Q. No.Which of the following functions is carried out by the cytoskeleton in a cell?
1.
Transportation
2.
Nuclear division
3.
Protein synthesis
4.
Motility
A. Mitochondria
B. Endoplasmic Reticulum
C. Chloroplasts
D. Golgi complex
E. Peroxisomes
Choose the most appropriate answer from the options given below:
| 1. | A, D and E only | 2. | B and D only |
| 3. | A, C and E only | 4. | A and D only |
| I: | In bacteria, the mesosomes are formed by the extensions of the plasma membrane. |
| II: | The mesosomes, in bacteria, help in DNA replication and cell wall formation. |
1. Statement I is correct but Statement II is incorrect
2. Statement I is incorrect but Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
| A: | It is the important site for the formation of glycoprotein and glycolipids |
| B: | It produces cellular energy in the form of ATP |
| C: | It modifies the protein synthesized by ribosomes on ER |
| D: | It facilitates the transport of ions |
| E: | It provides mechanical support |
| 1. | (B) and (C) only | 2. | (A) and (C) only |
| 3. | (A) and (D) only | 4. | (D) and (E) only |
Consider the given two statements:
Statement I: All life comes from pre-existing life.
Statement II: All cells arise from pre-existing cells
1. Statement I is true; Statement II is true
2. Statement I is true; Statement II is not true
3. Statement I is not true; Statement II is true
4. Statement I is not true; Statement II is not true
The organelles in a eukaryotic cell that have their own genome are:
1. RER and SER
2. Mitochondria and Chloroplasts
3. Plasmids and Plastids
4. Nucleus and Ribosomes
Consider the two statements:
Assertion: The cells of testes and ovaries have abundance of Smooth Endoplasmic Reticulum.
Reason: The cells of testes and ovaries secrete steroid hormones.
1. Both Assertion and Reason are true and Reason correctly explains the Assertion.
2. Assertion is true but Reason is False.
3. Both Assertion and Reason are true but the Reason does not explain the Assertion.
4. Assertion is false but Reason is true.
| I | Chloroplasts | contain chlorophyll and carotenoid pigments |
| II | Amyloplasts | store carbohydrates |
| III | Elaioplasts | store oils and fats |
| IV | Aleuroplasts | store proteins |
2. Only II, III and IV
3. None, all are correctly matched
4. Only III and IV
The isolated lysosomal vesicles have been found to be very rich in:
1. phosphate and chloride ions
2. cytoprotective pigment molecules
3. lymphokines like interleukins and interferons
4. acid hydrolases
| I: | SER are the sites for lipid synthesis |
| II: | RER has ribosomes attached to ER |
| III: | In prokaryotes, only RER are present |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
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