Q. No.Plants can get along without respiratory organs. What may be the reason/s for this?
I. Each plant part takes care of its own gas exchange needs
II. Plants do not present great demands for gas exchange
1. Both I and II
2. Only I
3. Only II
4. Neither I nor II
I. Each plant part takes care of its own gas exchange needs
II. Plants do not present great demands for gas exchange
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In Section 14.1, it is written that most cells of a plant have at least a part of their surface in contact with air. The arguments in favor of this statement include all except:
1. Flattened leaves
2. Closely packed parenchyma in most regions
3. Presence of lenticels
4. Mostly dead cells in the interior
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The enzymatic machinery to partially oxidize glucose without the help of oxygen is present in:
1. All living organisms
2. All prokaryotes only
3. Prokaryotes and obligate anaerobes only
4. Facultative and obligate anaerobes only
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Sucrose is converted into glucose and fructose by the enzyme:
| 1. Sucrase | 2. Aldolase |
| 3. Invertase | 4. Zymase |
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How many ATP molecules are directly synthesized in glycolytic pathway from one glucose molecule?
| 1. 2 | 2. 4 |
| 3. 6 | 4. 10 |
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What is the metabolic fate of pyruvate?
1. It is the end product of glycolytic pathway
2. It is reduced to acetyl CoA in the presence of oxygen
3. It depends on the cellular needs
4. It is decarboxylated in the cytosol
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The maximum concentration of alcohol in beverages that are naturally fermented is about:
| 1. 5 – 8 % | 2. 13 – 15 % |
| 3. 33 – 34 % | 4. 47 – 49 % |
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The continued oxidation of acetyl CoA via the TCA cycle requires the continued replenishment of:
| I. Oxaloacetic acid | II. NAD+ | III. FAD |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II and III |
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During the conversion of succinyl CoA to succinic acid in TCA cycle:
1. One molecule of ATP is directly synthesized
2. is reduced
3. FAD is reduced
4. One molecule of GTP is synthesized
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