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WTA #3 - SHORT QUIZ 3

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

  1. A student accidentally eats spoiled meat. The digestive enzymes in the stomach are still breaking down the proteins. Which enzyme is mainly responsible for this reaction?​

a)

  1. Amylase

b)

  1. Lipase

c)

  1. Protease

d)

  1. Catalase

2.

A teenager drinks lactose-rich milk but later experiences bloating and cramps. Which enzyme is most likely lacking in their digestive system?​

a)

Amylase

b)

Lactase

c)

Lipase

d)

Protease

3.

A scientist changes just one amino acid in the hemoglobin protein. As a result, the protein does not function properly, leading to sickle cell anemia. This illustrates the importance of which protein structure?​

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

4.

A diabetic patient injects insulin daily. Insulin is an example of which protein type?​

a)

Hormonal protein​

b)

Transport protein​

c)

Defensive protein​

d)

Structural protein​

5.

A group of students test how pH affects enzyme activity. They observe that amylase works best at pH 7, while pepsin works best at pH 2. What conclusion can they make?​

a)

All enzymes work best in acidic conditions​

b)

Enzyme activity depends on the specific optimal pH​

c)

pH does not affect enzyme activity​

d)

Enzymes denature only at high pH​

6.

During an experiment, a student adds a chemical that blocks the enzyme’s active site. Which type of inhibition is this?​

a)

Irreversible

b)

Non-competitive​

c)

Uncompetitive​

d)

Competitive

7.

A long-distance runner consumes eggs and meat for recovery. Which function of protein is most related to this dietary choice?​

a)

Energy storage​

b)

Repair of tissues​

c)

DNA replication​

d)

Signal transmission​

8.

A student argues that all proteins act as enzymes. Which statement best corrects this?​

a)

True, because proteins always speed up reactions.​

b)

True, because all proteins are catalysts.​

c)

False, because proteins have different functions beyond catalysis.​

d)

False, because enzymes are carbohydrates.​

9.

TRUE or FALSE

Enzymes can be reused after catalyzing a reaction.​

(a)  

10.

TRUE or FALSE

All amino acids can be synthesized by the human body, so we don’t need them from food.​

(a)  

11.

TRUE or FALSE

Enzyme activity always increases as temperature rises.​

(a)  

12.

TRUE or FALSE

Without enzymes, digestion of food would still happen at the same speed.​

(a)  

13.

  • Identify the correct role of each enzyme/molecule given below.

Actin & Myosin

a)

Structural protein in skin and connective tissue

b)

Contractile proteins for movement​

c)

Protein in red blood cells carrying oxygen​

d)

Defensive proteins against pathogens​

e)

Enzyme that digests fats​

14.

  • Identify the correct role of each enzyme/molecule given below.

Hemoglobin

a)

Structural protein in skin and connective tissue

b)

Contractile proteins for movement​

c)

Protein in red blood cells carrying oxygen​

d)

Defensive proteins against pathogens​

e)

Enzyme that digests fats​

15.

  • Identify the correct role of each enzyme/molecule given below.

Collagen

a)

Structural protein in skin and connective tissue

b)

Contractile proteins for movement​

c)

Protein in red blood cells carrying oxygen​

d)

Defensive proteins against pathogens​

e)

Enzyme that digests fats​

16.

  • Identify the correct role of each enzyme/molecule given below.

Antibodies

a)

Structural protein in skin and connective tissue

b)

Contractile proteins for movement​

c)

Protein in red blood cells carrying oxygen​

d)

Defensive proteins against pathogens​

e)

Enzyme that digests fats​

17.

  • Identify the correct role of each enzyme/molecule given below.

Lipase

a)

Structural protein in skin and connective tissue

b)

Contractile proteins for movement​

c)

Protein in red blood cells carrying oxygen​

d)

Defensive proteins against pathogens​

e)

Enzyme that digests fats​

18.

  • Identify the correct role of each enzyme/molecule given below.

DNA Polymerase​

a)

Specific molecule enzyme acts on​

b)

Site where chemical reaction occurs in enzyme​

c)

Builds new DNA strands​

d)

Defensive proteins against pathogens​

e)

Enzyme that digests fats​

19.

  • Identify the correct role of each enzyme/molecule given below.

Active Site​

a)

Specific molecule enzyme acts on​

b)

Site where chemical reaction occurs in enzyme​

c)

Builds new DNA strands​

d)

Defensive proteins against pathogens​

e)

Enzyme that digests fats​

20.

  • Identify the correct role of each enzyme/molecule given below.

Substrate

a)

Specific molecule enzyme acts on​

b)

Site where chemical reaction occurs in enzyme​

c)

Builds new DNA strands​

d)

Defensive proteins against pathogens​

e)

Enzyme that digests fats​

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