Biochemistry Quiz 40 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. A substance that is dissolved in a liquid is called the

Correct Answer: C) Solute.

2. You might end up with very weak bones without sufficient quantities of this Vitamin

Correct Answer: C) Vitamin D.

3. Which nutrient is our body's MAIN source of energy?

Correct Answer: A) Carbohydrates.

4. What particles are found in the nucleus of an atom?

Correct Answer: B) Proton and neutron.

5. All of the following biological molecules are important factors in food and nutrition except .....

Correct Answer: D) Nucleic Acids.

6. In the modern Periodic Table, elements are arranged by:

Correct Answer: B) Atomic number.

7. Which type of lipid forms the primary structure of the cell membrane?

Correct Answer: D) Phospholipid.

8. Which biochemistry area that describe the structure and three dimensional arrangements of biomolecules?

Correct Answer: A) Conformational.

9. Which substance is formed as a result of chemical breakdown of glycogen?

Correct Answer: B) Glucose.

10. Changes in pH and temperature can damage an enzymes active site. What is this called?

Correct Answer: D) Denature.

11. Starch is a ..... because it is made of many sugars sub units

Correct Answer: C) Polysaccharides.

12. From what are derived amino acids?

Correct Answer: C) Organic acids in which the hydrogen atom is substitued by the amino group.

13. Organisms whose cells have a nucleus enclosed within membranes

Correct Answer: C) Eukaryotes.

14. Which is true about the structure of starch molecules and proteinmolecules?

Correct Answer: A) Starches and proteins are both polymers.

15. ..... have the lowest (weakest) intermolecular forces of attraction.

Correct Answer: A) Vander Waals forces.

16. What is Biochemistry?

Correct Answer: C) The study of the chemicals of life.

17. What are the three components of a nucleotide?

Correct Answer: C) Sugar, phosphate, nitrogen base.

18. What bond occurs between and within molecules which stabilize structures such as proteins and nucleic acids?

Correct Answer: A) Hydrogen bond.

19. Apples are considered as

Correct Answer: A) Acidic.

20. When atoms share electrons unequally .....

Correct Answer: C) A polar covalent bond is formed.