MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following involves carrying genetic information from DNA for protein synthesis? |
| A. | m-RNA |
| B. | t-RNA |
| C. | r-RNA |
| D. | sn-RNA |
| Answer» B. t-RNA | |
| 2. |
Which of the following nucleotides is not present in DNA? |
| A. | AMP |
| B. | GMP |
| C. | CMP |
| D. | UMP |
| Answer» E. | |
| 3. |
DNA denaturation is measured by absorbance at ___________ |
| A. | 220nm |
| B. | 230nm |
| C. | 250nm |
| D. | 260nm |
| Answer» E. | |
| 4. |
WHICH_OF_THE_FOLLOWING_IS_FALSE??$ |
| A. | RNA does not obey Chargaff’s rule |
| B. | DNAs can be identified by Orcinol color reaction |
| C. | In RNA OH group is present at 2’ position |
| D. | Alkali hydrolyses RNA to 2’3’-cyclic diesters |
| Answer» C. In RNA OH group is present at 2‚Äö√Ñ√∂‚àö√ë‚àö¬• position | |
| 5. |
Which_of_the_following_involves_in_carrying_genetic_information_from_DNA_for_protein_synthesis?$ |
| A. | m-RNA |
| B. | t-RNA |
| C. | r-RNA |
| D. | sn-RNA |
| Answer» B. t-RNA | |
| 6. |
Which of the following nucleotides is not present in RNA? |
| A. | AMP |
| B. | GMP |
| C. | CMP |
| D. | TMP |
| Answer» E. | |
| 7. |
Which of the following is false about denaturation? |
| A. | Disruption of hydrogen bonds |
| B. | Disruption of phosphodiester linkage |
| C. | Loss of helical structure of DNA |
| D. | It is resulted as a result of change in pH or increase in temperature |
| Answer» C. Loss of helical structure of DNA | |
| 8. |
DNA denaturation is measured by absorbance at |
| A. | 220nm |
| B. | 230nm |
| C. | 250nm |
| D. | 260nm |
| Answer» E. | |
| 9. |
Which of the following is true about tm? |
| A. | It can be termed as renaturation temperature |
| B. | The higher the content of G ≡ C base pairs, the higher the tm |
| C. | The higher the content of A = T base pairs, the higher the tm |
| D. | The higher the content of G ≡ C base pairs, the lower the tm |
| Answer» C. The higher the content of A = T base pairs, the higher the tm | |
| 10. |
What happens in hyperchromicity? |
| A. | When DNA is in bound form, there is decrease in absorption of UV light |
| B. | When DNA is in bound form, there is increase in absorption of UV light |
| C. | When DNA is in unbound form, it is more stable |
| D. | When DNA is in unbound form, there is increase in absorption of UV light |
| Answer» E. | |
| 11. |
What happens in hypochromicity? |
| A. | When DNA is in bound form, there is decrease in absorption of UV light |
| B. | When DNA is in bound form, there is increase in absorption of UV light |
| C. | When DNA is in unbound form, it is more stable |
| D. | When DNA is in unbound form, there is decrease in absorption of UV light |
| Answer» B. When DNA is in bound form, there is increase in absorption of UV light | |