Q. No.In photosynthesis, energy from light reaction to dark reaction is transferred in the form of:
1. ADP
2. ATP
3. RUDP
4. Chlorophyll
1. ADP
2. ATP
3. RUDP
4. Chlorophyll
Which one of the following concerns photophosphorylation:
| 1. | \(\mathrm{ADP}+\mathrm{AMP} \xrightarrow{\text { Lightenergy }} \text { ATP }\) |
| 2. | \(\mathrm{ADP}+\text { Inorganic } \mathrm{PO}_4 \xrightarrow{\text { Lightenergy }} \text { ATP }\) |
| 3. | \(\text { ADP }+ \text { Inorganic } \mathrm{PO}_4 \rightarrow \text { ATP }\) |
| 4. | \(\mathrm{AMP}+\text { Inorganic } \mathrm{PO}_4 \xrightarrow{\text { Lightenergy }} \text { ATP }\) |
In the sugarcane plant, 14CO2 is fixed in malic acid because the enzyme that fixes CO2 is:
| 1. | Ribulose biphosphate carboxylase |
| 2. | Phosphoenol pyruvic acid carboxylase |
| 3. | Ribulose phosphate kinase |
| 4. | Fructose phosphatase |
Which pair is wrong:
| 1. | C3 – Maize |
| 2. | C4 – Kranz anatomy |
| 3. | Calvin cycle - PGA |
| 4. | Hatch and Slack cycle – O.A.A |
For the synthesis of one glucose molecule, the Calvin cycle operates for:
| 1. | 2 times | 2. | 4 times |
| 3. | 6 times | 4. | 8 times |
The first step for initiation of photosynthesis will be:
| 1. | Photolysis of water |
| 2. | Excitement of chlorophyll molecule due to absorption of light |
| 3. | ATP formation |
| 4. | Glucose formation |
Photosynthetically active radiation (PAR) represents the following range of wavelengths:
1. 450-950 nm
2. 340-450 nm
3. 400-700 nm
4. 500-600 nm
Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:
1. Membrane potential
2. Accumulation of K ions
3. Proton gradient
4. Accumulation of Na ions
During light reaction in photosynthesis, the following are formed
- ATP and sugar
- hydrogen, O2 and sugar
- ATP, hydrogen donor and O2
- ATP, hydrogen and O2 donor
Dark reaction in photosynthesis is called so because
| 1. | It can occur in dark also |
| 2. | It does not depend directly on light energy |
| 3. | It cannot occur during day light |
| 4. | It occurs more rapidly at night |
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