Chapter 7

Question 1

Redox reactions

Answer 1

Reduction-oxidation reaction. Electrons are lost in oxidation and gained in reduction

Question 2

Exergonic reaction

Answer 2

Releases energy

Question 3

Activation energy

Answer 3

Minimum energy needed to start a chemical reaction

Question 4

Glycolysis

Answer 4

Happens in cytoplasm. Splits glucose into molecules of pyruvate; produces small amounts of ATP and NADH

Question 5

Pyruvate oxidation

Answer 5

Happens in mitochondrial matrix. Converts pyruvate into acetyl-CoA; releases CO2 and transfers electrons to NADH

Question 6

Krebs cycle

Answer 6

Happens in mitochondrial matrix. Completes oxidation of carbon, producing CO2, NADH, and FADH2

Question 7

Oxidative phosphorylation

Answer 7

Happens in inner mitochondrial membrane. Uses electron transport chain and chemiosis to produce most of the cell’s ATP

Question 8

Electron transport chain

Answer 8

A series of proteins that transfer electrons and pump protons

Question 9

Chemiosis

Answer 9

The flow of protons back across the membrane through ATP synthase to make ATP