MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For which organelle proton motive force is also a source of energy? |
| A. | nucleus |
| B. | ribosomes |
| C. | mitochondrion |
| D. | golgi complex |
| Answer» D. golgi complex | |
| 2. |
The maintenance of proton motive force requires that inner mitochondrial membrane remains permeable to protons. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The approximate proton motive force of an actively respiring mitochondrion is ____________ mV. |
| A. | 220 |
| B. | 240 |
| C. | 260 |
| D. | 280 |
| Answer» B. 240 | |
| 4. |
The contribution made by electric potential versus pH gradient to the proton motive force ( p) is determined by which property of the mitochondrial membrane? |
| A. | thickness |
| B. | position in the cell |
| C. | permeability |
| D. | number of cristae |
| Answer» D. number of cristae | |
| 5. |
Proton motive force is the net sum of how many gradient components? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 6. |
The free energy released during electron transport is utilized to move protons from _____________ to inner membrane and cytosol. |
| A. | extracellular environment |
| B. | outer membrane |
| C. | nucleus |
| D. | matrix |
| Answer» E. | |