MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the typical distance between two base pairs in nm? |
| A. | 0.34 nm |
| B. | 0.32 nm |
| C. | 0.33 nm |
| D. | 0.35 nm |
| Answer» B. 0.32 nm | |
| 2. |
What are the additional set of proteins which are required for the packaging of chromatin at the higher levels known as? |
| A. | Histone proteins |
| B. | Non-Histone proteins |
| C. | Histone chromosomal proteins |
| D. | Non-Histone chromosomal proteins |
| Answer» E. | |
| 3. |
Which of the following chromatins are said to be transcriptionally active and inactive respectively? |
| A. | Euchromatin, Heterochromatin |
| B. | Euchromatin, Prochromatin |
| C. | Prochromatin, Euchromatin |
| D. | Heterochromatin, Euchromatin |
| Answer» B. Euchromatin, Prochromatin | |
| 4. |
How many nucleosomes are present in a mammalian cell? |
| A. | 20 million |
| B. | 30 million |
| C. | 40 million |
| D. | 10 million |
| Answer» C. 40 million | |
| 5. |
When the negatively charged DNA combines with the positively charged histone octamer, which of the following is formed? |
| A. | Nucleus |
| B. | Nucleoid |
| C. | Nucleosome |
| D. | Nucleosome |
| Answer» D. Nucleosome | |
| 6. |
How many bp are present in a typical nucleosome? |
| A. | 200 bp |
| B. | 100 bp |
| C. | 300 bp |
| D. | 90 bp |
| Answer» B. 100 bp | |
| 7. |
What are the thread-like stained structures present in the nucleus known as? |
| A. | Chromosome |
| B. | Chromatid |
| C. | Chromatin |
| D. | Chloroplast |
| Answer» D. Chloroplast | |
| 8. |
What are the set of positively charged basic proteins called as? |
| A. | Histidine |
| B. | DNA |
| C. | RNA |
| D. | Histones |
| Answer» E. | |
| 9. |
The DNA of the E. coli is scattered throughout the cell. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
What is the length of the DNA double helix, if the total number of bp (base pair) is 6.6 x 109? |
| A. | 2.2 m/bp |
| B. | 2.5 m/bp |
| C. | 2.2 m |
| D. | 2.5 m |
| Answer» D. 2.5 m | |