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2 years ago

Choose all the true statements about protein digestion and hydrolysis.

Biology

1 answer:

klio [65]2 years ago

4 0

Answer: The true statements about protein digestion and hydrolysis are;

1. Hydrochloric acid in gastric juices cause protein denaturation.

2. In small intestine trypsin attacks peptide bonds.

3.free amino acids are absorbed by the intestinal wall.

Explanation:

Protein digestion occurs in the duodenum and stomach and it is the breakdown of proteins to amino acids by action of Enzymes like trypsin, pepsin.

Protein is digested by the hydrolysis of carbon-nitrogen bond. Mechanical digestion of protein begins in the mouth and it continues in the small intestine and stomach.

Chemical digestion starts in the stomach where by hydrochloric acid in the gastric juice denatures the protein and convert pepsinogen to pepsin enzyme which convert the protein in food to peptides. Trypsin attacks the peptide bond that involves the carboxyl group which breaks it to polypeptide. Exopepdisases and dipeptidases breaks it down to amino acids. The amino acids released by protein digestion is then absorbed by the intestinal wall

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Apart from suffering from recurrent and prolonged infections, Marie Curie also experienced the following signs and symptoms: fat

Nataly [62]

Answer:

See below

Explanation:

Marie Curie died of aplastic anemia in 1934. Aplastic anemia is an autoimmune disease in which the body fails to produce blood cells in sufficient numbers. Blood cells are produced in the bone marrow by stem cells that reside there. Aplastic anaemia causes a deficiency of all blood cell types: red blood cells, white blood cells, and platelets.

Fatigue is a symptom of aplastic anemia as the blood doesn't have the necesarry red blood cells to transport the oxygen to the organs.

Rapid heart rate happens because the body senses the decrease of oxygen's concentration and the hearts beats faster to provide the organs of oxygen.

Pale skin happens because the blood vessels are contracted in order to provide oxygen to the important organs of the body as the brain and heart. It means that less blood reaches the face and it shows as pale skin.

Prolonged bleeding from cuts happens because there aren't enough platalets to produce a blood clot to stop the bleeding.

Dizziness happens because there is not enough oxygen arriving to the brain.

If she is A negative, she can only receive blood from others A negative donors, or O- donors. This is because she has antibodies to B, and to groups that have the protein Rh (+). So she can't receive blood either B nor Rh+.

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2 years ago

The following figure shows a plant cell immediately after it has been placed in distilled water (A) and a plant cell that has be

DENIUS [597]

Answer:

Plant cell A has lower water potential than cell B. True

Plant cell B is isotonic to the fluid in the beaker. True

Plant cell B's water potential increased due to an increase in solutes inside the cell. False

Plant cell B is at equilibrium with the fluid in the beaker. True

Plant cell A has higher water potential than cell B. False

Plant cell A is at equilibrium with the fluid in beaker. False

Explanation:

Plant cell A has lower water potential than cell B. True

This statement is true because the water potential of A is -2 bars while that of B is zero bars.

Plant cell B is isotonic to the fluid in the beaker. = True

Isotonic solutions have equal water potential. Since the water potential of distilled water is zero and that of plant cell B is zero as well, plant cell B is isotonic to the fluid in the beaker.

Plant cell B's water potential increased due to an increase in solutes inside the cell = False.

An increase in solute inside the cell doe not increase water potential but rather reduces it.

Plant cell B is at equilibrium with the fluid in the beaker. = True

Plant cell B is at equilibrium with the fluid in the beaker because its water potential is zero since the negative solute potential is counterbalanced by the positive pressure potential.

Plant cell A has higher water potential than cell B = False.

Plant cell A has a lower water potential of -2 bars while plant cell B has a higher water potential of zero.

Plant cell A is at equilibrium with the fluid in beaker. = False.

Plant cell A is not at equilibrium with the fluid in the beaker, rather due to its negative water potential, water will move into the cell.

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2 years ago

What are the two specific concerns of species diversity?

Alenkinab [10]

Answer:

Species diversity is concerned with both commonalities and differences. This is seen in the variety of species from mammals to insects. This shows the classifications of the species in the environment in order for them to survive and adopt to the changes and climate.

Explanation:

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2 years ago

Under the right circumstances, the lysogenic cycle changes to the lytic cycle. Explain whether the lytic cycle can change to the

kap26 [50]

Answer:

The correct answer is - no it cant not change from the lytic cycle to the lysogenic cycle.

Explanation:

In the lysogenic cycle, phage DNA is fused into the host genome, where it is moved to the next generation with the host genome. Natural stressors, for example, exposure to toxic compounds or starvation may cause the prophage to extract and enter the lytic cycle where the virus burst or kill the host genome.

So, in the lytic cycle virus kills the host cell s there is no chance or need to change into the lysogenic cycle as whereas in the lysogenic cycle virus incorporated with the host and becomes a chromosome.

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2 years ago

Which of the following processes and organelles account for the replacement of lipids and proteins lost from the plasma membrane

adelina 88 [10]

Answer:

Vesicles (Exocytosis),RER (Rough ER) and SER(Smooth ER)

Explanation:

Vesicles are a small structure consisting of a lipid bilayer. They are form naturally during the process of secretion (exocytosis) and up take of nutrients (phagocytosis) and transport materials within the cytoplasm. Vesicles binds with the plasma membrane to release its content outside of cell.

Endoplasmic reticulum

It’s a series of interlinked sacs and tubules modifies proteins and synthesizes lipids.However, the synthesis of proteins and lipids carried out in two different regions of endoplasmic reticulum that is rough ER and Smooth ER. Ribosomes transfer their synthesize proteins into the lumen of the RER where they modify proteins. It also makes phospholipids for cellular membranes

The SER is continuous with the RER and its role is to synthesize lipids, carbohydrates, and steroid hormones. Detoxifies poisons and store calcium ions...

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2 years ago