1. | Inclusion body | 2. | FTS-Z elements |
3. | Microbody | 4. | Lysosomes |
Assertion(A): | The mitochondria, chloroplast and peroxisomes are not considered as part of the endomembrane system. |
Reason (R): | The mitochondria, chloroplast and peroxisomes are single membrane bound organelles. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
3. | (A) is True; (R) is False |
4. | Both (A) and (R) are False |
1. | Unless specifically stained, mitochondria are not easily visible under the microscope. |
2. | The number of mitochondria per cell is fixed irrespective of the physiological activity of the cells. |
3. | The inner membrane forms a number of infoldings called the cristae towards the matrix. |
4. | Mitochondria are the sites of aerobic respiration. |
I: | All cells arise from pre-existing cells. |
II: | Prokaryotic cells do not have any organelles. |
III: | Eukaryotic cells have only membrane bound organelle. |
IV: | Centrosome helps in cell division in plants and animals. |
Statement I: | The outer nuclear membrane usually remains continuous with the endoplasmic reticulum and also bears ribosomes on it. |
Statement II: | Nuclear pores are the passages through which movement of RNA from nucleus to the cytoplasm and protein molecules from the cytoplasm to the nucleus takes place. |
1. | Statement I is correct; Statement II is correct |
2. | Statement I is correct; Statement II is incorrect |
3. | Statement I is incorrect; Statement II is correct |
4. | Statement I is incorrect; Statement II is incorrect |
1. | Centrosome is an organelle usually containing two cylindrical structures called centrioles. |
2. | Both the centrioles in a centrosome lie parallel to each other in which each has an organisation like the cartwheel. |
3. | Centrioles are made up of nine evenly spaced peripheral fibrils of tubulin protein where each of the peripheral fibril is a triplet. |
4. | The central part of the proximal region of the centriole is also proteinaceous and called the hub. |
1. | cytoskeleton | 2. | MTOC |
3. | Contractile elements | 4. | vimentin |