Question

1. what is the function of ribosomes in a cell?

a) to store genetic material
b) to provide energy
c) to synthesize proteins
d) to break down waste

1. which of the following structures is responsible for regulating what enters and leaves the cell?

a) cell membrane
b) nucleus
c) mitochondrion
d) golgi apparatus

1. which of the following molecules is hydrophobic?

a) oils and fats
b) water
c) salt
d) sugar

Explanation:

• For question 29, ribosomes are the sites of protein synthesis in the cell.
• For question 30, the cell - membrane is a selectively permeable structure that regulates the movement of substances in and out of the cell.
• For question 31, hydrophobic molecules repel water. Oils and fats are non - polar and thus hydrophobic.

Answer:

1. c) To synthesize proteins
2. a) Cell membrane
3. a) Oils and fats