English quiz in unit 3

1. What is the function of the mitochondria in a cell?

• A) Producing proteins.

• B) Generating energy (ATP).

• C) Storing genetic material.

• D) Controlling cell division.

2. Which of the following is a characteristic of mammals?

• A) They lay eggs.

• B) They have hair or fur.

• C) They breathe through gills.

• D) They undergo metamorphosis.

4. Which planet is known as the Red Planet?

• Earth

• B) Mars.

• C) Jupite

• D) Venus.

3. What is the main purpose of the digestive system?

• A) To pump blood throughout the body.

• B) To break down food and absorb nutrients.

• C) To send signals between different body parts.

• D) To remove waste through the skin.

5. What is the main gas used by plants during photosynthesis?

• A) Oxygen.

• B) Carbon dioxide.

• C) Nitrogen.

• D) Hydrogen.

7. What is the largest organ in the human body?

• A) Heart.

• B) Liver.

• C) Skin.

• D) Lungs.