How Cells Harvest Energy

Question 1

Oxidation

Answer 1

Loses Electrons

Question 2

Reduction

Answer 2

Gains Electrons

Question 3

Glycolysis

Answer 3

a series of reactions that break down glucose to produce energy for cells.

Question 4

Krebs Cycle

Answer 4

a series of chemical reactions that completes the breakdown of glucose, releasing energy and producing carbon dioxide as a waste product.

Question 5

Electron Transport Chain

Answer 5

The primary task is to transfer energy from the electron carriers to ATP molecules

Question 6

Cellular Respiration Steps

Answer 6

1. Glycolysis
2. Krebs Cycle
3. Electron Transport Chain

Question 7

Pyruvate Dehydrogenase Complex (PDC)

Answer 7

The PDC catalyzes pyruvate into acetyl-CoA

Question 8

PDC Process

Answer 8

1. Pyruvate is decarboxylated, meaning a carbon dioxide molecule (CO₂) is removed.
2. The remaining two-carbon molecule is then oxidized, and the electrons are transferred to NAD+, forming NADH.
3. Finally, the two-carbon molecule is attached to coenzyme A (CoA), forming acetyl-CoA.

Question 9

Krebs Cycle Substrates

Answer 9

Acetyl-CoA, Oxaloacetate, NAD+, FAD, H2O

Question 10

Krebs Cycle Products

Answer 10

CO2, NADH, FADH2, GTP, ATP, Oxaloacetate