MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Life Sciences knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A purified DNA sample of leaf contains 20.0 mole of guanine. Calculate the approximate percentage of purine residues? |
| A. | 30% |
| B. | 40% |
| C. | 60% |
| D. | 20% |
| Answer» B. 40% | |
| 2. |
Which of these statements are INCORRECT according to chargaff s rules? |
| A. | The molar ratio of A to T or C to G = 1 |
| B. | The sum of purine = sum of pyrimidine |
| C. | The % C+G % A+T |
| D. | The composition of DNA remains the same in all the species |
| Answer» E. | |
| 3. |
Which of these statements are TRUE for a glycosidic bond? |
| A. | The bond between sugar and the nitrogenous base |
| B. | The bond between the two sugar residues |
| C. | The bond between sugar and phosphate |
| D. | The bond between base and phosphate |
| Answer» B. The bond between the two sugar residues | |