Q. No.Robin Hill discovered that the isolated chloroplasts from plants can release oxygen when they are illuminated by sunlight in the presence of a suitable electron acceptor. This showed:
I.
oxygen \((O_2)\) is produced by a reaction that is separate from carbon dioxide \((CO_2)\) fixation.
II.
the reaction in which oxygen is released requires light.
III.
the light dependent reaction of photosynthesis is a result of a series of redox reactions.
1.
I and II only
2.
I and III only
3.
II and III only
4.
I, II and III
| 1. | Water and Glucose |
| 2. | Water and ATP |
| 3. | Oxygen and Carbon dioxide |
| 4. | ATP and NADPH |
The factors that can be limiting for the light independent reactions of photosynthesis are:
| 1. | CO2, temperature, and light |
| 2. | CO2, light, and water |
| 3. | water, temperature, and CO2 |
| 4. | oxygen, water, and temperature |
The absorption spectrum in the given diagram will be of:
| 1. | Chlorophyll a | 2. | Chlorophyll b |
| 3. | Carotenoids | 4. | Retinol |
The reactions of the Calvin Cycle occur in:
| 1. | stroma of the chloroplast |
| 2. | thylakoid membrane |
| 3. | lumen of the thylakoids |
| 4. | space between outer and inner membrane of the chloroplast |
The wavelengths of light most useful in photosynthesis are:
| 1. | green and orange | 2. | red and blue |
| 3. | infrared and yellow | 4. | red and green |
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
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 |
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