The Golgi apparatus has a polarity or sidedness to its structure and function. Which of the following statements correctly describes this polarity?
1.
Transport vesicles fuse with one side of the Golgi and leave from the opposite side.
2.
Proteins in the membrane of the Golgi may be sorted and modified as they move from one side of the Golgi to the other.
3.
Lipids in the membrane of the Golgi may be sorted and modified as they move from one side of the Golgi to the other.
4.
All of the above correctly describe polar characteristics of the Golgi function.
Subtopic: Golgi Apparatus |
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The chemical reactions involved in respiration are virtually identical between prokaryotic and eukaryotic cells. In eukaryotic cells, ATP is synthesized primarily on the inner membrane of the mitochondria. In light of the endosymbiont theory for the evolutionary origin of mitochondria, where is most ATP synthesis likely to occur in prokaryotic cells?
1. in the cytoplasm
2. on the inner mitochondrial membrane
3. on the endoplasmic reticulum
4. on the plasma membrane
1. in the cytoplasm
2. on the inner mitochondrial membrane
3. on the endoplasmic reticulum
4. on the plasma membrane
Subtopic: Mitochondria |
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When a potassium ion (K+) moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several cellular structures. Which of the following correctly describes the order in which these structures will be encountered by the ion?
| 1. | plasma membrane → primary cell wall → cytoplasm → vacuole |
| 2. | secondary cell wall → plasma membrane → primary cell wall → cytoplasm → vacuole |
| 3. | primary cell wall → plasma membrane → cytoplasm → vacuole |
| 4. | primary cell wall → plasma membrane → lysosome → cytoplasm → vacuole |
Subtopic: Vacuole |
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Which of the following is a characteristic feature of a carrier protein in a plasma membrane?
| 1. | It is a peripheral membrane protein. |
| 2. | It exhibits a specificity for a particular type of molecule. |
| 3. | It requires the expenditure of cellular energy to function. |
| 4. | It works against diffusion |
Subtopic: Cell Membrane |
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In the following question, a statement of assertion (A) is followed by a statement of reason (R).
| Assertion (A) : | Both the solute and solvent can pass through a semipermeable membrane. |
| Reason (R) : | A semipermeable membrane is always living. |
| 1. | If both (A) & (R) are true and the (R) is the correct explanation of the assertion |
| 2. | If both (A) & (R) are true and the (R) is not the correct explanation of the assertion |
| 3. | If (A) is a true statement but (R) is false |
| 4. | If both (A) and (R) are false statements. |
Subtopic: Cell Membrane |
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Which organelle often takes up much of the volume of a plant cell?
1. lysosome
2. vacuole
3. mitochondrion
4. Golgi apparatus
1. lysosome
2. vacuole
3. mitochondrion
4. Golgi apparatus
Subtopic: Vacuole |
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Subtopic: Cytoskeleton | Cilia & Flagella |
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Which of the following combinations are correct in response to plastids?
Choose the correct answer from the options given below:
| A: | Amyloplasts store carbohydrates |
| B: | Leucoplasts gives a red colour to the plant |
| C: | Xanthophyll gives yellow and orange colours to parts of the plant |
| D: | Carotenoid pigments are responsible for tapping light energy |
| E: | Chlorophyll gives a red color |
| 1. | A & B only | 2. | A, C, D only |
| 3. | A, B, C, D only | 4. | A & D only |
Subtopic: Plastids |
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The Bacteria and Eukarya domains are distinguished by:
| 1. | All members of Bacteria are single-celled and all members of Eukarya are multicellular |
| 2. | Only Eukaryotes have DNA |
| 3. | Only Eukaryotes have the ability to grow and reproduce |
| 4. | In Bacteria, there is an absence of membranous organelles, such as a nucleus |
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
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Given below are two statements:
In light of the above statements, choose the most appropriate answer from the options given below.
| Statement I: | Cholesterol molecules present in the phospholipid bilayer maintain fluidity under different environmental conditions. |
| Statement II: | Unsaturated fatty acid chains present in the phospholipid bilayer take up more space thereby helping the membrane stay fluid. |
| 1. | Both Statement I and statement II are true |
| 2. | Both Statement I and statement II are false |
| 3. | Statement I is correct but statement II is false |
| 4. | Statement I is incorrect but statement II is true |
Subtopic: Cell Membrane |
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