Microbiology Practice Test 7

1. The international unit of penicillin is defined by how much amount of International Standard?

2. Which of the following organisms are known to grow on the surfaces of freshly exposed rocks?

3. Which of the following is effective in the control of tuberculosis in humans?

4. How much time does nitrifying bacteria require to grow at an incubation of 250 to 300 C?

5. Which of the following product is not obtained from dissimilation of organic matter under aerobic conditions?

6. Rapidly expanding urbanization makes it difficult to generalize upon typical microbial flora of streams.

7. Agrobacterium is involved in which of the following processes?

8. Which of the following has its antiviral action attributed to the interference of protein synthesis?

9. Microbial inhabitants of the bottom region of a body of water are referred to as ________________

10. Which among the following factors are limiting the growth of phytoplankton organisms?