MCQOPTIONS
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MCQOPTIONS
This section includes 15 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 compounds are required for the growth of saprophytic bacteria and fungi? |
| A. | organic compounds |
| B. | nitrates |
| C. | phosphates |
| D. | mercury |
| Answer» B. nitrates | |
| 2. |
The microorganisms from lakes and rivers can grow at a salt concentration of _________ |
| A. | 2.5 to 4 percent |
| B. | 5 percent |
| C. | below 1 percent |
| D. | above 1 percent |
| Answer» D. above 1 percent | |
| 3. |
The degree of salinity in freshwater is nearly zero. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Wells less than ___________ deep are considered to be shallow. |
| A. | 1 ft |
| B. | 100 ft |
| C. | 50 ft |
| D. | 1000 ft |
| Answer» C. 50 ft | |
| 5. |
The moisture contained in clouds and precipitated as snow,hail,rain etc constitutes _________________ |
| A. | Atmospheric water |
| B. | Surface water |
| C. | Groundwater |
| D. | Subterranean water |
| Answer» B. Surface water | |
| 6. |
THE_MICROORGANISMS_FROM_LAKES_AND_RIVERS_CAN_GROW_AT_A_SALT_CONCENTRATION_OF__________?$ |
| A. | 2.5 to 4 percent |
| B. | 5 percent |
| C. | below 1 percent |
| D. | above 1 percent |
| Answer» D. above 1 percent | |
| 7. |
Which of the following compounds are required for growth of saprophytic bacteria and fungi? |
| A. | organic compounds |
| B. | nitrates |
| C. | phosphates |
| D. | mercury |
| Answer» B. nitrates | |
| 8. |
The degree of salinity in freshwater is nearly zero? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Primary producers are found growing in which of the following layers of water? |
| A. | upper layer |
| B. | middle layer |
| C. | intermediate layer |
| D. | bottom layer |
| Answer» B. middle layer | |
| 10. |
Hydrostatic pressure increases the boiling point of water but does not change the solubility of nutrients. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Thermus aquaticus, a common bacterial inhabitant generally prevails in temperatures of ____________ |
| A. | 0<sup>0</sup> C |
| B. | 30-40<sup>0</sup>C |
| C. | 70-72<sup>0</sup>C |
| D. | 80-85<sup>0</sup>C |
| Answer» D. 80-85<sup>0</sup>C | |
| 12. |
Wells less than ___________ deep are considered to be shallow. |
| A. | 1 ft |
| B. | 100 ft |
| C. | 50 ft |
| D. | 1000 ft |
| Answer» C. 50 ft | |
| 13. |
Which of the following is subterranean water? |
| A. | Atmospheric water |
| B. | Surface water |
| C. | Groundwater |
| D. | Rainwater |
| Answer» D. Rainwater | |
| 14. |
The surface waters are susceptible to contamination with microorganisms from _______________ |
| A. | the air |
| B. | the surface runoff |
| C. | precipitation |
| D. | atmospheric water and the surface runoff |
| Answer» E. | |
| 15. |
The moisture contained in clouds and precipitated as snow,hail,rain etc constitutes _________________ |
| A. | Atmospheric water |
| B. | Surface water |
| C. | Groundwater |
| D. | Subterranean water |
| Answer» B. Surface water | |