MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 22 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. |
Identify the following antibiotics with their modes of action. |
| A. | A 1, B 2, C 4, D 3 |
| B. | A 2, B 1, C 3, D 4 |
| C. | A 1, B 2, C 3, D 4 |
| D. | A 3, B 4, C 2, D 1 |
| Answer» C. A 1, B 2, C 3, D 4 | |
| 2. |
In the cell cycle of a typical eukaryote, the sequence of events operating at the time of cell division is |
| A. | S phase G2 phase G1 phase M phase |
| B. | S phase M phase G1 phase G2 phase |
| C. | S phase G2 phase M phase G1 phase |
| D. | S phase G1 phase M phase G2 phase |
| Answer» D. S phase G1 phase M phase G2 phase | |
| 3. |
The number of replicons in a typical mammalian cell is |
| A. | 40-200 |
| B. | 400 |
| C. | 1000-2000 |
| D. | 50000-100000 |
| Answer» E. | |
| 4. |
A bioremedial solution to reduce oxides of nitrogen and carbon in flue gases is to integrate flue gas emission to |
| A. | micro-algal culture |
| B. | fish culture |
| C. | mushroom culture |
| D. | sericulture |
| Answer» B. fish culture | |
| 5. |
If protoplasts are placed in distilled water, they swell and burst as a result of endosmosis. The plot representing the kinetics of burst is |
| A. | <img src="http://images.interviewmania.com/wp-content/uploads/2019/12/Q-7A-1.png"> |
| B. | <img src="http://images.interviewmania.com/wp-content/uploads/2019/12/Q-7B-1.png"> |
| C. | <img src="http://images.interviewmania.com/wp-content/uploads/2019/12/Q-7C-1.png"> |
| D. | <img src="http://images.interviewmania.com/wp-content/uploads/2019/12/Q-7D-1.png"> |
| Answer» B. <img src="http://images.interviewmania.com/wp-content/uploads/2019/12/Q-7B-1.png"> | |
| 6. |
Choose the CORRECT sequence of steps involved in cytoplast production. |
| A. | Digestion of cell wall protoplast viability cybrid formation osmotic stabilizer |
| B. | Osmotic stabilizer digestion of cell wall protoplast viability cybrid formation |
| C. | Protoplast viability osmotic stabilizer digestion of cell wall cybrid formation |
| D. | Osmotic stabilizer digestion of cell wall cybrid formation protoplast viability |
| Answer» C. Protoplast viability osmotic stabilizer digestion of cell wall cybrid formation | |
| 7. |
The cytokinetic organelle in plant cells is |
| A. | centriole |
| B. | phragmoplast |
| C. | proplastid |
| D. | chromoplastid |
| Answer» C. proplastid | |
| 8. |
Which one of the following is INCORRECT about a typical apoptotic cell ? |
| A. | Phosphatidylserine is presented on the outer cell surface |
| B. | Cytochrome c is released from mitochondria |
| C. | Mitochondrial membrane potential does not change |
| D. | Annexin-V binds to the cell surface |
| Answer» D. Annexin-V binds to the cell surface | |
| 9. |
Which one of the following statements regarding G proteins is INCORRECT? |
| A. | GDP is bound to G protein in the resting stage |
| B. | GTP bound a subunit cannot reassemble with dimer |
| C. | All G proteins are trimeric |
| D. | Activation of G protein may result in activation or inhibition of the target enzymes |
| Answer» D. Activation of G protein may result in activation or inhibition of the target enzymes | |
| 10. |
ATP biosynthesis takes place utilizing the H |
| A. | Across the outer membrane of mitochondria and across the inner membrane of chloroplast |
| B. | Across the inner membrane of mitochondria and across the thylakoid membrane of chloroplast |
| C. | Within the matrix of mitochondria and across the inner membrane of chloroplast |
| D. | Within the matrix of mitochondria and within the stroma of chloroplast |
| Answer» C. Within the matrix of mitochondria and across the inner membrane of chloroplast | |
| 11. |
Which one of the following is the growth factor used for growth of tissues and organs in plant tissue culture? |
| A. | Cysteine |
| B. | Cytokinin |
| C. | Cytidylate |
| D. | Cyclic AMP |
| Answer» C. Cytidylate | |
| 12. |
Caspases are involved in the process of |
| A. | DNA replication |
| B. | Mutation and recombination |
| C. | Antibody synthes is |
| D. | Aposptosis |
| Answer» E. | |
| 13. |
The formation of peptide cross-links between adjacent glycan chains in cell synthesis is called |
| A. | Transglycosylation |
| B. | Autoglycosylation |
| C. | Autopeptidation |
| D. | Transpeptidation |
| Answer» E. | |
| 14. |
Ames test is used to determine |
| A. | the mutagenicity of a chemical |
| B. | carcinogenicity of a chemical |
| C. | both mutagenicity and carcinogenicity of a chemical |
| D. | toxicity of a chemical |
| Answer» D. toxicity of a chemical | |
| 15. |
A cell in G1 of interphase has 12 chromosomes. How many chromatids will be found per cell during metaphase II of meiosis? |
| A. | 6 |
| B. | 12 |
| C. | 18 |
| D. | 24 |
| Answer» C. 18 | |
| 16. |
Apoptosis is characterized by |
| A. | necrosis |
| B. | programmed cell death |
| C. | membrane leaky syndrome |
| D. | cell cycle arrest process |
| Answer» C. membrane leaky syndrome | |
| 17. |
Choose the correct signal transduction pathway. |
| A. | Hormone 7 TM receptor G protein cAMP PKA |
| B. | Hormone G protein 7 TM receptor cAMP PKA |
| C. | Hormone 7 TM receptor G protein PKA cAMP |
| D. | Hormone 7 TM receptor cAMP G protein PKA |
| Answer» B. Hormone G protein 7 TM receptor cAMP PKA | |
| 18. |
Some living cells (e.g. plant cell) have the capacity to give rise to whole organism. The term used to describe this property is |
| A. | morphogenesis |
| B. | androgenesis |
| C. | totipotency |
| D. | organogenesis |
| Answer» D. organogenesis | |
| 19. |
When thymidine synthesis is inhibited, eukaryotic cells will be arrested at |
| A. | End of S phase |
| B. | End of M phase |
| C. | Gl/S interphase |
| D. | G2/M interphase |
| Answer» B. End of M phase | |
| 20. |
Plastome is |
| A. | A type of plastid |
| B. | An organellar genome |
| C. | Plasmalemma protein |
| D. | None of (a), (b), (c) |
| Answer» C. Plasmalemma protein | |
| 21. |
An animal cell line was transfected with DNA extracted from a tumorous tissue. Which one of the following will be diagnostic of its tumorous transformation ? |
| A. | altered cell shape |
| B. | contact inhibition |
| C. | anchorage-independent cell division |
| D. | increased duration of cell cycle |
| Answer» D. increased duration of cell cycle | |
| 22. |
In the course of cell cycle, the level of the protein cyclin abruptly falls during |
| A. | G1 phase |
| B. | S phase |
| C. | G2 phase |
| D. | M phase |
| Answer» E. | |