Photorespiration

Q. Oxidation of one molecule of $NADH+H^{+}$ yields ______ molecules of ATP.

1. 3
2. 2
3. 8
4. 38

Q. Which of the following is produced during photorespiration in $C_3$ plants?

1. 2 molecules of 3-phosphoglycerate
2. 2 molecules of phosphoglycolate
3. 1 molecule of phosphoglycerate and 1 molecule of phosphoglycolate
4. 1 molecule of phosphoglycerate and 2 molecules of phosphoglycolate

Q.

The amino acids produced during the Glycolate pathway of photorespiration are

1. Serine and glycine

2. Glycine and tryptophan

3. Serine and tryptophan

4. Glycine and alanine

Q. In photorespiration, which is a light induced cyclic oxidation of photosynthetic intermediates with the help of oxygen, the substrate is:

1. Glycolate
2. Glucose
3. Pyruvic acid
4. Acetyl Co-A

Q.

Rubisco:

1. catalyzes the carboxylation of CO2 to ribulose 1, 5-bisphosphate

2. initiates photorespiration when the CO2/O2 ratio is low.

3. catalyzes the reduction of two molecules of PGAL to form glucose.

4. a and b but not c

Q. Which of the following is a correct sequence of cell organelles during photorespiration?

1. Chloroplast, peroxisome, mitochondrion
2. Chloroplast, mitochondrion, vacuole
3. Chloroplast, vacuole, peroxisome
4. Chloroplast, peroxisome, golgi bodies

Q. The correct sequence of cell organelles during photorespiration is:

1. Chloroplast, mitochondria, peroxisome
2. Chloroplast, vacuole, peroxisome
3. Chloroplast, golgi bodies, mitochondria
4. Chloroplast, rough endoplasmic reticulum, dictyosomes

Q. In photorespiration, use of $O_2$ occurs in

1. chloroplast and mitochondria
2. peroxisome, chloroplast, and mitochondria
3. chloroplast and peroxisome
4. peroxisome and mitochondria

Q. The process which makes major difference between $C_3$ and $C_4$ plants is

1. respiration
2. glycolysis
3. Calvin cycle
4. photorespiration