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Course: AQA A Level Biology 7402
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AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

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Quiz

3.3.2 Enzymes in Digestion – Exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
Which of these enzymes are responsible for the digestion of protein?
SAT Biology - Question 040
A
B
C
D
E
2.
Protease enzymes break down proteins into:
Amino acids
Glucose
Fatty acids
Starch
3.
Pepsinogen is secreted by the cells lining the stomach. In a low-pH solution, it is converted to an active enzyme, called pepsin. The purpose of producing pepsinogen instead of pepsin is to
SAT Biology - Question 250
A
B
C
D
E
4.
In the statement "The pancreas secretes sodium bicarbonate to increase the acidity of the chyme coming from the stomach," which part makes the statement incorrect?
the chyme coming from the stomach
The pancreas secretes
to increase the acidity
sodium bicarbonate
5.
In celiac disease, the immune system reacts to the protein gluten, damaging the villi and making the lining of the small intestine nearly flat. What is the expected result?
Increased bile secretion by the liver
Increased water absorption in the small intestine
Protein digestion in the stomach stops
Reduced nutrient absorption due to reduced absorptive surface area
6.
Blood capillaries in a villus : monosaccharides and amino acids :: Lacteal : ?
Products of fat digestion
Whole proteins
Water and salts only
Digestive enzymes
7.
Which endocrine gland is correctly matched with its hormone?
Pancreas - insulin
Gallbladder - glucagon
Adrenal gland - thyroxine
Thyroid gland - adrenaline
8.
A person had their gallbladder surgically removed. Which of the following meals would they most likely have difficulty digesting if eaten in large amounts?
A protein-rich meal
A fat-rich meal
A starch-rich meal
A large glass of water
9.
Digestion of egg white by protease at different pH is shown. Which enzyme is this most likely?
Trypsin from the pancreas
Salivary amylase
Pepsin from the stomach
Lipase
10.
Which enzyme digests protein in the stomach?
Amylase
Lipase
Pepsin
Maltase
11.
Which enzyme works best at pH 2?
Salivary amylase
Trypsin
Pepsin
Pancreatic lipase
12.
Physical digestion increases the surface area of food for enzymes.
True
False
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Part of 3. Exchange and Transport — see every lesson and quiz in this unit.
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