Zoology Exam6 Slides 1

Question 1

During pyruvate oxidation (which happens twice) what is donated and what is reduced?

Answer 1

Donates 2 electrons

Reduces 1 NAD+

Question 2

Pyruvate oxidation in a mitochondrion produces?

Answer 2

2 NADH (4 electrons) total to ETC
2 Acetyl groups total
2 CO2 total

Question 3

What is the final product of pyruvate oxidation?

Answer 3

Acetyl group joins coenzyme A

Question 4

Mitochondria have two membranes what are they?

Answer 4

Matrix (closer to the center)

Inter membrane space (farthest from the center)

Question 5

Which molecules transfer nucleotides?

Answer 5

GTP

ATP

Question 6

GTP donates a phosphate to what molecule in phosphorylation?

Answer 6

ADP

Question 7

Flavin adenine dinucleotide (FAD-FADH2) does what?

Answer 7

Is an electron carrier.

Confined to inner mitochondrial plasma membrane.

Question 8

Krebs cycle produces what in 2 cycles per glucose?

Answer 8

6 NADH (12 electrons) total to ETC
2 FADH2 (4 electrons) total to ETC
2 ATP total (GTP carrier)
4 CO2 total

Question 9

Glycolysis, pyruvate oxidation, + citric acid cycle does what?

Answer 9

Complete glucose breakdown

Question 10

Electron transfer= NADH and FADH2 oxidation does what?

Answer 10

Fuels trans-membrane proton (H+) pumps

Question 11

O2 accepts what at the end of the ETC?

Answer 11

Low energy electrons

Question 12

In the Mitochondrial matrix oxygen bonds with what two molecules?

Answer 12

2 H+

2 e-