MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
Stroma targeting domain is located in the ________________ |
| A. | chloroplast |
| B. | mitochondria |
| C. | peptide |
| D. | transit peptide |
| Answer» E. | |
| 2. |
Most proteins destined for uptake by the chloroplasts are synthesized with a ________________ |
| A. | removable C-terminal sequence |
| B. | removable N-terminal sequence |
| C. | removable hydrophobic tail |
| D. | removable hydrophilic tail |
| Answer» C. removable hydrophobic tail | |
| 3. |
In how many subcompartments of the chloroplasts, can the proteins be delivered? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 4. |
Following its entry into the mitochondrial matrix, the peptide is _______________ |
| A. | degraded |
| B. | converted to phagosome |
| C. | folded to its native conformation |
| D. | hydrolyzed |
| Answer» D. hydrolyzed | |
| 5. |
Hsp 70 and Hsp 90 are ____________ involved in the mitochondrial uptake of proteins. |
| A. | chaperones |
| B. | receptors |
| C. | ligands |
| D. | glycolipids |
| Answer» B. receptors | |
| 6. |
Mitochondrial matrix proteins have a target sequence, called presequence located at __________ |
| A. | N-terminus |
| B. | C-terminus |
| C. | interstitial site |
| D. | center of the sequence |
| Answer» B. C-terminus | |
| 7. |
Most of the proteins of mitochondria are synthesized in the ______________ |
| A. | mitochondrial matrix |
| B. | mitochondrial membrane |
| C. | cytosol |
| D. | medial cisternae |
| Answer» D. medial cisternae | |
| 8. |
For which of the following organelles, the proteins to be imported remain in their native folded state? |
| A. | Peroxisomes |
| B. | Mitochondrion |
| C. | Chloroplast |
| D. | Endoplasmic reticulum |
| Answer» B. Mitochondrion | |
| 9. |
Eough endoplasmic reticulum imports its proteins posttranslationally. |
| A. | True |
| B. | False |
| Answer» C. | |