MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Radioisotopes are frequently used in the study of cells. Assume a culture of E. coli is grown in a culture medium containing radioactive sulphur. At the end of 48 hours, it is expected to find the radioactive label located in |
| A. | DNA |
| B. | enzymes |
| C. | RNA |
| D. | all of these |
| Answer» C. RNA | |
| 2. |
Radioisotopes are frequently used in the study of cells. Assume a culture of E. coli is grown in a culture medium containing radioactive phosphorous. At the end of 48 hours, it is expected to find the radioactive label located in |
| A. | enzymes |
| B. | RNA |
| C. | phospholipids |
| D. | all of these |
| Answer» E. | |
| 3. |
The phosphate inhibition in the clavine formation with Claviceps SD58, can be counteracted by the addition of |
| A. | alanine |
| B. | methionine |
| C. | tryptophan |
| D. | lysine |
| Answer» D. lysine | |
| 4. |
Chemoautotrophs can survive on ______alone. |
| A. | minerals |
| B. | CO2 |
| C. | minerals and CO2 |
| D. | methane |
| Answer» D. methane | |
| 5. |
A product or products of glycolysis is/are |
| A. | ATP |
| B. | H2O |
| C. | CO2 |
| D. | both a and b |
| Answer» E. | |
| 6. |
Assimilatory sulfate reduction involves the nucleotide __________ during the incorporation of H2S in the production of __________ . |
| A. | ATP; methionine |
| B. | ATP; cytosine |
| C. | UTP; cytosine |
| D. | GTP; cytosine |
| Answer» C. UTP; cytosine | |