MCQOPTIONS
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MCQOPTIONS
This section includes 5 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 bacteria can grow both as chemolithotrophs or as chemoorganotrophs? |
| A. | Nitrosomonas sp. |
| B. | Pseudomonas pseudoflava |
| C. | Rhodospirillum rubrum |
| D. | Chromatium okenii |
| Answer» C. Rhodospirillum rubrum | |
| 2. |
Which of the following are functions of water in the culture medium? |
| A. | nutrients must be in aqueous solution |
| B. | cofactor of enzymes |
| C. | provides resistance to sudden transient temperature changes |
| D. | it is a chemical reactant, nutrients must also be present in aqueous solution and provide resistance to sudden temperature changes |
| Answer» E. | |
| 3. |
Red extreme halophiles , are members of the archaebacterial which cannot grow with less than 12 to 15 percent NaCl. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which of the following is the nutritional characterization of Escherichia coli? |
| A. | Chemotrophic |
| B. | Organotrophic |
| C. | Autotrophic |
| D. | Chemotrophic, Organotrophic, Heterotrophic |
| Answer» E. | |
| 5. |
The organisms which can use reduced inorganic compounds as electron donors are known as _________ |
| A. | chemotrophs |
| B. | organotrophs |
| C. | lithotrophs |
| D. | phototrophs |
| Answer» D. phototrophs | |