| 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 |
Which of the following organelles in a eukaryotic cell can only be seen after staining with vital dye?
| 1. | Mitochondria | 2. | Chloroplasts |
| 3. | Nucleus | 4. | Endoplasmic reticulum |
All the following are located in the mitochondrial matrix except:
1. Single circular DNA molecule
2. Proteins of electron transport chain
3. 70 S ribosomes
4. Enzymes of Kreb’s cycle
Scientists think that mitochondria may have once been separate living organisms for all of the following reasons except that they
| 1. | have cilia and flagella |
| 2. | have their own DNA |
| 3. | can reproduce |
| 4. | can produce their own proteins |
| 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. |
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 |
| 1. | They contain enzymes for the citric acid cycle. |
| 2. | They provide a large surface area for ATP production. |
| 3. | They house the genetic material (mitochondrial DNA). |
| 4. | They regulate the passage of molecules into and out of the mitochondria. |
| I: | are also double membrane bound. |
| II: | also contain small, double-stranded circular DNA molecules and ribosomes. |