Chapter 7: Cellular Respiration and Fermentation

Question 1

aerobic respiration

Answer 1

• the breakdown of organic molecules
• exergonic
• consumes organic molecules (sugars) w/ O2
• yields ATP (energy), carbon dioxide, and water

Question 2

anaerobic respiration

Answer 2

• a partial degredation of sugars that occurs without O2
• exergonic

Question 3

oxidation-reduction reactions/redox reactions

Answer 3

chemical reactions that transfer electrons between reactants; part of cellular respiration

Question 4

oxidation

Answer 4

• loses electrons
• gain in positive charges
• loss of H
• gain of O

Question 5

reduction

Answer 5

• gains electrons
• reduced positive charge
• gain of H
• loss of O

Question 6

glycolysis

Answer 6

• does not require O2
• breaks down glucose into two molecules of pyruvate in the cytosol
• reactants: glucose, 4 ATP formed - 2 ATP used, 2 NAD+ + 4e- + 4H+
• products: 2 pyruvate, 2 ATP molecules, and 2 NADH (coenzyme transporter)

Question 7

what are the reactants of cellular respiration?

Answer 7

• glucose (C6H12O6)
• 6 oxygen (O2)

Question 8

what are the products of cellular respiration?

Answer 8

• 6 carbon dioxide (CO2)
• 6 water (H2O)
• ATP

Question 9

what happens to the pyruvate after glycolysis?

Answer 9

• transported into the mitochondria and oxidized, turning into acetyl COA
• carcon dioxide released
• 2 NADH produced