Section A: Mulitple Choice Questions

1. Which of the following statements about phospholipid is incorrect?

A. It contains 3 fatty acid molecules.
B. It has both polar and non-polar parts.
C. It forms structure of cell membranes.
D. It has a phosphate group.

2. Which of the following statements about a prokaryotic cell is incorrect?

A. It has no discrete nucleus.
B. Its ribosomes is smaller than that in eukaryotic cells.
C. There is no mitosis in prokaryotic cell.
D. There are no membraneous structures in prokaryotic cells.

3. Cyanide ion is an example of inhibitor. What is the type of this inhibitor?

A. reversible non-competitive inhibitor
B. reversible competitive inhibitor
C. irreversible inhibitor
D. allosteric inhibitor

4. Which of the following statements is incorrect?

A. ATP contains adenine, deoxyribose and three phosphate groups.
B. NAD is an coenzyme.
C. Both ATP and NAD contain adenine.
D. NAD is a kind of dinucleotide.

5. Which of the following statements is incorrect?

A. Lysosomes can be produced by Golgi apparatus.
B. The connections between plant cells are called plasmodesmata.
C. Primary cell wall is deposited in a particular direction.
D. Ribosomes are non-membrane-bounded structures.

Section B: Questions

6. Explain how protein can act as buffer.

7. Distinguish RNA and DNA.

8. What are the functions of Golgi body.

9. Explain the specific action of enzyme.

10. Distinguish coenzyme and prosthetic group.