Q. No.The correct chronological sequence of protein complexes in the thylakoid membrane involved in light reactions is:
1.
Photosystem II (PS II), Cytochrome b6f complex, Photosystem I (PS I), and ATP synthase.
2.
Photosystem I (PS I), Cytochrome b6f complex, Photosystem II (PS II), and ATP synthase.
3.
Photosystem II (PS II), Photosystem I (PS I), Cytochrome b6f complex, and ATP synthase.
4.
Photosystem I (PS I), Photosystem II (PS II), Cytochrome b6f complex, and ATP synthase.
The enzymes for synthesis of organic molecules, in autotrophic bacteria, are located:
1. on chloroplast membranes
2. in the cytosol
3. in the nucleoid region
4. along the inner surface of the plasma membrane
Oxygen, during oxygenic photosynthesis, is produced during:
1. cyclic photophosphorylation
2. the light-dependent reactions involving photosystems I and II
3. Calvin cycle
4. the Krebs cycle
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The ions comprising the Oxygen Evolving Complex associated with PS II are:
| 1. | Manganese and Magnesium | 2. | Manganese and Calcium |
| 3. | Calcium and Iron | 4. | Magnesium and Iron |
In oxygenic photosynthesis, the release of oxygen is a byproduct of:
1. chemiosmosis
2. reducing by FNR
3. splitting the water molecules
4. cyclic photophosphorylation
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The greatest problem with photorespiration is faced by:
| 1. | C4 plants | 2. | C3 plants |
| 3. | CAM plants | 4. | purple sulfur bacteria |
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The net reaction of all light-dependent reactions in oxygenic photosynthesis is:
| 1. | 2H2O + 2NAD+ + 3ADP + 3Pi \(\rightarrow\) O2 + 2NADH + 3ATP |
| 2. | 2H2O + 3NAD+ + 2ADP + 3Pi \(\rightarrow\) O2 + 3NADH + 2ATP |
| 3. | 2H2O + 2NADP+ + 3ADP + 3Pi \(\rightarrow\) O2 + 2NADH + 3ATP |
| 4. | 2H2O + 3NADP+ + 2ADP + 3Pi \(\rightarrow\) O2 + 3NADH + 3ATP |
The higher the energy in photons,
1. the longer their wavelengths
2. the shorter their wavelengths
3. the lesser will be the rate of photosynthesis
4. the larger will be the photorespiratory loss
The diagram shows the famous Engelmann experiment that helped us understand important aspects of the process of photosynthesis. What conclusion can be drawn by the pattern of accumulation of aerobic bacteria shown in the diagram?
| 1. | Excess carbon dioxide is released by the alga in the area of accumulation. |
| 2. | Only red and violet lights are effective for photosynthesis. |
| 3. | In the areas of accumulation, most oxygen was liberated by the alga. |
| 4. | Bacteria are attracted to red and blue light. |
The electrons excited to higher energy levels during photosynthesis belong to:
| 1. | Water | 2. | RuBP |
| 3. | glucose | 4. | chlorophyll |
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