Cellular Respiration

Question 1

It takes place in the cytoplasm.

Answer 1

glycolysis

Question 2

Glucose is broken down into two molecules of pyruvate.

Answer 2

Glycolysis

Question 3

ATP and NADH are produced.

Answer 3

glycolysis

Question 4

Takes place in the mitochondria.

Answer 4

Krebs Cycle

Question 5

Pyruvate is further broken down, releasing carbon dioxide.

Answer 5

Krebs Cycle

Question 6

NADH and FADH2 are produced.

Answer 6

Krebs Cycle

Question 7

Also occurs in the mitochondria.

Answer 7

Electron Transport Chain

Question 8

Electrons from NADH and FADH2 are passed through protein complexes.

Answer 8

Electron Transport Chain

Question 9

This creates a flow of protons across the inner mitochondrial membrane, generating a proton gradient.

Answer 9

Electron Transport Chain

Question 10

ATP is produced as protons flow back through ATP synthase.

Answer 10

Electron Transport Chain

Question 11

Glucose is phosphorylated, making it more reactive.

Answer 11

glycolysis

Question 12

ATP is used to activate glucose.

Answer 12

glycolysis

Question 13

The six-carbon sugar is split into two three-carbon sugars.

Answer 13

glycolysis

Question 14

What are the molecules generated in glycolysis through redox reaction?

Answer 14

NADPH & ATP

Question 15

What are the end product of glycolysis?

Answer 15

2 Pyruvate
2 ATP
2 NADH

Question 16

Each pyruvate is converted to acetyl-CoA, releasing CO2.

Answer 16

Acetyl - CoA Formation

Question 17

Acetyl-CoA combines with oxaloacetate to start the cycle.

Answer 17

Krebs Cycle

Question 18

What are the product of each cycle of krebs cycle?

Answer 18

NADH
FADH2
ATP

Question 19

Electrons from NADH and FADH2 move through protein complexes (I, II, III, IV).

Answer 19

Electron Transport Chain

Question 20

Protons are pumped across the inner mitochondrial membrane.

Answer 20

Electron Transport Chain

Question 21

Protons flow back through ATP synthase, driving ATP production.

Answer 21

Chemiosmosis

Question 22

What molecule is the final electron acceptor, forming water in ETC?

Answer 22

Oxygen

Question 23

The movement of ions across a selectively permeable membrane is used to generate ATP.

Answer 23

Chemiosmosis

Question 24

Protons moving through ATP synthase illustrate this concept in the context of cellular respiration.

Answer 24

Chemiosmosis

Question 25

ATP is formed by transferring a phosphate group directly to ADP from a substrate molecule.

Answer 25

Glycolysis & Krebs Cycle

Question 26

Through the entire process of cellular respiration (glycolysis, Krebs cycle, and ETC), one molecule of glucose can yield up to how many molecules of ATP?

Answer 26

38

Question 27

Requires oxygen and is more efficient, yielding more ATP.

Answer 27

Aerobic Respiration

Question 28

Occurs in the absence of oxygen, with glycolysis being followed by fermentation.

Answer 28

Anaerobic Respiration

Question 29

In the absence of oxygen, fermentation regenerates NAD+ from NADH produced in glycolysis, allowing glycolysis to continue.

Answer 29

Fermentation

Question 30

Product Molecules of the Krebs Cycle.

Answer 30

3 NADPH 1 FADH2 1 ATP 2 CO2