Biochemistry Quiz 13 (20 MCQs)

Quiz Instructions

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1. Enzymes are ..... that speed up or carry out chemical reactions.

Correct Answer: D) Proteins.

2. Which type of lipid is liquid at room temperature

Correct Answer: B) Unsaturated fatty acids.

3. What makes up the cell membrane?

Correct Answer: B) Lipid Bilayer.

4. Which is the strongest acid?

Correct Answer: A) Ph of 1.

5. What is the role played by sodium- bicarbonate in Benedict's solution?

Correct Answer: B) Maintain pH.

6. Which of the following describes an isotope?

Correct Answer: D) Same number of protons, different number of neutrons.

7. What does protein do for your body?

Correct Answer: D) All of the above.

8. Substances that have a pH less than 7 are considered:

Correct Answer: A) Acidic.

9. Amino acids are the monomers of

Correct Answer: C) Proteins.

10. When an enzyme is denatured it loses its ..... and cannot function any longer.

Correct Answer: A) Shape.

11. What is the product of transcription?

Correct Answer: B) MRNA.

12. What type of reaction builds macromolecules? What is the byproduct?

Correct Answer: A) Dehydration ; water.

13. A major type of lipids found in cell membranes is:

Correct Answer: A) Phospholipids.

14. Amylase breaks down alpha-glycosidic linkages. Which of the following could amylase break down?

Correct Answer: A) Glycogen and starch.

15. Which of the following processes requires energy?

Correct Answer: C) Active transport.

16. Phospholipids are .....

Correct Answer: C) Both Philic & Phobic.

17. What happens when there is a mutation in the Cytochrome C gene.

Correct Answer: B) The organism dies.

18. Nucleotides are monomers of

Correct Answer: D) Nucleic Acids.

19. What type of bond gives a water molecule its unique properties?

Correct Answer: D) Hydrogen.

20. Why is Carbon so important to living things?

Correct Answer: D) All of these.