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Q. No.Read the below given statements and select the correct option.
A:
In 70S ribosome, S stands for sedimentation coefficient.
B:
Only prokaryotes have 70S ribosomes.
1.
Only A is correct
2.
Only B is correct
3.
Both A and B are correct
4.
Both A and B are incorrect
Subtopic: Ribosome and Inclusion Bodies |
65%
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Mark the following statements as true (T) or false (F) and select the correct option :
| A: | Acrocentric chromosome appears J-shaped during anaphase. |
| B: | Centromere holds two chromatids together. |
| C: | Outer membrane of nucleus is connected with SER only. |
| A | B | C | |
| 1. | T | F | F |
| 2. | F | T | T |
| 3. | T | T | F |
| 4. | F | F | T |
Subtopic: Nucleus | Nucleus: Chromosomes |
81%
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In plant vacuole, the A facilitates transport of a number of ions and other materials against concentration gradient.
Complete the above statement by choosing the correct option.
1. Tonoplast
2. Double membranous covering
3. Cell wall
4. Unit membrane
Subtopic: Endomembrane System | Vacuole |
94%
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State the following statements as true (T) or false (F) and select the correct option.
| A. | Integral proteins are partially or totally buried in the membrane. |
| B. | Human RBC membrane has approximately 52% proteins. |
| C. | Proteins move laterally within overall bilayer of membrane. |
| A | B | C | |
| 1. | T | T | T |
| 2. | F | T | F |
| 3. | T | F | T |
| 4. | F | F | T |
Subtopic: Cell Organisation | Cell Membrane | Evidence for Fluidic Nature of Membrane |
85%
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Read the following statements and choose the correct option:
| Statement I: | Polar molecules cannot pass through lipid bilayer of plasma membrane by self. |
| Statement II: | Polar molecules require carrier proteins to facilitate their transport across the membrane. |
1. Both Statements I and II are correct
2. Both Statements I and II are incorrect
3. Only Statement I is correct
4. Only Statement II is correct
Subtopic: Cell Membrane |
87%
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Read the statements and select the correct option.
| Statement- A | Mesosome helps in cell wall formation in prokaryotes. |
| Statement- B | They are infolding of plasma membrane. |
| 1. | Both A and B are correct |
| 2. | Both A and B are incorrect |
| 3. | Only A is correct |
| 4. | Only B is correct |
Subtopic: Prokaryotic Cell Organisation |
89%
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Select the correct option based on statements below:
| Assertion (A): | Plasmids are extrachromosomal DNA. |
| Reason (R): | Plasmids are found in bacteria and are useful in genetic engineering. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Prokaryotic Cell Organisation |
66%
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| Assertion (A): | Cell is the fundamental structural and functional unit of all living organisms. |
| Reason (R): | Anything less than a complete structure of a cell does not ensure independent living. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Introduction to Cell |
89%
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| Assertion(A): | ER divides the intracellular space into two distinct compartments, i.e., luminal (inside ER) and extra luminal (cytoplasm) compartments. |
| Reason(R): | The network of ER is scattered in the cytoplasm. |
Choices for Assertions and reasons:
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R) is false. |
| 4. | (A) is false, but (R) is true. |
Subtopic: Endomembrane System (Endoplasmic Reticulum) |
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| Assertion(A): | Endoplasmic reticulum (ER), golgi complex, lysosomes and vacuoles are grouped together as endomembrane system. |
| Reason(R): | The functions of endoplasmic reticulum (ER), golgi complex, lysosomes and Vacuoles are coordinated. |
Choices for Assertions and reasons:
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R) is false. |
| 4. | (A) is false, but (R) is true. |
Subtopic: Endomembrane System |
94%
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