3.3.3 - Digestion and Absorption Exam Questions Mistakes

Question 1

Describe the structure of protein

Answer 1

1. Protein are polymers of amino acids.
2. They are joined by peptide bonds
3. They are formed by condensation reactions.
4. Then go onto talking about the four different structures - primary, secondary, tertiary and quaternary

Question 2

Describe how proteins are digested in human gut

Answer 2

Talk about endopeptidase, exopeptidase and dipeptidase

Question 3

Name one other digestive enzyme that is located in the plasma membrane of cells that line the small intestine

Answer 3

Dipeptidase

Question 4

At the small intestine what effect would a respiratory inhibitor have on absorbing cells

Answer 4

• a respiratory inhibitor will stop aerobic respiration from happening, so NO atp is produced, so no atp is hydrolysed, no energy is released for active transport

Question 5

Purpose of villi

Answer 5

Increase the surface area for more effective absorption

Question 6

Where do chylomicrons go after they are packaged by Golgi apparatus and why do they leave by exocytosis

Answer 6

• they go through intercellular space into lymphatic capillaries.
• they leave in vesicles because they are too large to leave by any other method