to draw two branches from Cephalopoda to classificate new orders. Also, we have to draw one branch from each order to mention their common names.
How to organizate the information?
To organizate the information in a good way, we have to identify the brach of Mollusks and then, we have to understand how is the organization of each classification.
We have to follow the instructions, so we have to draw three branches from Mollusks to classificate Cephalopoda, Gastropoda and Bivalve. Once we did that, we must to draw two branches from Cephalopoda to classificate new orders (Octopoda and Teuthida). Finally, we have to draw one branch from each one to mention their common names.
Note: This question is incomplete because there is some information missing. Here is the complete information.
Graph attached
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Ocean currents have a direct effect on climate by an interaction of which systems? (1 point)
O hydrosphere and atmosphere
O geosphere and biosphere
O geosphere and atmosphere
O biosphere and atmosphere
Ocean currents have a direct effect on climate by an interaction of ' geosphere and atmosphere'.
What is the atmosphere?
The atmosphere is basically the layer of gases surrounding the Earth. It is composed of nitrogen (78%), oxygen (21%), and trace amounts of other gases, such as argon, carbon dioxide, and water vapor. The atmosphere protects us from the sun's harmful ultraviolet radiation, helps keep temperatures moderate, and creates the weather patterns that make life possible.
Ocean currents act as a bridge between the atmosphere and the geosphere, transferring heat, moisture, and momentum between the two. This helps to regulate the global climate by moving warm water from the equator to higher latitudes and vice versa. This in turn affects air masses, cloud formation, and precipitation patterns, which can have a great impact on the climate. For example, warm ocean currents can strengthen cyclones, while cold currents can help prevent them. In addition, ocean currents can influence the rate at which heat is absorbed and released into the atmosphere, which can lead to extreme weather events like heat waves and droughts.
Hence, Option C is correct.
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Answer:
A) Hydrosphere and atmosphere
Explanation:
Took the quick check :)
Some individuals in a bird species have brighter feathers than others. The bright-feathered birds more easily attract mates and reproduce more often. Eventually, the bright-feathered birds will
die out in the population
attract fewer mates for reproduction
lose their brighter feathers
become the dominant bird in the population
Brighter feathers, however, give male birds a reproductive advantage and assist them attract female birds for mating. Because of this, populations of birds with brighter plumage continue to exist despite having a higher risk of being eaten by a predator.
Which of the following statements best describes why some birds have colorful feathers?They are used to entice prospective partners. Birds may recognize their own species by using colors and patterns. Birds can camouflage themselves against predators by using different colors. When courting, colors are utilized to draw attention (ie: courtship displays).
Explain the reason(s) for some animals' vivid coloring using at least two instances.Some animals are colored for physical protection, and some frogs can change the color of their skin to regulate their body temperature. Pigments in the skin of some animals prevent sunburn.
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Answer: Its D- become the dominant bird in the population
Explanation: I got it right on the test
Smooth
Smooth
O
Smooth
A.
Smooth
o
Smooth
X
X
Wrinkled
It is true only in the plant world.
Smooth
Smooth
Based on the information above, what would a geneticist say about the example of the
pea plants?
Smooth
Wrinkled
B.
It is based purely on chance.
C. It has no relationship to human transmission of traits.
D. It helps show transmission of traits from parents to offspring.
E. It is too dated to have application in today's world.
Mendel's tests on the pea plant are still relevant today since they demonstrate how traits are passed down through generations, hence option D is correct.
What are pea plant traits?The pea experiment is frequently used in classrooms because peas have distinguishable qualities and it is relatively straightforward to analyze how these traits are inherited.
When a person possesses a dominant characteristic and is heterozygous for that trait, the descendants of that person might also possess a recessive trait.
Therefore, It helps show the transmission of traits from parents to offspring.
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mkaqvzcdwp how many types of plants are there
Answer:
There are more than 60 types of plants
Explanation:
Hope it helps you
PLS RATE AS BRAINLIEST ANSWER
what type of transport is used for glucose in blood and intenstinal cells
HELP I AM CONF'usSED URGENT
determined by evolution, have evolved
cause of supraventricular tachycardia?
Superventricular tachycardia occurs when the system that controls your heart rhythm is not working properly.
A deer eats a leaf from a tree and gets energy from sugar molecules in the leaf. Which two organelles are required to make this process possible? Pls help thank u so much
Two organelles that are required to make the process of the deer obtaining energy from sugar molecules in the leaf possible are the mitochondria and the chloroplasts.
What is the function of mitochondria and chloroplast?Mitochondria are organelles found in the cytoplasm of eukaryotic cells and are responsible for generating the majority of the cell's energy. They do this through a process called cellular respiration, in which sugar molecules are broken down and the energy released is used to produce molecules of adenosine triphosphate (ATP), which the cell can then use as a source of energy.
Chloroplasts are organelles found in the cells of plants, algae and some other organisms that absorb light energy and convert it into chemical energy. They are only found in the cells that have green pigments called chlorophyll. Chloroplasts are the site of photosynthesis, the process by which plants and other organisms convert light energy into chemical energy by using carbon dioxide and water to produce glucose and oxygen.
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Two organelles that are required to make the process of the deer obtaining energy from sugar molecules in the leaf possible are the mitochondria and the chloroplasts.
What are Organelles?The majority of the energy produced by eukaryotic cells is produced by mitochondria, which are organelles that can be found in the cytoplasm of these cells.
Through a process known as cellular respiration, sugar molecules are broken down and the energy released is used to form molecules of adenosine triphosphate (ATP), which the cell can then use as a source of energy.
In the cells of plants, algae, and certain other species, there are organelles called chloroplasts that collect light energy and transform it into chemical energy.
Therefore, Two organelles that are required to make the process of the deer obtaining energy from sugar molecules in the leaf possible are the mitochondria and the chloroplasts.
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HELP LIMITED TIME!!!!!!!!!!!!!!
Which of the following can be affected by a change in the Earth's
climate?
Select one:
1, Weather
2, Plants and animals
3, All of these can be affected
4, Ecosystems
Answer:
All of these can be affected
Explanation:
A change in the Earth's climate can have a number of impacts on the planet and its inhabitants. Weather is a key aspect of climate, and a change in climate can lead to changes in patterns of weather, such as changes in the frequency or intensity of storms, droughts, or other extreme weather events. These changes can have significant impacts on plants and animals, as they may be adapted to specific types of weather and climate conditions. Ecosystems, which are complex systems of interacting plants, animals, and other organisms, can also be affected by changes in climate, as these changes can alter the relationships between different species and the availability of resources. Overall, climate change can have a range of impacts on the Earth and its inhabitants, and understanding these impacts is an important part of addressing this global challenge.
Many bony fish species have a swim bladder: an air-filled organ that can inflate to help them float up in water or deflate to help them sink down. What can you infer about a species that lacks this organ?
A species that lack a swim bladder, a fish without buoyancy issues will often stay still and erect in the water.
What is a swim bladder?You will notice excessive fin movement if your fish are trying to keep upright or are swimming sideways or upside down as they attempt to float correctly.
Thus, we may draw the conclusion that the swim bladder's air capacity rises as the fish dives deeper.
You might be shocked to learn that the majority of bony fishes have a swim bladder, a particular organ that helps them with that.
Therefore, this is a gas-filled sac with a thin wall that is found inside a fish's body.
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Part B
The minerals that make up rocks give them their unique properties. Based on your results, do you think that any of your three rocks have the exact same mineral make up, or are they three different types of rock? Explain your answer.
Rocks doesn't have the exact same mineral make up as they are made of different composition.
How to illustrate the information?A naturally occurring collection of minerals and/or mineraloids is called rock. There is no known chemical makeup of rocks.
Minerals are naturally occurring substances with unique atomic structures, compositions, and chemical and physical properties. Typically, two or more minerals are mixed together through geological processes to form rocks.
Because of their minerals, formation processes, and processes that have affected the rocks since they were formed, various rocks have different properties.
Rocks are composed of minerals and have a wide range of traits or properties. When a rock is ground into a powder, it takes on the color of streak, and a rock's luster indicates how shiny it is. Other characteristics include size, shape, texture, and hardness.
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1. What other process can you think of that is similar to the journey of a signal through the neuron? For
example, a relay race can be similar to a neuron passing the baton to another neuron. Think of another
example and explain how.
Neurons are similar to other cells in body because: Neurons are surrounded by cell membrane. Neurons have nucleus that contains genes. It contain cytoplasm, mitochondria and other organelles.
what are neural signals?
Information from one neuron flows to another neuron across small gap called a synapse (SIN-aps). At synapse, electrical signals are translated into chemical signals in order to cross the gap. Once on other side, the signal becomes electrical again.
The transfer of information from neuron to neuron takes place through release of chemical substances into the space between axon and the dendrites. These chemicals are called neurotransmitters, and process is called neurotransmission. The space between the axon and dendrites is called the synapse
Neurotransmitter release from presynaptic terminal consists of a series of intricate steps:
1) depolarization of the terminal membrane
2) activation of voltage-gated Ca2+ channels
3) Ca2+ entry
4) a change in conformation of docking proteins
5) fusion of the vesicle to the plasma membrane
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Overhead view of mountains and rivers. Label B is at smaller flows of water that meet to create a larger flow of water at Label A.
Use the drop-down menu to identify what each label shows.
A
✔ river
B
✔ tributary
The diagram Illustrated shows that A is a river and B is a tributary.
What is a river?A river is a body of water that resembles a ribbon and moves downward under the influence of gravity. A river may be both wide and deep or it may be only shallow enough to wade across.
A stream or river that empties into a larger stream, main stem river, or lake is referred to as a tributary or affluent. A tributary does not empty into the sea or the ocean directly. The surrounding drainage basin is drained of its surface water and groundwater by tributaries and the main stem river, which discharges the water into the ocean.
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A hypothesis that is scientific must have a test for proving it
Answer:
True
Explanation:
If it is a scientific hypothesis, then it has to be tested.
What are the advantages of external fertilization? Select all that apply.
higher survival rates
produces many offspring
increased genetic variation
environment dictates success of fertilization
Answer: increased genetic variation
Explanation:
6. Understanding of the cell has changed over
time. Which explains why this has occurred?
A New scientific discoveries lead to new theories.
B Theories are redesigned every ten years as a necessity.
C The constantly evolving universe requires new theories to describe it.
D Larger number of scientists have opinions that must be incorporated.
Answer:
A
Explanation:
Cell theory was first formulated by Schwann and Schleiden, but because of new and advanced technology some statements were replaced and some are added.
Maribel brings her backpack to the lab. She is also given a set of lab materials. What is the safest way for Maribel to organize these items in the lab?
Both the personal items and the lab materials should be arranged neatly along the edge of the table.
Pentane with molecular formula C5H12, exists in three isomeric forms. One shows linear carbon chains, another has one -CH3 groups present on the third carbon atom, and the third has two -CH3 groups present on the second carbon atom. What types of isomers are these?
A.
Geometric isomers
B.
Structural isomers
C.
Halotropic isomers
The types of isomers present in Pentane with molecular formula C5H12 are Structural isomers, option B.
What is Structural Isomerism?Structural isomers are isomers in which the atoms are completely different in order but have the same molecular formulas. Structural isomerism occurs when molecules have the same molecular formula but a different structural formula.
Different types of structural isomerism include chain isomerism, position isomerism, and functional group isomerism. C5H12 exists as three chain isomers, one -CH3 groups and two -CH3 groups. Because more branched isomers have weaker Van der Waals forces and thus lower boiling points, chain isomers have similar chemical properties but different physical properties.
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True or False: Cells grow larger and that is why organisms grow larger.
Answer:
When organisms grow, it isn't because cells are getting larger. Organisms grow because cells are dividing to produce more cells.
Explanation: