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Cell Biology Functions Quiz

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Questions and Answers

What is the main function of keratin in hair?

To act as an enzyme
To act as a hormone
To provide structural support (correct)
To transport substances across the cell membrane

Which of the following enzymes is responsible for breaking down starches?

Trypsin
Pepsin
Lipase
Amylase (correct)

What is the main function of hemoglobin in the body?

To act as an antibody
To provide structural support
To transport oxygen from the lungs to cells (correct)
To act as an enzyme

What is the maximum recommended percentage of dietary intake that should come from lipids?

30% (D) Signup and view all the answers

Which of the following is a key function of lipids in the body?

To provide energy (C) Signup and view all the answers

What is the name of the lipid that forms the cell membrane?

Phospholipid (D) Signup and view all the answers

What is the main function of carbohydrates in the body?

To provide immediate energy for muscles, brain, and cells (D) Signup and view all the answers

Which of the following is a disaccharide?

Sucrose (C) Signup and view all the answers

Why is glucose considered the most important sugar for the body?

Both A and B (C) Signup and view all the answers

Which of the following is a lipid?

Triglyceride (D) Signup and view all the answers

What is the primary function of proteins in the body?

To build and repair body tissues (C) Signup and view all the answers

Which of the following is a macromolecule?

Carbohydrate (A) Signup and view all the answers

Which of the following statements about proteins is true?

Proteins are composed of carbon, hydrogen, oxygen, and nitrogen. (C) Signup and view all the answers

What is the primary role of fibrous proteins?

Providing structure and support (C) Signup and view all the answers

Which of the following is an example of a globular protein?

Enzyme (B) Signup and view all the answers

What percentage of the diet should proteins ideally make up?

15% (D) Signup and view all the answers

Which of the following is a characteristic of a complete protein source?

It contains all essential amino acids. (C) Signup and view all the answers

How many essential amino acids must be obtained from dietary sources?

9 (B) Signup and view all the answers

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