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Salsk061 [2.6K]
3 years ago
7

During light reactions, ATP is produced when hydrogen ions move:

Biology
1 answer:
Natalija [7]3 years ago
5 0

Answer:

The correct answer will be option-C.

Explanation:

Light-dependent reactions are the reaction of photosynthesis which takes place in the presence of light.

During light reaction, ATP and NADPH intermediates are produced which are utilized during the light-independent reaction. The main reactions that take place during light reactions are photolysis of water and ATP synthesis due to the electron transport chain.

Electron transport chain generates electrochemical gradient across the thylakoid membrane sue to the accumulation of protons in the thylakoid lumen and fewer protons in the stroma of the chloroplast.

This causes the osmotic movement of protons down their concentration gradient through ATP synthase. The movement if hydrogen ions take place from thylakoid lumen to stroma forming ATP molecules.

Thus, Option-C is the correct answer.

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Explain how digestion and absorption occurs in the small intestine.
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The small intestine is the site where almost all of the digestion and absorption of nutrients and minerals from food takes place. ... The inner surface of the jejunum, its mucous membrane, is covered in projections called villi, which increase the surface area of tissue available to absorb nutrients from the gut contents.

The digestive process

The digestive tract -- also called the gastrointestinal tract or alimentary canal -- provides the pathway through which foods move through the body. During this process, foods are broken down into their component nutrients to be available for absorption.

Extra information

Digestion actually begins in the mouth, as the enzymes in saliva begin to break down carbohydrate (starch). As food is chewed, it becomes lubricated, warmer, and easier to swallow and digest. The teeth and mouth work together to convert each bite of food into a bolus that can readily move into the esophagus ("the food pipe"). In the meantime, taste buds located in the mouth help you to enjoy each mouthful -- or to find the food distasteful, as is sometimes the case. After the bolus is swallowed, it enters the esophagus where it continues to be warmed and lubricated as it moves toward the stomach.

The acidic environment of the stomach and the action of gastric enzymes convert the bolus into chyme, a liquefied mass that is squirted from the stomach into the small intestine. Carbohydrates tend to leave the stomach rapidly and enter the small intestine; proteins leave the stomach less rapidly; and fats linger there the longest.

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Undigested chyme proceeds from the small intestine into the large intestine (colon), where it becomes concentrated, as liquid is absorbed in preparation for excretion. Bacteria cause fermentation, which facilitates further breakdown, but absorption of nutrients from the large intestine is minimal.
6 0
3 years ago
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Answer:

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Which parts of the cell membrane would help a large carbohydrate molecule enter the cell
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Globular proteins im pretty sure

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Read 2 more answers
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