Cellular Respiration and Glycolysis Concepts

What is the initial process that alters food into component chemical compounds and transports them into cells?

• Cellular Respiration

• Digestion

• Glycolysis

• Krebs Cycle

Where does the first step of cellular respiration, glycolysis, take place within a cell?

• Mitochondria

• Nucleus

• Cytoplasm

• Cell membrane

Glycolysis involves two distinct phases. What are these phases?

• Oxidation and Reduction

• Energy Investment and Energy Harvesting

• Carbon Fixation and Regeneration

• Light-dependent and Light-independent

What are the net products generated from one glucose molecule during the glycolysis process?

• 2 ATP, 2 Pyruvate, 2 NADH

• 4 ATP, 2 Pyruvate, 2 NADH

• 2 ATP, 2 Acetyl-CoA, 2 NADH

• 2 ATP, 2 Pyruvate, 2 FADH2

What happens to pyruvate molecules when oxygen is present?

• They are converted into lactic acid.

• They enter the mitochondria and undergo oxidation.

• They are immediately broken down into carbon dioxide and water.

• They are stored in the cytoplasm for later use.

What compound is both the starting and ending molecule in the Citric Acid Cycle?

• Citric acid

• Acetyl-CoA

• Pyruvate

• Oxaloacetate

What is the role of oxygen in the electron transport chain?

• It acts as an energy carrier.

• It pumps hydrogen ions across the membrane.

• It is the terminal electron acceptor, forming water.

• It synthesizes ATP directly.

On average, how many ATP molecules are produced per glucose molecule during the entire process of cellular respiration?

• 2 ATP

• 4 ATP

• 10-12 ATP

• 32-36 ATP