CR1 - Glycolysis

Question 1

What is ATP?

Answer 1

ATP is the energy currency of the cell.

Question 2

How does ATP release energy?

Answer 2

By breaking the bond of the third phosphate group.

Question 3

What are electron carriers in cellular respiration?

Answer 3

NADH & FADH₂ (carry high-energy electrons).

Question 4

What is the overall reaction for cellular respiration?

Answer 4

C₆H₁₂O₆ + O₂ → 6 CO₂ + 6 H₂O + Energy (ATP).

Question 5

What is glycolysis?

Answer 5

The breakdown of glucose (6C) into 2 pyruvate (3C).

Question 6

Where does glycolysis occur?

Answer 6

Cytoplasm (cytosol).

Question 7

Is glycolysis anaerobic or aerobic?

Answer 7

Anaerobic (does not require oxygen).

Question 8

What is the net ATP gain from glycolysis?

Answer 8

2 ATP (4 produced, 2 used).

Question 9

What happens to NAD⁺ in glycolysis?

Answer 9

It is reduced to NADH.

Question 10

What happens after glycolysis if oxygen is available?

Answer 10

Aerobic respiration (Krebs Cycle & ETC in mitochondria).

Question 11

What happens after glycolysis if oxygen is NOT available?

Answer 11

Anaerobic respiration (fermentation → lactic acid or alcohol).

Question 12

How much ATP does aerobic respiration produce per glucose molecule?

Answer 12

36 ATP.

Question 13

How much ATP does anaerobic respiration produce per glucose molecule?

Answer 13

2 ATP (from glycolysis).