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1 year ago

Which of the following best explains how the light reactions of photosynthesis generate ATP?

Biology

1 answer:

frutty [35]1 year ago

6 0

Answer:

B. A proton gradient drives the formation of ATP from ADP and inorganic phosphate via ATP synthase.

Explanation:

Light reaction of photosynthesis includes the splitting of water in the presence of sunlight and electron transfer from PSII to PSI via an electron transport system. During the transfer of electron through cytochrome of the electron transport system, the proton concentration gradient is generated across thylakoids. The proton concentration gradient is harvested to drive ADP phosphorylation by the catalytic site of ATP synthase accompanied by downhill movement protons through its proton channels.

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The answer is C

Since the horned is pp and not horned is PP it is Pp

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1 year ago

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Ram is a farmer who wants to grow tomatoes on his field. Give him four suggestions so that he can grow a healthy crop .You can t

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Answer: start seeds as early as mid-January

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1 year ago

Which type of natural selection occurs when an intermediate phenotype is favored?

klasskru [66]

Answer:

The type of natural selection that occur when intermediate phenotype is favored is called STABILIZING SELECTION.

Explanation:

There are 3 major types of natural selection, these are: stabilizing, directional and diversifying selection.

A stabilizing selection is said to occur when natural selection favors average phenotype by selecting against extreme variations. Stabilizing selection usually leads to decrease in genetic variation of the population concerned.

A good example of stabilizing selection is that of snakes, which have deep green color that blend completely with their environment. This set of snakes will escape from predators more than others in the population, which have color that slightly differ from deep green and which do not blend very well with the environment. Those snakes, whose colour do not blend very well with their environment will get killed more easily by the predators and with time will become extinct while those with colour that blend with the enviroment will survive and produce more offspring.

The extinction of snakes from the population will lead to decrease in genetic variation.

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1 year ago

A pathologist who wants to examine a patient's liver cells to determine if the mitochondria have an internal structural defect w

BlackZzzverrR [31]

The correct answer is "transmission electron microscope".

The transmission electron microscope can magnify the organelles of the cell clearly; as in light microscopes wherein most organelles cannot be visualized. TEM works by using a beam of electrons to pass through a specimen to make a clear image. Because of its superior magnification, mitochondrial defects can be visualized easily.

Attached is a sample picture of a transmission electron microscope image of a mitochondria.

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1 year ago

What percentage, on average, of living plant biomass on land is consumed alive by herbivores?a. More than 75% b. 50% c. 25% d. L

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Answer: D. Less than 10%

Explanation:

Herbivores consume no more than 10% of living plant biomass.

Hope this helps!

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1 year ago