Chapter Six

Question 1

What is the overall reaction for aerobic respiration

Answer 1

C6H12O6 + 6O2 —> 6CO2 + 36 ATP

Question 2

Explain single-celled organisms and O2 and CO2

Answer 2

• These gases simply diffuse across membranes
• More complex orgamisms have specialized organs such as gills or lungs for gas exchange

Question 3

What do plants use for cellular respiration

Answer 3

Oxygen

Question 4

What are the series of processes that occurs almost simultaneously in aerobic respiration

Answer 4

• Glycolisis
• Citric Acid cycle
• Electron transport chain (Oxidative phosphorylation)

Question 5

Explain glycolysis

Answer 5

• Glucose is broken down into two 3-carbon pyruvate molecules (CH3COCOOH)
• Glycolysis also generates two ATP molecules
• Occurs in the cytosol of a cell

Question 6

Explain the Citric Acid cycle

Answer 6

• AKA Kreb’s Cycle
• Occurs inside the mitochondria
  Pyruvate is oxidized and CO2 is released
• Makes use of two high-energy electron carries NADH and FADH2
• Cell uses them to generate ATP

Question 7

Explain the Electron transport chain

Answer 7

• AKA Oxidative phosphorylation
• Also occurs at the cristae of the mitochondria
• Transfers energy-rich electrons from NADH and FADH2 through a series of membrane proteins

Question 8

Explain cellular respiration fully

Answer 8

• A biological process in which organic compounds are converted into energy
• Consists of three pathways that generate ATP from food

Question 9

What are the types of cellular respiration

Answer 9

1. Aerobic Cellular Respiration
2. Anaerobic Respiration
3. Fermentation

Question 10

Explain Aerobic Cellular Respiration

Answer 10

A cell uses Oxygen gas (O2) and glucose to
generate ATP

Question 11

Explain Anaerobic Respiration

Answer 11

Generates ATP from glucose without using O2

Question 12

Explain Fermentation

Answer 12

Generates ATP from glucose without using O2

Question 13

What is the first step in the breakdown of glucose to extract energy for cell metabolism

Answer 13

Glycolysis