Photosynthesis is a chemical reaction that takes place in the chloroplasts of green plant cells, where light energy is used to convert carbon dioxide and water into glucose and oxygen. Option A is the right answer.
What is photosynthesis?Photosynthesis is the process by which green plants prepare their own nutrients with the help of sunlight, water, and carbon dioxide.
Photosynthesis helps plants to prepare their own food, these plans are called autographs.Photosynthesis takes place inside the protoplast.This process takes place in some other organisms other than green plants.Chlorophyll is the green pigment that is required for this process to take place.The end products that are formed in the process of photosynthesis are glucose and water.Hence Option A is the right answer.
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One moth population carries three alleles at a genetic locus: X1, X2and X3. X1is dominant to X2and X3; X1produces red antennae. X2is co-dominant to X3; X2X2produces yellow antennae, X3X3produces white antennae, and X2X3produces light yellow antennae. The phenotypes in a population are as follows: 0.04 white; 0.16 light yellow; 0.16 yellow; 0.64 red.Assuming that this population is in Hardy-Weinberg equilibrium, what is the frequency of the X3allele in this population
Answer:
The correct answer is - 0.20
Explanation:
According to Hardy Weinberg equation under specific conditions the frequencies of the allele in the gene in a given population remain constant. Thus according to this frequencies of allele and genotype will remain the same through the generation unless there will be no evolutionary influence.
It helps us to predict the genotype frequencies in a large population. If there are two alleles having allelic frequencies p and q and we know equation of probability and frequencies add to 1
p2+2pq+q2=1
The X3X3 genome produces white antennae. Now Phenotypic frequency of the white antennae is 0.16 or 0.04 in the whole population. Hence the frequency of X3 should be a square root of 0.04 i.e, 0.20.
What are threatened species?Question 1 options: species we do not have enough data for to determine their population numbers only large mammals like elephants, pandas, and whales only species poached for their organs or other parts species at risk for extinction species that have already gone extinct
Answer:
The correct answer is - species at risk for extinction.
Explanation:
Extinction is a threat to species of any living organism. The death or removal of last individual of a species is the condition of extinction.
It is commonly referred to the species as mostly species extinct from earth. Any size or type of species of living organism can be extinct.
Match the following: 1. the continuous movement of water between the Earth's surface and the atmosphere lead 2. pollutes water sources by dumping wastes in rivers, streams, and oceans putrefaction 3. the leading cause of water contamination in countries without water treatment plants stimulants 4. a source of water pollution caused by the overuse of pesticides and fertilizers humoral immunity 5. caused by an overabundance of organic matter in water supplies agriculture 6. the decomposition of organic matter by microorganisms hydrological cycle 7. a chemical pollutant that can enter the water cycle through agricultural or domestic use bacterial infection 8. can cause the contamination of underground water supplies if poured on the ground industry 9. a metal that leaks into water supplies via the soil or aging water systems eutrophication 10. depends upon the production of disease-specific antibodies to destroy harmful bacteria sewage 11. increases the activity of the central nervous system petroleum 12. reduces the activity of the central nervous system pesticides 13. caused by the reproduction of a small infectious agent, which produces poisons that destroy cells depressants
Answer:
Explanation:
1. Hydrological cycle: the continuous movement of water between the Earth's surface and the atmosphere.
2. Industry: pollutes water sources by dumping wastes in rivers, streams, and oceans.
3. Sewage: the leading cause of water contamination in countries without water treatment plants.
4. Agriculture: a source of water pollution caused by the overuse of pesticides and fertilizers.
5. Eutrophication: caused by an overabundance of organic matter in water supplies.
6. Putrefaction: the decomposition of organic matter by microorganisms
7. Pesticides: a chemical pollutant that can enter the water cycle through agricultural or domestic use.
8. Petroleum: can cause the contamination of underground water supplies if poured on the ground
9. Lead: a metal that leaks into water supplies via the soil or aging water systems.
10. Humoral immunity: depends upon the production of disease-specific antibodies to destroy harmful bacteria.
11. Stimulants: increases the activity of the central nervous system.
12. Depressants: reduces the activity of the central nervous system.
13. Bacterial infection: caused by the reproduction of a small infectious agent, which produces poisons that destroy cells
During Meselson and Stahl’s experiment, E. coli was grown on heavy nitrogen for what purpose?
A. So each generation of DNA would have a different weight to distinguish them by.
B. To determine how the bacteria functioned with a heavier element.
C. To see how the heavy nitrogen affected their DNA.
D. So each generation of protein would have a different weight to distinguish them by.
Answer:
D. So each generation of DNA would have a different weight to distinguish them by.
I took the test
Meselson and Stahl performed an experiment to find out the semiconservative property of DNA and to differentiate the DNA weight of alternative generation both scientists used heavy nitrogen. Thus option A is correct.
What is the semiconservative property of DNA?When a double-stranded DNA undergoes replication, it results in the formation of 2 double-stranded DNAs and each newly formed DNA has one parental DNA strand and one new DNA strand and this is the semiconservative property of DNA.
Heavy nitrogen of media will appear in the newly synthesized DNA strand so each generation of DNA would have a different weight . So option A is correct.
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what is the relationship between an enzyme and the substrates it can bind
Answer:
Enzymes and substrates bind to each other associating through various interactions, including hydrogen bonds, hydrophobic interactions, and covalent bonds.
Skeletal muscle is controlled by the organism.
Which best describes what this means in terms of movement?
Answer:
Voluntary
Explanation:
Because some of the muscle attached to the skeleton is voluntary
Which of the following structures contain the highest conc of RNA..
A) Centriole B) Lysosome
C) Chromosome D) Nucleolus
Answer:
D.) Nucleus
Explanation:
The Nucleus structure contains the highest conc of RNA..
Hope it is helpful to you ☆
Anjuli performed an experiment to determine the respiration rate of yeast. She determined this by measuring the
amount of carbon dioxide (CO2) that was produced. Then, she created the following graph.
Her teacher suggested that she redraw her graph as a line graph. Why should she redraw the graph?
• A line graph looks better in a scientific report.
• She was measuring a rate of change.
• She had graphed the wrong relationship.
• Her experiment had many different variables.
The correct answer is B. She was measuring a rate of change.
Explanation
A linear graph is a type of graph that contains a series of data represented by points joined by linear segments, which allow you to quickly check the change in the trend of the data. Therefore, inline graphs quantitative variables are usually used to see their behavior over time. According to the above, Anjuli had to use a linear graph to express the information in the graph more clearly, because the data that he was using in his graph were quantitative variables. Also, she wanted to express the respiration rate of the yeast per minute. According to the above, the correct answer is B. Ella She was measuring a rate of change.
Individuals with a mutation in the gene for apolipoprotein B-100 produce very low levels of this protein, which is a component of LDL. How would accumulation of fat in the liver be affected and would this result in hypercholesterolemia or hypercholesterolemia
Answer:
Fats would accumulate in the liver and the individual would show hypocholesterolemia
Explanation:
Familial hypercholesterolemia is a genetic disorder caused by a reduction and/or defect in the low-density lipoprotein (LDL) receptor. Moreover, apolipoprotein B is the unique protein component of LDL, which plays a critical role in lipid metabolism by binding the LDL receptor. Familial defective apolipoprotein B-100 refers to an inherited disorder associated with mutations of the apolipoprotein B-100 that leads to moderate or severe cases of hypercholesterolemia. Mutations in apolipoprotein B-100 are associated with a reduction in the binding capacity of LDL to the LDL receptor, thereby leading to hypercholesterolemia.
the personality of an individual involves his or her
Answer:
both
Explanation:
depends on the person's personality I guess or how they act n all
A scientist makes a discovery that suggests a hominid species created and used relatively sophisticated tools. The scientist decided to publish his findings. Which of the following sources would be regarded as the most reliable?
Answer: The answer is A Journal Reviewed By Peers
Explanation:
PLS HELP ASAP 4 EXAM Which field of biology has caused
some ethical concerns?
A. biotechnology
B. ecology
C. molecular biology
D. evolution of disease
Answer:
D. evolution of disease
Explanation:
Biotechnology's growth and regulation has sparked debate in a variety of academic disciplines, including economics, law, politics, and even history. The genetic engineering of living cells, plants, animals, and humans, in particular, has raised ethical concerns.
OAmalOHopeO
When calcium carbonate is heated, it
decomposes into calcium oxide and carbon
dioxide. If 100 g of calcium carbonate are
decomposed, 56 g of calcium oxide is produced.
What would be the mass of the carbon dioxide
given off by the decomposition?
A. 448
B. 110 g
C. 156 g
Answer:
A. 44 g
Explanation:
First, you need to write a balanced equation:
CaCO₃ -> CaO + CO₂
Then, you need to find the molar mass of CaCO₃:
Ca = 40.078 amu
C = 12.0107 amu
3O = 47.9982 amu
_________________
100.0869 amu
Then, you calculate the moles of CaCO₃:
100 g ÷ 100.0869 amu = 0.9991 moles
In the balanced equation, we can see that the molar ratio of CaCO₃ and CO₂ is 1 : 1, so moles of CaCO₃ = moles of CO₂.
Now you need to find the molar mass of CO₂:
C = 12.0107 amu
2O = 31.9988 amu
________________
44.0095 amu
Finally, you can calculate the mass of CO₂ produced:
0.9991 moles * 44.0095 amu = 43.9698 g = 44 g
what is the average lifespan of a sperm cell
[tex]Hello[/tex] [tex]There![/tex]
The answer is...
5 days at least.
Good luck!
[tex]AnimeVines[/tex]
Explanation:
the answer is up to 5 days
The cell membrane regulates what enters and leaves the cell, only allowing
certain things to enter or exit. This is called:
A:Selective Permability
B:Homeostasis
C:Osmosis
D:Transport
Answer:
A)selective permeability
Explanation:
it allows for it to choose ,small particles easily enter and leave the cell unlike large particles
What is the study of tissue?
When glucose is unavailable, the liver begins to break down fatty acids to supply the rest of the body with metabolic fuel. Explain why fatty acid-derived acetyl-CoA is not catabolized by the citric acid cycle but is instead diverted to ketogenesis when no glucose is available.
Answer:
Fatty acid degradation produces acetyl-CoA
When carbohydrate concentrations drop, any available oxaloacetate is diverted to gluconeogenesis to produce the glucose necessary for red blood cell and brain function. If acetyl-CoA cannot enter the citric acid cycle (and acetyl-CoA cannot be converted to pyruvate in mammals), it is converted to ketone bodies.
What is the main cellular structure involved in respiration?
Answer:
The mitochondria is the main cellular structure involved in respiration
When the flow of water cuts very deep channels through the earth *
2 points
Answer:
It carves deep into the rock and soil it flows over. Mountains streams cut narrow V-shaped channels
Explanation:
Explain two ways in which mitosis is biological significant
Mitosis is a way of making more cells that are genetically the same as the parent cell. It plays an important part in the development of embryos, and it is important for the growth and development of our bodies as well. Mitosis produces new cells, and replaces cells that are old, lost or damaged.
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Identify the four key concepts of Darwin's theory of natural selection. (2 marks)
Explain how Lamarck's theory was different and why it got rejected over time. (2 marks)
Each chromosome is like a package that contains numerous _____. Dna molecules. Traits. Genes. Cells. Help needed ASAP
Answer:
Each chromosome is like a package that contains numerous genes.
I hope this helps
Which Statement isna conclusion?
A. It's better to give people balloons than cut flowers that will die.?
B. Florist Put cut flowers in sugar water, so flowers in sugar water stay fresh longer?
C. How can cut flowers stay fresh for a longer period of time?
D. cut flowers placed in sugar water fresh longer than flowers placed in regular water.
Answer: C
Explanation:
Which biome does this photograph represent?
Answer:
There is no photograph .
Define the word ⇒ Biosphere
THANK YOU!! :)
The biosphere is a narrow zone of the earth where land, water, air interact with each other to support life.
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8. How is penicillin used?
O to make cheese
O to kill protists that cause disease
O to kill bacteria that cause disease
O to make bread rise
Answer:
O to kill bacteria that cause disease
Explanation:
penicillins are a group of antibiotics used to treat a number of bacterial infections.
hope this helps!
What are some reasons why the control of insect pests is difficult?
Explanation:
some pesticides make them reproduce faster
how many types does the larva of silkworm moult?
Answer:
there are 6 lava of silkworm moult.
Answer:
Silkworms will undergo molting up to four times since they grow so much before becoming an adult.
Explanation:
During starch test why is leaf boiled in ethanol?
A) to kill its Protoplasm
B) to soften it
C) to extract its chlorophyll
D) to retain its starch
Answer:
think its C cause when you boil it almost loses all its colour
Which radioactive isotope would you use to date a 4-billion-year-old piece of granite?
A . Carbon - 14 dating
B . Uranium- 238 - lead 206 dating
C .potassium - argon dating
Explanation:
Uranium- 238 - lead 206 dating
