Cell respiration

Question 1

Link reaction

Answer 1

Pyruvate enter mitochondria, converted to Acetyl CoA, releasing CO2 and NADH

Question 1

Glycolysis

Answer 1

Glucose broken down, 2 molecules of pyruvate

Question 2

Kreb’s cycle

Answer 2

Acetyl CoA enters cycle, producing NADH, FADH2, ATP, and CO2 in matrix

Question 3

ETC

Answer 3

NADH and FADH2 donate electrons to ETC. As electrons move through the chain, energy is released and used to pump protons across membrane

Question 4

Chemiosmosis

Answer 4

The protons pumped into the intermembrane space create a gradient. The gradient drives protons back into the matrix through ATP synthase

Question 5

Oxidative phosphorylation

Answer 5

As protons flow through ATP synthase, ADP is phosphorylated to ATP