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. |
What is function of E site on ribosomes? |
| A. | peptidyl tRNA binding site |
| B. | mRNA binding site |
| C. | aminoacyl-tRNA binding site |
| D. | exit site |
| Answer» E. | |
| 2. |
Which of following functions as a transporter of amino acids from cytoplasm to growing peptide chain? |
| A. | rRNA |
| B. | mRNA |
| C. | tRNA |
| D. | DNA |
| Answer» D. DNA | |
| 3. |
How many total numbers of tRNAs are there? |
| A. | 12 |
| B. | 35 |
| C. | 45 |
| D. | 68 |
| Answer» D. 68 | |
| 4. |
Which technology can be used to monitor thousands of genes in a single experiment? |
| A. | Centrifugation |
| B. | Polymerase chain reaction |
| C. | DNA microarrays |
| D. | RNA microarrays |
| Answer» D. RNA microarrays | |
| 5. |
What is function of P site on ribosomes? |
| A. | exit site |
| B. | aminoacyl-tRNA binding site |
| C. | mRNA cutting complex |
| D. | peptidyl tRNA binding site |
| Answer» E. | |
| 6. |
Which of the following are precursors for mRNAs? |
| A. | snoRNA |
| B. | hnRNA |
| C. | siRNA |
| D. | tRNA |
| Answer» C. siRNA | |
| 7. |
Core promoter is the site that stretches between _______________ |
| A. | TATA box and start site |
| B. | TATA box and stop site |
| C. | TATA box and operator |
| D. | TATA box and the promoter |
| Answer» B. TATA box and stop site | |
| 8. |
What percent of a typical Red blood cell is constituted by hemoglobin? |
| A. | 30 |
| B. | 50 |
| C. | 75 |
| D. | 95 |
| Answer» E. | |
| 9. |
How many domains are present in a transcription factor? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 10. |
Break down of translation assembly requires how many GTP molecules? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 11. |
MateRNAl substances in egg that influence course of early development are called |
| A. | embryonic determinants |
| B. | cytoplasmic determinant |
| C. | mateRNAl factors |
| D. | egg factors |
| Answer» C. mateRNAl factors | |
| 12. |
Shine-Dalgarno sequence is present in the ____________________ |
| A. | hnRNA |
| B. | mRNA |
| C. | tRNA |
| D. | siRNA |
| Answer» C. tRNA | |
| 13. |
At any given time, a typical human cell expresses what percentage of its protein-coding genes? |
| A. | 10 |
| B. | 20 |
| C. | 30 |
| D. | 40 |
| Answer» C. 30 | |
| 14. |
RNA is a mobile nucleic acid. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 15. |
Non-coding or intervening sequencing in pre mRNA transcript is called |
| A. | splice sites |
| B. | coding site |
| C. | exons |
| D. | introns |
| Answer» E. | |
| 16. |
What is function of end modifications of mRNA? |
| A. | protection from degradation |
| B. | help in translation |
| C. | help in further modifications |
| D. | save energy |
| Answer» B. help in translation | |
| 17. |
Which of following is not a part of translation initiator complex? |
| A. | small ribosomal subunit |
| B. | large ribosomal subunit |
| C. | DNA |
| D. | tRNA |
| Answer» D. tRNA | |
| 18. |
Which of following structure of a protein is sequence of amino acids? |
| A. | quateRNAry |
| B. | tertiary |
| C. | secondary |
| D. | primary |
| Answer» E. | |
| 19. |
Which proteolytic enzyme was used in the experiments aimed at elucidating the mutation that causes sickle cell anemia? |
| A. | papain |
| B. | rennin |
| C. | pepsin |
| D. | trypsin |
| Answer» E. | |
| 20. |
Discharged tRNAs leave ribosomes from which of following sites? |
| A. | a site |
| B. | p site |
| C. | e site |
| D. | r site |
| Answer» D. r site | |
| 21. |
Which part of the proteasome recognizes a polyubiquitinated protein? |
| A. | alpha-subunit |
| B. | beta-subunit |
| C. | gamma-subunit |
| D. | end caps |
| Answer» C. gamma-subunit | |
| 22. |
In the proteasome, the unfolded protein is threaded through narrow opening in the ring of ___________________ |
| A. | ligase |
| B. | sigma factor |
| C. | alpha-subunit |
| D. | beta-subunit |
| Answer» D. beta-subunit | |
| 23. |
For enzymatic degradation, Ubiquitin is transferred from the carrier protein to _______________ residue. |
| A. | arginine |
| B. | cytosine |
| C. | lysine |
| D. | alanine |
| Answer» D. alanine | |
| 24. |
During the process of cytoplasmic localization, translation is inhibited. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 25. |
How many types of RNA polymerase is present in prokaryotes? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 26. |
Which enzyme makes the transcription, an essentially irreversible process? |
| A. | pyrophosphatase |
| B. | amylase |
| C. | glucamylase |
| D. | topoisomerase |
| Answer» B. amylase | |
| 27. |
In a mammalian cell, which is the most abundant type of RNA? |
| A. | rRNA |
| B. | mRNA |
| C. | siRNA |
| D. | tRNA |
| Answer» B. mRNA | |
| 28. |
In a bacterial operon, which is located downstream of the structural genes? |
| A. | operator |
| B. | inducer |
| C. | promoter |
| D. | regulatory gene |
| Answer» E. | |
| 29. |
Which of the following majorly influences the activity of genes during early mammalian development? |
| A. | temperature changes |
| B. | homeostasis |
| C. | stimulation |
| D. | inheritance |
| Answer» E. | |
| 30. |
Which of following correctly states central dogma of life? |
| A. | DNA-RNA-protein |
| B. | RNA-DNA-protein |
| C. | protein-DNA-RNA |
| D. | DNA-protein |
| Answer» B. RNA-DNA-protein | |
| 31. |
Which of following is acquired by newly synthesized proteins of cell membrane? |
| A. | smaller peptides |
| B. | sugars |
| C. | tags |
| D. | complex carbohydrate chains |
| Answer» C. tags | |
| 32. |
Which of following is a site of transcription? |
| A. | endoplasmic reticulum |
| B. | nucleus |
| C. | ribosomes |
| D. | nucleolus |
| Answer» C. ribosomes | |
| 33. |
Ubiquitin is a ___________________ |
| A. | protein |
| B. | organelle |
| C. | nuclear body |
| D. | aggragated complex |
| Answer» B. organelle | |
| 34. |
P53 is an example of which of following? |
| A. | tumor suppressor genes |
| B. | cancer repressor genes |
| C. | proto oncogenes |
| D. | oncogenes |
| Answer» B. cancer repressor genes | |
| 35. |
From which scientist's work did jumping genes phenomenon first came to light? |
| A. | Watson |
| B. | mc clintok |
| C. | Gregory |
| D. | crick |
| Answer» C. Gregory | |
| 36. |
When was the first correlation between a chromosomal deletion and human disorder first developed? |
| A. | 1963 |
| B. | 1973 |
| C. | 1983 |
| D. | 1993 |
| Answer» B. 1973 | |
| 37. |
How many nucleotides long is primary transcript? |
| A. | 100000 |
| B. | 500 |
| C. | 27000 |
| D. | 2000 |
| Answer» D. 2000 | |
| 38. |
Information from DNA is transcribed into which of following? |
| A. | tRNA |
| B. | rRNA |
| C. | mRNA |
| D. | qRNA |
| Answer» D. qRNA | |
| 39. |
Rearrangement of exons due to intron crossing over is called |
| A. | exon shuffling |
| B. | recombination |
| C. | exon combination |
| D. | exon mix |
| Answer» B. recombination | |
| 40. |
Which of following are capable of self pairing with a complementary region in self strand? |
| A. | ribonucleic acid |
| B. | deoxy ribonucleic acid |
| C. | tRNA |
| D. | protein |
| Answer» B. deoxy ribonucleic acid | |
| 41. |
Which of following structures is site of translation? |
| A. | ribosomes |
| B. | endoplasmic reticulum |
| C. | cell membrane |
| D. | lysosomes |
| Answer» B. endoplasmic reticulum | |
| 42. |
Which of following disease caused by a point mutation in beta-globin chain of hemoglobin? |
| A. | hemophilia |
| B. | sickle cell anemia |
| C. | celiac disease |
| D. | diabetes |
| Answer» C. celiac disease | |
| 43. |
Which of following codons does not code for proline? |
| A. | CCU |
| B. | CCC |
| C. | CCA |
| D. | ACU |
| Answer» E. | |
| 44. |
FIRST-STATEMENT |
| A. | FIRST |
| B. | STATEMENT |
| C. | – |
| Answer» B. STATEMENT | |
| 45. |
Atoms are considered as S-expressions. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 46. |
If X and Y are S-expression then (X.Y) is a/an ____ |
| A. | S-expression |
| B. | Atom |
| C. | List |
| D. | Predicate |
| Answer» B. Atom | |
| 47. |
What are the basic building blocks of S-expressions? |
| A. | Atoms |
| B. | Lists |
| C. | Numbers |
| D. | Predicates |
| Answer» B. Lists | |
| 48. |
All program statements and data in LISP are represented by S-expressions? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 49. |
What S-expression consists of? |
| A. | Atoms and Lists |
| B. | Numeric only |
| C. | Literals only |
| D. | Atoms only |
| Answer» B. Numeric only | |