The greatest problem with photorespiration is faced by:
1. | C4 plants | 2. | C3 plants |
3. | CAM plants | 4. | purple sulfur bacteria |
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 given diagram shows the scheme of:
1. | Cyclic photophosphorylation and Y is NADPH |
2. | Cyclic photophosphorylation and Y is ATP |
3. | Non-Cyclic photophosphorylation and Y is NADPH |
4. | Non-Cyclic photophosphorylation and Y is ATP |
The number of turns of Calvin cycle required to produce one molecule of Glyceraldehyde 3 Phosphate is:
1. | 1 | 2. | 2 |
3. | 3 | 4. | 6 |
Identify the correct statement regarding the functioning of photosystem II?
1. | The reaction center is P700. |
2. | It works after PS I in non cyclic photophosphorylation. |
3. | Water splits and carbon dioxide is released. |
4. | The electron vacancies in P680 are filled by electrons derived from water. |
The products of non-cyclic photophosphorylation include:
1. | ATP and P700 | 2. | ATP and NADPH |
3. | ADP and NADP | 4. | P700 and P680 |
The and photosynthesis pathways are so called because the initial carbon fixation product in them are respectively:
1. | pyruvate; malate |
2. | malate; pyruvate |
3. | 3-phosphoglycerate; oxaloacetic acid |
4. | glyceraldehyde 3-phosphate; phospho-enol-pyruvate (PEP) |
Light dependent reactions are so called because they require light:
1. | to provide electrons for the process |
2. | to split the water molecule |
3. | to impart energy to the electrons in the reaction center |
4. | to hydrolyse ATP molecules |
Chemiosmosis in chloroplasts is possible because of:
1. | establishment of a proton gradient across the thylakoid membrane. |
2. | diffusion of electrons through the ATP synthase. |
3. | osmosis of water from thylakoid to stroma. |
4. | presence of large amount of oxygen in the stroma. |
The following diagram shows the photosynthetic carbon cycle. A and B can respectively be:
1. Pyruvate; malate or aspartate
2. Phoshoglycerate; fumarate or aspartate
3. Phosphoenol pyruvate; malate or aspartate
4. Phosphoenol pyruvate; fumarate or aspartate