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
A | Inner membrane | Site of location of electron transport chain |
B | Outer membrane | Forms the continuous limiting boundary of the organelle |
C | Cristae | Increase the surface area |
D | Matrix | Site for 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. | The number of mitochondria per cell is same in all the cells of human body. |
2. | The inner membrane forms a number of infoldings called the cristae towards the matrix. |
3. | They divide by binary fission. |
4. | They are called as ‘power houses’ of the cell. |