Ch. 9 - Cellular Respiration

Question 0

What are the three stages of cellular respiration?

Answer 0

1. Glycolysis
2. The citric acid cycle
3. Oxidative phosphorylation

Question 1

What is substrate-level phosphorylation?

Answer 1

The transfer of a phosphate group directly from a substrate molecule to ADP.

Question 2

The process in which a hydrogen ion gradient across a membrane is harnessed to drive cellular work.

Answer 2

chemiosmosis

Question 3

What are the net products of the glycolysis of one glucose molecule?

Answer 3

• 2 Pyruvate
• 2 H2O
• 2 ATP (-2 + 4)
• 2 NADH & 2 H+

Question 4

What is the summary equation of cellular respiration?

Answer 4

C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O + Energy

(glucose) (ATP + heat)

Question 5

What are the net products of the citric acid cycle for 1 molecule of glucose?

Answer 5

• 6 NADH & 6 H+
• 2 ATP
• 2 FADH2
• 4 CO2 (the remaining 2 were given off during the conversion of pyruvate to acetyl CoA)

Question 6

Where do the 3 stages of cellular respiration take place?

Answer 6

Glycolysis - the cytosol
The citric acid cycle - the mitochondrial matrix
Oxidative phosphorylation - the inner mitochondrial membrane

Question 7

Which direction do H+ ions flow through ATP synthase?

Answer 7

From the intermembrane space to the matrix.