Understanding Aerobic Respiration

What are the main steps of glycolysis?

• Protein catabolism

• The main steps of glycolysis are: 1) Glucose phosphorylation, 2) Isomerization, 3) Second phosphorylation, 4) Cleavage, 5) Isomerization, 6) Oxidation and phosphorylation, 7) ATP generation, 8) Second ATP generation, 9) Enolization, 10) Conversion to pyruvate.

• Glycogen synthesis

• Lipid metabolism

Where does glycolysis occur in the cell?

• Endoplasmic Reticulum

• Nucleus

• Mitochondria

• Cytoplasm

What is the net gain of ATP from one glucose molecule during glycolysis?

• 2 ATP

• 3 ATP

• 4 ATP

• 1 ATP

Describe the main events that occur during the Krebs Cycle.

• The Krebs Cycle produces glucose from pyruvate.

• The Krebs Cycle occurs in the cytoplasm of the cell.

• The Krebs Cycle directly generates oxygen as a byproduct.

• The Krebs Cycle involves the conversion of acetyl-CoA to CO2, producing NADH, FADH2, and GTP/ATP through a series of enzymatic reactions.

What are the products of one turn of the Krebs Cycle?

• 3 NADH, 1 FADH2, 1 GTP (or ATP), 2 CO2

• 3 NADH, 1 FADH2, 2 GTP, 1 CO2

• 2 NADH, 2 FADH2, 1 GTP, 1 CO2

• 4 NADH, 0 FADH2, 2 GTP, 3 CO2

Where does the Krebs Cycle take place in the cell?

• Mitochondria

• Ribosome

• Cytoplasm

• Nucleus

Explain the role of NADH and FADH2 in cellular respiration.

• NADH and FADH2 are used to break down glucose directly.

• NADH and FADH2 are primarily involved in protein synthesis.

• NADH and FADH2 serve as electron carriers that facilitate ATP production in cellular respiration.

• NADH and FADH2 are waste products of cellular respiration.

What is the primary function of the Electron Transport Chain?

• To generate ATP through oxidative phosphorylation.

• To produce glucose through photosynthesis.

• To transport electrons to the nucleus of the cell.

• To synthesize proteins in the mitochondria.

How many ATP molecules are produced during the Electron Transport Chain per glucose molecule?

• 10 to 12 ATP molecules

• 20 to 24 ATP molecules

• 40 to 50 ATP molecules

• 28 to 34 ATP molecules

What is oxidative phosphorylation and how is it related to ATP production?

• Oxidative phosphorylation occurs only in the cytoplasm.

• Oxidative phosphorylation is a process that produces ATP through the electron transport chain and chemiosmosis in mitochondria.

• ATP is produced solely through glycolysis.

• Oxidative phosphorylation does not involve oxygen.