Q. No.The ATP synthase complexes in a plant cell are located:
I:
in the thylakoid membrane
II:
in the plasma membrane
III:
in the inner mitochondrial membrane
1.
I and II only
2.
I and III only
3.
II and III only
4.
I, II and III
In chloroplasts, protons are actively pumped from
| 1. | the intermembrane space to the matrix. |
| 2. | the matrix to the stroma. |
| 3. | the stroma to the thylakoid space. |
| 4. | the thylakoid space to the intermembrane space. |
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 |
The relationship between photosynthesis and respiration can be best described as:
| 1. | Photosynthesis and respiration are reversal of each other in biochemical pathways. |
| 2. | Photosynthesis stores energy in complex organic molecules, while respiration releases it. |
| 3. | Respiration occurs only in animals and photosynthesis occurs only in plants. |
| 4. | Respiration results in formation of ATP but photosynthesis can only use them. |
Probably the strongest biological oxidizing agent is P680+ because:
| 1. | It accepts electron in both photosystems. |
| 2. | It transfers electrons to plastoquinone. |
| 3. | It strongly attracts electrons formed by the splitting of water. |
| 4. | It transfers electrons to plastocyanin. |
The primary function of the Calvin cycle is to:
| 1. | use ATP to release carbon dioxide |
| 2. | use NADPH to release carbon dioxide |
| 3. | split water and release oxygen |
| 4. | fix inorganic carbon to simple sugars |
Which of the following must occur in the biochemical pathway of Calvin cycle?
| 1. | addition of a pair of electrons from NADPH |
| 2. | inactivation of RuBP carboxylase enzyme |
| 3. | regeneration of ATP from ADP |
| 4. | regeneration of RuBP |
Given below is the schematic diagram of Calvin cycle taking place in a certain plant. ATP used by this plant is radioactively labeled. One turn of the cycle is allowed to happen. Radioactivity would be seen in all except:
1. A
2. B
3. C and D
4. E
For the synthesis of glucose, the source of hydrogen atoms is:
| 1. | Water | 2. | NADPH |
| 3. | FADH2 | 4. | Monosaccharides |
The pathway shown in the figure will be seen in:
1. plants
2. CAM plants
3. plants
4. All photosynthetic plants
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