1. | Despite great morphological difference between eucaryotic cells and prokaryotes, they are remarkably similar metabolically. |
2. | The 80S ribosomes of eukaryotes are made up of 50S and 30S subunits. |
3. | The rough part of rough endoplasmic reticulum is caused by bound ribosomes in the process of synthesizing ER proteins. |
4. | The nucleolus is where the structural RNA for the cells ribosomes is transcribed from DNA. |
I: | SER are the sites for lipid synthesis |
II: | RER has ribosomes attached to ER |
III: | In prokaryotes, only RER are present |
1. | Transportation | 2. | Nuclear division |
3. | Protein synthesis | 4. | Motility |
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. |
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.