Question

Six tubes containing preparations from animal tissue were set up as shown in the table. Tube contents

1. Glucose + homogenized cells

2. Glucose + mitochondria

3. Glucose + cytoplasm lacking organelles

4. Pyruvic acid + homogenized cells

5. Pyruvic acid + mitochondria

6. Pyruvic acid + cytoplasm lacking organelles

After incubation, in which three tubes would carbon dioxide be produced?

• A. 1, 2 and 3
• B. 1, 4 and 5
• C. 3, 4 and 6
• D. 3, 5 and 6

Answer 1

Answer: (B)

1, 4 and 5