Cellular respiration and photosynthesis

Question 1

Fatty acid chains can be oxidized and enter cellular respiration as:

G3P, Glucose, Pyruvate or Acetyl-CoA?

Answer 1

Acetyl-CoA.

Question 2

Which of the following processes gives the highest ATP yield after oxidative phosphorylation?

Glycolysis, Pyruvate oxidation, Citric acid cycle or Fermentation?

Answer 2

Citric acid cycle .

Question 3

Which of the following cannot enter cellular respiration?

Monosaccharides, Nucleotides, Fatty acids, Aminos acids?

Answer 3

Nucleotides.

Question 4

Which of the following is not reduced during cellular respiration:

Glucose, NAD+, FAD+, O2?

Answer 4

Glucose. It is oxidized.

NAD+ → NADH
FAD+ → FADH2
O2 → H2O

Question 5

What factors decrease the theoretical yield in ATP of cellular respiration in eukaryotes?

Answer 5

1. The inner mitochondrial membrane is somewhat leaky to protons.
2. The secondary active transport of pyruvate into the mitochondrial matrix.
3. The active transport of NADH into the mitochondrial matrix

Question 6

Which factors does not decrease the theoretical yield in ATP of cellular respiration in eukaryotes?

1. The inner mitochondrial membrane is somewhat leaky to protons.
2. The secondary active transport of pyruvate into the mitochondrial matrix.
3. The active transport of NADH into the mitochondrial matrix
4. The pumping of protons into the intermembrane space

Answer 6

4. The pumping of protons into the intermembrane space

Question 7

How many protons does 1 NADH enable the ETC to pump into the mitochondrial matrix?

Answer 7

10 protons.

4 from complex 1
4 from complex 3
2 from complex 4

Question 8

How many CO2 molecules are needed for 1 G3P to leave the Calvin cycle?

Answer 8

3 CO2 molecules

Question 9

Which if the following gives its electrons to P680?

Pigments of the antenna of photosystem 1, Pigments of the antenna of photosystem 2, P700 or H20?

Answer 9

H2O.

Question 10

Which of the following is not a molecule that participates in photosynthesis:

Ferredoxin, ADP, NADH or Rubisco?

Answer 10

NADH

In photosynthesis, it is NADPH.

Question 11

Define chemiosmosis.

Answer 11

The ability to convert the energy of a proton gradient into ATP.