MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Long interspersed elements are about ____________ |
| A. | 100 to 300 bp long |
| B. | 200 to 400 bp long |
| C. | 10 to 100 bp long |
| D. | 6000 to 8000 bp long |
| Answer» E. | |
| 2. |
Short interspersed elements are about ____________ |
| A. | 100 to 300 bp long |
| B. | 200 to 400 bp long |
| C. | 10 to 100 bp long |
| D. | 6000 to 8000 bp long |
| Answer» B. 200 to 400 bp long | |
| 3. |
Which out of the following statements is true about the human genome? |
| A. | The human genome is believed to contain approximately 50,000 protein coding genes |
| B. | All non-protein coding sequences in the genome are believed to be non-functional DNA |
| C. | About 1.6% of the human genome encodes protein sequences |
| D. | Intros are the sections of protein coding genes that actually encode amino acid sequences |
| Answer» D. Intros are the sections of protein coding genes that actually encode amino acid sequences | |
| 4. |
The extra chromosomal, self-replicating, double stranded, closed, circular DNA molecules are called ____________ |
| A. | Viruses |
| B. | Phages |
| C. | Chloroplasts |
| D. | Plasmids |
| Answer» E. | |
| 5. |
How many autosomes are there in humans? |
| A. | 21 pairs |
| B. | 44 |
| C. | 46 |
| D. | 48 |
| Answer» C. 46 | |
| 6. |
The lowest level of chromosome organization is _______________ |
| A. | Nucleosome |
| B. | Solenoid |
| C. | 30nm fiber |
| D. | None of these |
| Answer» B. Solenoid | |
| 7. |
SHORT_INTERSPERSED_ELEMENTS_ARE_ABOUT?$ |
| A. | 100 to 300 bp long |
| B. | 200 to 400 bp long |
| C. | 10 to 100 bp long |
| D. | 6000 to 8000 bp long |
| Answer» B. 200 to 400 bp long | |
| 8. |
Long interspersed elements are about$ |
| A. | 100 to 300 bp long |
| B. | 200 to 400 bp long |
| C. | 10 to 100 bp long |
| D. | 6000 to 8000 bp long |
| Answer» E. | |
| 9. |
About what proportion of mitochondrial proteins are encoded by nuclear DNA? |
| A. | More than 95% |
| B. | 50% |
| C. | 1% |
| D. | 1.5% |
| Answer» B. 50% | |
| 10. |
Which of the two organelles contain their own DNA and ribosomes? |
| A. | Mitochondria and chloroplast |
| B. | Endoplasmic reticulum and mitochondria |
| C. | Golgi complex and mitochondria |
| D. | Lysosomes and mitochondria |
| Answer» B. Endoplasmic reticulum and mitochondria | |
| 11. |
Which of the following is false about introns? |
| A. | They are non-protein coding genes |
| B. | They are protein coding genes |
| C. | They are removed by splicing |
| D. | Integral to gene expression regulation |
| Answer» C. They are removed by splicing | |
| 12. |
The extra chromosomal, self-replicating, double stranded, closed, circular DNA molecules are called |
| A. | Viruses |
| B. | Phages |
| C. | Chloroplasts |
| D. | Plasmids |
| Answer» E. | |
| 13. |
What proportion of the human genome is made up of repetitive DNA sequences? |
| A. | 15% |
| B. | 1% |
| C. | 90% |
| D. | 50% |
| Answer» E. | |
| 14. |
Number of autosomes in humans is |
| A. | 21 pairs |
| B. | 44 |
| C. | 46 |
| D. | 48 |
| Answer» C. 46 | |
| 15. |
The lowest level of chromosome organization is |
| A. | Nucleosome |
| B. | Solenoid |
| C. | 30nm fiber |
| D. | None of these |
| Answer» B. Solenoid | |