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Q. No.Polysome is formed by:
1.
several ribosomes attached to a single mRNA
2.
many ribosomes attached to a strand of
endoplasmic reticulum
3.
a ribosome with several subunits
4.
ribosomes attached in a
linear arrangement
| 1. | several ribosomes attached to a single mRNA |
| 2. | many ribosomes attached to a strand of endoplasmic reticulum |
| 3. | a ribosome with several subunits |
| 4. | ribosomes attached in a linear arrangement |
Subtopic: Ribosome and Inclusion Bodies |
89%
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AIPMT - 2008
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The two subunits of ribosome remain united at a critical ion level of:
1. copper
2. manganese
3. magnesium
4. calcium
1. copper
2. manganese
3. magnesium
4. calcium
Subtopic: Ribosome and Inclusion Bodies |
68%
AIPMT - 2008
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Vacuole in a plant cell:
| 1. | is membrane-bound and contains storage proteins and lipids |
| 2. | is membrane-bound and contains water and excretory substances |
| 3. | lacks membrane and contains air |
| 4. | lacks membrane and contains water and excretory substances |
Subtopic: Vacuole |
86%
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AIPMT - 2008
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Which one of the following is not a constituent of the cell membrane?
1. Cholesterol
2. Glycolipids
3. Proline
4. Phospholipids
Subtopic: Cell Membrane |
86%
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AIPMT - 2007
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In germinating seeds fatty acids are degraded exclusively in the:
1. proplastids
2. glyoxisomes
3. peroxisomes
4. mitochondria
Subtopic: Microbodies |
68%
AIPMT - 2008
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which one of the following statements about mycoplasma is wrong?
1. They are also called PPLO
2. They are pleomorphic
3. They are sensitive to penicillin
4. They cause disease in plants
Subtopic: Prokaryotic Cell Organisation |
60%
AIPMT - 2007
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Select the wrong statement from the following:
| 1. | Both chloroplast and mitochondria contain an inner and an outer membrane |
| 2. | Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane |
| 3. | Both chloroplasts and mitochondria contain DNA |
| 4. | The chloroplasts are generally much larger than mitochondria |
Subtopic: Mitochondria |
79%
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AIPMT - 2007
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NEET 2023 - Target Batch - Aryan Raj Singh
Which of the following statements regarding mitochondrial membrane is not correct?
| 1. | The outer membrane is permeable to all kinds of molecules |
| 2. | The enzymes of the electron transfer chain are embedded in the outer membrane |
| 3. | The inner membrane is highly convoluted forming a series of infoldings |
| 4. | The outer membrane resembles a sieve |
Subtopic: Mitochondria |
60%
AIPMT - 2006
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Hints
Which of the following statements regarding cilia is not correct?
| 1. | The organized beating of cilia is controlled by fluxes of Ca2+ across the membrane |
| 2. | Cilia are hair-like cellular appendages |
| 3. | Microtubules of cilia are composed of tubulin |
| 4. | Cilia contain an outer ring of nine doublet microtubules surrounding two single microtubules |
Subtopic: Cilia & Flagella |
51%
AIPMT - 2006
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Keeping in view the 'fluid mosaic model' for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
1. Both lipids and proteins can flip-flop
2. While lipids can rarely flip-flop, proteins cannot
3. While proteins can flip-flop, lipids cannot
4. Neither lipids nor proteins can flip-flop
Subtopic: Evidence for Fluidic Nature of Membrane |
62%
AIPMT - 2008
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