MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following actions are not affected by antimicrobial agents? |
| A. | cell wall synthesis |
| B. | nucleic acid synthesis |
| C. | protein synthesis |
| D. | capsule formation |
| Answer» E. | |
| 2. |
A suspension of E.coli exposed to heat treatment may yield a greater number of survivors if a plating medium of _____________ is used. |
| A. | peptone |
| B. | trypticase soy agar |
| C. | deoxycholate agar |
| D. | potato dextrose |
| Answer» C. deoxycholate agar | |
| 3. |
Which of the following actions are not affected by antimicrobial agents? |
| A. | cell wall synthesis |
| B. | nucleic acid synthesis |
| C. | protein synthesis |
| D. | capsule formation |
| Answer» E. | |
| 4. |
How much time is required by the young cells to be killed by a lethal agent? |
| A. | 24 hours |
| B. | 3-4 hours |
| C. | 30 mins |
| D. | 5 mins |
| Answer» D. 5 mins | |
| 5. |
Which of the following show the maximum resistance to physical and chemical agents? |
| A. | Viruses |
| B. | Mold spores |
| C. | Bacterial spores |
| D. | E.coli |
| Answer» D. E.coli | |
| 6. |
A high concentration of which of the following compounds in the material generally increases the thermal resistance of microorganisms? |
| A. | proteins |
| B. | carbohydrates |
| C. | lipids |
| D. | salts |
| Answer» C. lipids | |
| 7. |
The effectiveness of heat in killing microorganisms is much greater in _____________ |
| A. | acid |
| B. | alkali |
| C. | neutral |
| D. | acid and alkali |
| Answer» B. alkali | |
| 8. |
We require less time to kill the population of many cells. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
A suspension of E.coli exposed to a heat treatment may yield a greater number of survivors if a plating medium of _____________ is used. |
| A. | peptone |
| B. | trypticase soy agar |
| C. | deoxycholate agar |
| D. | potato dextrose |
| Answer» C. deoxycholate agar | |
| 10. |
In which of the following situations will the logarithmic plot of survivors be constant? |
| A. | physiological conditions are different |
| B. | cells of microbial population vary in size |
| C. | age and physiological conditions are uniform |
| D. | temperature conditions are different |
| Answer» D. temperature conditions are different | |