KW HHB Unit 1 Cellular Respiration

Glycolysis is the breakdown of glucose to

• acetyl

• pyruvate

• oxaloacetate

• carbon dioxide

Where does glycolysis take place?

• Mitochondria

• Cytoplasm

• Nucleus

• Ribosome

ATP is required for the .......................................... of glucose and intermediates during the energy investment phase of glycolysis

• phosphorylation

• addition

• breakdown

• synthesis

The energy investment phase of glycolysis leads to the generation of more .......................... during the energy pay-off stage and results in a net gain of ..........................

• hydrogen

• ATP

• oxygen

• electrons

How many ATP are used up and then produced during the energy investment and energy pay off phases of glycolysis?

• 2 ATP used up and 4 ATP produced (net gain of 4 ATP)

• 2 ATP used up and 2 ATP produced (net gain of 2 ATP)

• 2 ATP used up and 4 ATP produced (net gain of 2 ATP)

• 4 ATP used up and 2 ATP produced (net gain of 2 ATP)

In aerobic conditions, what is pyruvate broken down into?

• carbon dioxide

• citrate

• oxaloacetate

• an acetyl group

In aerobic conditions pyruvate is broken down to an acetyl group that combines with ........................

• coenzyme A forming coenzyme acetyl A

• coenzyme B forming acetyl coenzyme B

• coenzyme A forming acetyl coenzyme A

• coenzyme Q forming acetyl coenzyme Q

In the citric acid cycle the acetyl group from acetyl coenzyme A combines with ........................................

• carbon dioxide

• oxaloacetate

• ATP

• hydrogen ions and electrons

In the citric acid cycle the acetyl group from acetyl coenzyme A combines with oxaloacetate to form ...................

• citrate

• nitrate

• pyruvate

• carbon dioxide

In the citric acid cycle, during a series of enzyme-controlled steps, citrate is gradually converted back into .....................................

• oxaloacetate

• pyruvate

• carbon dioxide

• acetyl