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 |
72%
From NCERT
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Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large and complex lipids. Which cellular organelle must be involved in this condition?
1. the endoplasmic reticulum
2. the Golgi apparatus
3. the lysosome
4. mitochondria
1. the endoplasmic reticulum
2. the Golgi apparatus
3. the lysosome
4. mitochondria
Subtopic: Endomembrane System (Endoplasmic Reticulum) |
64%
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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 |
68%
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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
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 |
52%
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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 |
From NCERT
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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 |
96%
From NCERT
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Subtopic: Cytoskeleton | Cilia & Flagella |
80%
From NCERT
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Which of the following combinations are correct in response to plastids?
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
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
Choose the correct answer from the options given below:
| 1. | A & B only | 2. | A, C, D only |
| 3. | A, B, C, D only | 4. | A & D only |
Subtopic: Plastids |
73%
From NCERT
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In bacterial flagellum, the longest portion that extends from the cell surface to the outside in order to help motility is
1. Basal body
2. Hook
3. Filament
4. Pili
1. Basal body
2. Hook
3. Filament
4. Pili
Subtopic: Cilia & Flagella |
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