Energy Expenditure in Calvin Cycle

Q. The $C_3$ cycle is called so because

1. 3 molecules of $C{O}_2$ are required for the formation of 1 glucose
2. 3 ATP and 3 NADPH are utilized in this cycle
3. the cycle has to be repeated 3 times to generate 1 glucose molecule
4. the first stable product of $C{O}_2$ fixation is a 3 carbon compound

Q. For the synthesis of one molecule of glucose, the Calvin cycle repeats how many times?

1. 3
2. 4
3. 5
4. 6

Q. To form one molecule of glyceraldehyde phosphate in Calvin cycle

1. 9 ATP and 36 NADPH are required
2. 6 ATP and 6 NADPH are required
3. E ATP and 3 NADPH are required
4. 9 ATP and 6 NADPH are required

Q. ATP molecules required for synthesis of a glucose molecule in Calvin Benson cycle are

1. 36
2. 38
3. 12
4. 18

Q. Ribulose-1, 5-bisphosphate carboxylase/oxygenase enzyme catalyses the carboxylation between

1. Oxaloacetic acid and Acetyl CoA
2. Ribulose-1, 5-bisphosphate and carbon dioxide
3. Ribulose-5-phosphate and oxygen
4. 3-Phospho glyceraldehyde and dihydroxyacetone phosphate

Q. ____________ are required for the formation of one molecule of glucose during the Calvin pathway.

1. $3C{O}_2+18ATP+18NADPH$
2. $6C{O}_2+12ATP$
3. $6C{O}_2+18ATP+12NADPH$
4. $6C{O}_2+18ATP+24NADPH$

Q. catalyses the carboxylation of ribulose-1, 5-bisphosphate using carbon dioxide.

1. DHAP
2. 3-PGA
3. Fo/F1 subunit
4. RuBisCO

Q. The assimilatory power required in reduction phase of calvin cycle per one $C{O}_2$ molecule is ________.

1. 2 ATP and 2 NADPH
2. 2 ATP and 3 NADPH
3. 1 ATP and 2 NADPH
4. 3 ATP and 2 NADPH

Q.

Quantum yield of photosynthesis is

1. 9%

2. 12%

3. 33%

4. 8%