1. A physical change occurs when the chemical composition of a substance does not change, but only its physical properties. An example of this would be melting ice. A chemical change occurs when the chemical composition of a substance is altered. An example of this would be the formation of rust from iron.
2. In order to answer this I would need to see what tests the question is referring to.
But you could find one physical change and one chemical and use something like this:
Test 1:
A physical change occurred in Test 1. This is supported by the fact that the substance retained its original chemical composition but changed its form.
Test 2:
A chemical change occurred in Test 2. This is supported by the fact that a new substance was created which had a different chemical composition than the original substance.
• Analysis of hemoglobin proteins obtained from an individual with Sickle Cell Anemia (SCA) has been shown to contain the following amino acid sequence. Using the information from part (A), identify which of the DNA sequences is normal and which is mutated, justifying your choice.
• Sickle Cell Hemoglobin Analysis: Met – Val – His – Leu – Thr – Pro – Val
Answer-
Sickle Cell Anemia (SCA) is caused by a single point mutation in the beta-globin gene, which results in the substitution of a single amino acid in the hemoglobin protein.
Based on the amino acid sequence provided, we can conclude that the DNA sequence in the beta-globin gene is mutated, as it codes for Val at the 6th position, rather than the normal GAG.
What is the Sickle Cell Anemia about?The normal beta-globin gene codes for the amino acid glutamic acid at the 6th position (coded for by the GAG codon), while in SCA the mutated beta-globin gene codes for valine at the same position (coded for by the GTG codon).
In the hemoglobin protein sequence provided, the 7th amino acid is listed as Val, which suggests that the corresponding codon in the beta-globin gene is GTG. This is the mutated version of the beta-globin gene that is responsible for SCA, while the normal version of the beta-globin gene would code for GAG at this position.
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An enzyme called tyrosinase produced the dark compound in skin (melanin). I’m albinism, this enzyme does not work or is not present. Explain how each mutation could be responsible for Albinism.
The enzyme called tyrosinase produced the dark compound in the skin (melanin) but in albinism, this enzyme does not work or is not present, thereby this mutation could be responsible for Albinism because this phenomenon alters the molecular signaling pathway involved in the synthesis of skin pigments.
What is the relationship between genetic mutations and the alteration of signaling molecular pathways?The relationship between genetic mutations and the alteration of signaling molecular pathways is based on the fact that alteration in the genetic material can lead to defective proteins involved in a signaling network, thereby altering the final outcome of the pathway.
Therefore, with this data, we can see that the relationship between genetic mutations and the alteration of signaling molecular pathways is based on the molecular mechanisms that are altered during the generation of a phenotypic feature such as in this case skin pigmentation.
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Which of the following science related statements are observations rather than opinions? Select all that apply.
The most frequent cause of coronary artery disease is the accumulation of fatty plaques in the arteries (atherosclerosis). Poor eating habits, inactivity, obesity, and smoking are risk factors. Choosing a healthy lifestyle can help reduce the risk of atherosclerosis. Thus option C, D is correct.
What are the most common heart disease?The most prevalent kind of heart disease, coronary heart disease, will claim 382,820 lives in 2020. 20.1 million adults aged 20 and older, or 7.2%, have CAD. Nearly 2 in 10 fatalities from CAD will occur in adults under the age of 65 in 2020.
Therefore, In the US, heart disease is the leading cause of death. Additionally, fewer bees have been visiting my garden lately, indicating that bee populations are declining.
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The given question is incomplete. Complete question is given below:
Which of the following science related statements are observations rather than opinions? Select all that apply.
Whaling should be banned.
Cancer is the worst of all diseases.
Ocean acidity was greater in 2010 than in 2000.
Heart disease is the major cause of death in the United States.
Fewer bees have been in my garden recently, so bee populations must be decreasing.
Osmosis is the passive transport of what substance
Answer:
Osmosis is the passive transport of water molecules across a selectively permeable membrane. In osmosis, water moves from an area of high concentration (high water potential) to an area of low concentration (low water potential) in order to balance out the concentration on both sides of the membrane. This process can be observed in living cells, where the membrane surrounds the cell controls the flow of water and other molecules in and out of the cell.
In simple words, Osmosis is a type of diffusion that specifically refers to the movement of solvent molecules through a selectively permeable membrane. It is a fundamental concept in biology and is crucial for the proper functioning of cells and organisms.
This is an example Dinoflagellates can perform photo and provide
The relationship between Dinoflagellates and coral is an example of a mutualistic relationship.
Mutualistic relationships are interactions between two different species in which both species benefit. In the example you provided, the dinoflagellates perform photosynthesis and provide energy to themselves and the coral, while the coral provides protection for the dinoflagellates. This is a mutualistic relationship as both species benefit from the interaction.
B. dependent relationship, C. parasitic relationship, and D. commensalism relationship are all different types of interactions.
-A dependent relationship is one in which one species is entirely dependent on the other for survival,
-A parasitic relationship is one in which one species (the parasite) benefits at the expense of the other species (the host),
-A commensalism relationship is one in which one species benefits from the interaction while the other species is neither helped nor harmed.
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The complete question is:
Dinoflagellates can perform photosynthesis and provide energy for themselves and for the coral that they live near. The coral provides protection to the dinoflagellates. This is an example of a
A. mutualistic relationship.
B. dependent relationship.
C. parasitic relationship.
D. commensalism relationship.
Dinoflagellates are a diverse group of marine microorganisms that possess the ability to perform photosynthesis and produce oxygen.
What are dinoflagellates?Dinoflagellates are a diverse group of aquatic microorganisms that belong to the kingdom Protista. They are characterized by their distinctive whip-like flagella, which allow them to move through the water. Dinoflagellates are found in both marine and freshwater environments, and they can be found in a wide range of habitats, from the open ocean to estuaries, lagoons, and even in soil. They are a type of phytoplankton and play a critical role in the oceanic food web and global biogeochemical cycles.
Some dinoflagellates are photosynthetic, meaning they can produce their own food through the process of photosynthesis, and can produce oxygen. They are an important primary producer of marine food webs and support the entire marine ecosystem. However, some dinoflagellates produce toxins that can be harmful to marine life, as well as humans and can cause blooms or "red tide" phenomenon.
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Ravi is driving her car, hits a patch of ice, and momentarily loses control of the vehicle. Despite spinning in a full circle, Ravi manages to
avoid hitting any objects and drives away unharmed. Ravi experiences a surge of adrenaline and a racing heartbeat to due to the activation
of which of the following?
O sympathetic nervous system
O parasympathetic nervous system
O thyroid gland
O somatic nervous system
O pancreas
Ravi is driving her car, hits a patch of ice, and momentarily loses control of the vehicle. Ravi experiences a surge of adrenaline and a racing heartbeat to due to the activation due to Symphthetic nervous system.
What is Symphathetic nervous system?Autonomic nervous system includes the sympathetic nervous system. It might be referred to as your "automatic" nervous system because it controls a variety of processes that don't require conscious thought.
The ability of your sympathetic nervous system to react to risky or stressful conditions is its most well-known function.
When this happens, your sympathetic nervous system kicks in to help you escape danger by increasing your heart rate, pumping more blood to areas of your body that need it, and other responses.
Therefore, Ravi is driving her car, hits a patch of ice, and momentarily loses control of the vehicle. Ravi experiences a surge of adrenaline and a racing heartbeat to due to the activation due to Symphathetic nervous system.
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 a model of a change to the double strand of DNA molecule is shown here based on the illustration what describes the type of change and the effects of the change in the model of DNA select all answer choices that apply 
search sailesh xettri on messenger
Explanation:
bike pic guy
In humans, brown eyes are dominant to blue and brown hair is dominant to blonde. Cross a homozygous dominant brown-eyed blonde man, with a blue-eyed and heterozygous brunette woman
Number of matings of roan-coated cows and roan coated bulls resulted in the following
When red cattle breed with red cattle, the resultant offspring show both red and white fur, resulting in a mixed coat pattern called "roan."
What is a roan bull?The roan pattern, normally in Shorthorn cattle, is inherited as a heterozygous genotype. Roaming is usually the intermixing of two dissimilar colored hairs - black and white make a blue roan while red and white make a red roan.
The roan coat color in livestock species is distinguished by a mixture of white and tint hair in cattle, If it is a breed that has the roan color pattern, like a Shorthorn, then yes it can be pure-blooded. Or it can be a cross-breed with the roan color pattern. Roan is a color, not a breed.
So we can conclude that Roan" mentions a horse coat color pattern characterized by a mixture of colors.
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Explain how the structure of a cell allows localization of reactions, protection from reactive molecules, and greater efficiency of cellular processes than a bacterial cell.
The structure of a eukaryotic cell allows localization of reactions because there are subcompartments in the cell where specific enzymes colocalize, protection from reactive molecules refers to structural barriers, while greater efficiency of cellular processes in this cell than a bacterial cell is based on the subdivision of work.
What does subdivision of work mean in terms of a eukaryotic cell?The expression subdivision of work mean in terms of a eukaryotic cell makes reference to the presence of different cell compartments such as those associated with particular organelles which provide a suitable medium to carry out particular reactions such as the presence of hydrolytic enzymes in lysosomes.
Therefore, with this data, we can see that the subdivision of work is fundamental in a eukaryotic cell in order to perform different tasks, which is translated to higher metabolic efficiency when compared to bacteria.
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HELP ASAP!!!!!!! LIMITED TIME!!!!!!! PLEASE
The average temperature of Earth has increased approximately 0.8°C in the last one hundred years. Which of the following do researchers most attribute to this temperature increase?
Select one:
1. the lower amounts of carbon dioxide
2. increased use of fossil fuels
3. increased population in third-world countries
4. the solar flares reaching Earth
Answer:
2
Explanation:
4. If the mass of two objects increases and the
distance between them stays the same, what happens to the gravitational force
between the two objects?
A. It decreases.
B. It remains the same.
C. It fluctuates.
D. It increases.
Answer:
As the mass of either object increases, the force of gravitational attraction between them also increases.
period when cell is not engaged in division
Interphase is the period of cell cycle in which the cell is not engaged in any kind of cell division. This phase is marked as the preparatory phase for the actual cell division.
What is Cell cycle?The cell cycle is a series of steps during which the chromosomes and other cellular material double to make two copies of the genetic material. The cell then undergoes division to form two daughter cells, each of the daughter cell receiving one copy of the doubled chromosomal material. The cell cycle is complete when each of the daughter cell is surrounded by its own outer membrane.
The interphase is the period when the cell is in a non-dividing state of the cell and this phase can be in different stages: the first gap (G1) between the last mitosis (M) and the S-phase (phase of DNA synthesis) and the second gap (G2) phase between the completion of the S-phase and the next mitosis (M).
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Step 1: Drag the boxes to
indicate the phase of the
cell cycle.
ANAPHASE
TELOPHASE
PROPHASE
METAPHASE
INTERPHASE
Step 2: Label individual
parts of the cell by dragging
the letter to the structure.
A
A: Spindle
B B: Chromatid
с
D D: Centrioles
E
C: Chromosome
E: Daughter cells
FF: Nucleus
400000
DI
1
The image shown is of a cell cycle. Cycle phases are prophase, metaphase, anaphase, and telophase.
What is a cell cycle?
A cell cycle is the sequence of events that take place in a cell leading to its division and duplication (replication). It consists of two main parts: interphase and the mitotic phase. During interphase, the cell grows and DNA is replicated in preparation for cell division. During the mitotic phase, the cell divides into two daughter cells.
A cell spends the majority of its time in interphase, which is when it develops, duplicates its chromosomes, and prepares to divide.
The cell then exits interphase, enters mitosis, and divides to completion. Each of the resulting cells, known as daughter cells, enters its own interphase to begin a new cell cycle.
The cell cycle is the process by which cells multiply and divide into two new cells. The cell cycle phases are G1, S, G2, and M. At the G1 stage, cells are getting ready to divide.
Therefore, The given image is of cell cycle. The phases of cycle are prophase, metaphase, anaphase and telophase.
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HELP LIMITED TIME!!!!!!!!!
Solar, wind, wave, and nuclear energy are all ways of producing
energy without producing the negative outcome of:
Select one:
1, Decreased oxygen levels
2, Habitat loss
3, Increased greenhouse gas emissions
4, Non-native species
Answer:
3. Increased greenhouse gas emissions
Explanation:
Solar, wind, wave, and nuclear energy are all ways of producing energy without producing the negative outcome of increased greenhouse gas emissions. Greenhouse gases, such as carbon dioxide and methane, are released into the atmosphere through the burning of fossil fuels, such as coal, oil, and natural gas. These gases trap heat in the atmosphere and contribute to global warming and climate change. Solar, wind, wave, and nuclear energy, on the other hand, are forms of renewable energy that do not produce greenhouse gases when they are generated. They are considered more environmentally friendly alternatives to fossil fuels, and their use can help to reduce greenhouse gas emissions and mitigate the impacts of climate change.
A veterinarian is trying to ascertain why a herd of sheep suddenly all have green lips and muzzles and are coughing and vomiting. He believes that they have ingested a biotoxin and asks the owner if he has noted any rubber bitterweed in his fields. The farmer is incredulous, saying, “It’s right in the name—BITTERweed. Sheep don’t eat that stuff.” Which fact would support the veterinarian’s theory that these sheep have eaten the poisonous scrub?
A.
Bitterweed grows in most parts of America.
B.
The weed is actually very sweet and sheep like the taste.
C.
If they have not been fed properly, sheep will eat bitterweed.
D.
Sheep will eat anything that is not tied down.
Answer:
C. If they have not been fed properly...
Explanation:
If they have not been fed properly, sheep will eat bitterweed. This fact would support the veterinarian's theory that the sheep have eaten the poisonous scrub, as it suggests that the sheep may have turned to eating the bitterweed due to hunger or malnutrition.
Which process usually results in offspring that exhibit new genetic variations
Answer:
A
Explanation:
A shows process of fertilization where sperm and egg meet to form zygote which is genetically different than sperm or the egg.
If there were 1176 seeds collected, predict how many would be axial?
Predict how many seeds would be homozygous dominant?
homozygous recessive:
terminal?
heterozygous?
According to the given that actual flower position is dominant over terminal flower.
What is a homozygous dominant plant?When an organism possesses two copies of the same dominant allele, it is said to be homozygous dominant, and when it possesses two copies of the same recessive gene, it is said to be homozygous recessive.
When an organism is homozygous, it contains two copies of the same allele for a gene. When two copies of the same dominant allele or two copies of the same recessive allele are present in an organism, it is said to be homozygous dominant or homozygous recessive.
When an organism is heterozygous, it has two distinct alleles of the same gene. For instance, pea plants can have either homozygous dominant (red-red) or heterozygous red blooms (red-white). They are homozygous recessive if they have white blooms (white-white). Heterozygous carriers are always present.
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Which of the following is a characteristic of renewable sources of energy
They are exhaustible
They cause air pollution
They will run out soon
They cause less pollution
Pls help ty
They cause less pollution. Renewable sources of energy, such as solar, wind, and hydroelectric, cause significantly less air and water pollution than non-renewable sources, such as coal and oil.
What is pollution?Pollution is the presence of toxic substances in the environment that can have a negative effect on humans, animals, and plants. It can either be the result of natural processes or due to man-made activities. Pollution can occur in the air, water, soil, and even in the food we consume. Common forms of pollution include air pollution, water pollution, plastic pollution, and noise pollution. Air pollution is the release of pollutants into the air which can cause harm to humans and the environment. Water pollution is the contamination of surface or ground water and can be caused by agricultural runoff, industrial pollution, and sewage. Plastic pollution is the accumulation of plastic particles in the environment that can damage ecosystems.
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Bunnies: Black fur is dominant to white fur. Use the letter “B” and “b” to answer the following questions.
6. Complete the punnet square to show the possible offspring of a true-breeding black rabbit and a true-breeding white rabbit. (true breeding parents are homozygous, know this for the test!)
7. What ratio would you see in the F1 genotypes?
8. What ratio would you see in the F1 phenotypes?
9. If you crossed two of these offspring, what would this generation be called?
10. Cross two offspring from the F1 generation. (Complete your Punnett square on scratch paper)
a. genotypes:
b. phenotypes:
Answer:
they are all 100% heterogenous ,,their genotype is Bb,, their prototype is black fur
Explanation:
look at my demonstration
ASAP HELP!!!!! LIMITED TIME!!!!!!!!
What is one way that greenhouse gases are released into the
atmosphere?
Select one:
O Introducing non-native species into an environment
O Oil spills
O Littering
O Burning fossil fuels
Answer:
O Burning fossil fuels
Explanation:
Fossil fuel burning releases tons of CO2 which is a green house gas
Please select the word from the list that best fits the definition Brings drizzly rain
The word that bests fits the definition "Brings drizzly rain" is Brings precipitation.
What is precipitation?Any liquid or frozen water that forms in the atmosphere and falls back to Earth is referred to as precipitation. It takes many forms, including rain, sleet, and snow. Precipitation, along with evaporation and condensation, is one of the three major components of the global water cycle.
Without changing the meaning of the sentence, the best word that replaces drizzly rain is precipitation which is considered to mean light showers. Rain is water droplets that fall to the Earth's surface as precipitation.
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Would u pls help me ?????
Answer:
1.d 2.d 3.a 4.b 5.d 6.d 7.a
5
Select the correct answer.
Which term defines a well-supported, explanation of an occurrence of a natural phenomenon?
A.
hypothesis
B. bias
C. observation
D. theory
Please help me
Answer: the answer is D a theory
Explanation: Because it has strong evidence backing the claims it makes
Explain why Chargaff’s data was an important clue for putting together the structure of DNA.
Answer:
Chargaff's data was an important clue for putting together the structure of DNA because it provided the basis for determining the ratios of the four nitrogenous bases in DNA. Specifically, Chargaff's data showed that the amount of adenine (A) was equal to the amount of thymine (T), and the amount of guanine (G) was equal to the amount of cytosine (C). This helped scientists to understand that the two strands of a DNA molecule pair together in a specific way, with A always pairing with T and G always pairing with C. This information was essential in determining the double-helix structure of DNA.
Explanation:
The sample of DNA below is being analyzed to determine if a patient has
the genetic disorder. DNA sequence:3' CAA-TCG-CGG-TCT-CTT 5'.
Determine the mRNA sequence from the patient's DNA sequence.
If the sample of DNA below is being analyzed to determine if a patient has the genetic disorder and this DNA sequence is 3' CAA TCG CGG TCT CTT 5', then the mRNA sequence from the patient's DNA sequence is GUU AGC GCC AGA GAA.
What is the cell process of genetic transcription?The cell process of genetic transcription refers to the generation of a complementary strand of RNA from a DNA template chain, which may be a fragment of a sequence and the resulting mRNA can then be used to produce a protein by another cell process called translation.
Therefore, with this data, we can see that the cell process of genetic transcription is based on the generation of a complementary RNA strand by using a DNA sequence template such as for example the coding region of a gene.
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What is earth’s approximate rate of movement along its orbit?
Answer:
Earth revolves in orbit around the sun in 365 days, 6 hours, 9 minutes with reference to the stars, at a speed ranging from 29.29 to 30.29 km/s.
Explanation:
the____is the portion of earth that can support living things.
Answer:
The Biosphere
Explanation:
The biosphere is a thin life-supporting portion on Earth's surface, extending a few km into the atmosphere to the deep-sea. It is composed of living organisms and nonliving factors from which the organisms derive energy and nutrients.
definition for necessary components ?
Answer:
Necessary components are elements or ingredients that are essential for something to exist or work properly.
Explanation:
QUESTION 1
Life has gotten much better in the last 100 years, yet people are not any happier. This statement characterizes the...
a. escape from freedom
b. the point/counterpoint phenomenon
c. the paradox of progress
d. modern society
This statement is characterized by the concept of the paradox of progress, as shown in option C..
What is the paradox of progress?It is a psychosocial concept.It's the term that describes bad results coming from good processors.Progress is something good and desired by all communities. This is because all people want to progress in their social and individual lives. After all, the results of progress tend to be good, uplifting, and promote many good things.
However, there is a paradox where progress triggers poor results in elements that worked better in the past. An example of this can be seen in communities that progressed over time but emotionally regressed, keeping more people unhappy than before.
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