MCQOPTIONS
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MCQOPTIONS
This section includes 175 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Pseudogenes are _______________ |
| A. | non-functional |
| B. | non-existent |
| C. | existent in plants only |
| D. | cannot be sequenced |
| Answer» B. non-existent | |
| 2. |
A person who has dominant phenotype but can transmit recessive gene to his offspring is called |
| A. | transmitter |
| B. | phenotypically silent |
| C. | recessive |
| D. | a carrier |
| Answer» E. | |
| 3. |
The globin gene is constructed from _____ exons and _______ introns. |
| A. | 3, 2 |
| B. | 2, 3 |
| C. | 2, 2 |
| D. | 3, 3 |
| Answer» B. 2, 3 | |
| 4. |
After first cross, if F1 generation looks exactly like one of parents, it means that inherited gene shows |
| A. | semi dominance |
| B. | total dominance |
| C. | multi dominance |
| D. | complete dominance |
| Answer» E. | |
| 5. |
The helical nature of DNA was revealed by the work of ______________ |
| A. | Rosalind Franklin |
| B. | Francis Crick |
| C. | Louis Pasteur |
| D. | Frederick Sanger |
| Answer» B. Francis Crick | |
| 6. |
Systems biology is the study of Biological systems in humans. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 7. |
Tay Sach's disease is more common in which of following ethnicities? |
| A. | Mediterranean |
| B. | Jewish |
| C. | Asian |
| D. | black |
| Answer» C. Asian | |
| 8. |
Which of following traits is denoted by small alphabets? |
| A. | dominant |
| B. | recessive |
| C. | absent |
| D. | hidden |
| Answer» C. absent | |
| 9. |
Variants of a heritable character are called |
| A. | trait |
| B. | feature |
| C. | character |
| D. | attribute |
| Answer» B. feature | |
| 10. |
Which of following traits is denoted by capital letters? |
| A. | recessive |
| B. | absent |
| C. | dominant |
| D. | hidden |
| Answer» D. hidden | |
| 11. |
Huntington's disease affects 1 in how many people of United States? |
| A. | 10000 |
| B. | 1000 |
| C. | 500 |
| D. | 90000 |
| Answer» B. 1000 | |
| 12. |
Amniotic fluid helps in detecting Tay Sach's in which week? |
| A. | 3 |
| B. | 4 |
| C. | 13 |
| D. | 5 |
| Answer» D. 5 | |
| 13. |
Which of following is a representation of hybrid offspring of parent plants? |
| A. | F1 |
| B. | F2 |
| C. | p |
| D. | a |
| Answer» B. F2 | |
| 14. |
A nucleotide has a non-polarized structure. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 15. |
Which of following is not an example of a human blood type? |
| A. | b |
| B. | a |
| C. | c |
| D. | ab |
| Answer» D. ab | |
| 16. |
Whole genome duplication is termed as __________________ |
| A. | aneuploidy |
| B. | polyploidization |
| C. | polyploidy |
| D. | polymorphism |
| Answer» C. polyploidy | |
| 17. |
Plants that were heterozygous for two different characters are termed as |
| A. | Multiploid |
| B. | diploid |
| C. | dihybrid |
| D. | Heteroploid |
| Answer» D. Heteroploid | |
| 18. |
Nucleotide, basic unit of DNA consists of the sugar _________________ |
| A. | deoxyribose |
| B. | oxyribose |
| C. | mannose |
| D. | fructose |
| Answer» B. oxyribose | |
| 19. |
Presence of sickle cell anemia lowers incidence rate of which of following diseases? |
| A. | small pox |
| B. | chicken pox |
| C. | malaria |
| D. | polio |
| Answer» D. polio | |
| 20. |
Higher the concentration of GC content, lower the Tₘ. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 21. |
Chorionic villus sampling is done by taking a sample of tissue from which of following? |
| A. | uterus |
| B. | amniotic fluid |
| C. | embryo |
| D. | placenta |
| Answer» E. | |
| 22. |
A gene that has a pair of identical alleles is said to be |
| A. | homozygous |
| B. | heterozygous |
| C. | Subgene |
| D. | homologs |
| Answer» B. heterozygous | |
| 23. |
Allele for achondroplasia is |
| A. | recessive |
| B. | dominant |
| C. | silent |
| D. | common |
| Answer» C. silent | |
| 24. |
Mendel identified second law of inheritance by following how many characteristics? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 25. |
The phosphate molecules present on the DNA strand give it a large positive charge. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 26. |
In situ hybridization was aimed at determining the location of _______ |
| A. | satellite DNA |
| B. | nucleus |
| C. | mitochondria |
| D. | autosomes |
| Answer» B. nucleus | |
| 27. |
Supercoiled DNA is more compact than its relaxed counterpart and therefore __________ |
| A. | has lower pH value |
| B. | sediments faster |
| C. | sediments slower |
| D. | denatures quickly |
| Answer» C. sediments slower | |
| 28. |
Technique in which a needle-thin tube containing a viewing scope and fiber optics is inserted into uterus is called |
| A. | chorionic villus sampling |
| B. | amniotic testing |
| C. | Fetoscopy |
| D. | amniocentesis |
| Answer» D. amniocentesis | |
| 29. |
Plants that have been inbred for many generations and have same characters as their parents are called |
| A. | pure breeding |
| B. | non breeding |
| C. | self breeding |
| D. | true breeding |
| Answer» E. | |
| 30. |
Which of following is an example of a multifactorial disease? |
| A. | cancer |
| B. | malaria |
| C. | polio |
| D. | alzheimer's disease |
| Answer» B. malaria | |
| 31. |
Alu sequences are ________________ |
| A. | dna transposons |
| B. | retrotransposons |
| C. | viral elements |
| D. | pseudogenes |
| Answer» C. viral elements | |
| 32. |
Which of following is most common disease amongst people of African descent? |
| A. | sickle cell anemia |
| B. | cancer |
| C. | Tay Sach's |
| D. | parkinson's disease |
| Answer» B. cancer | |
| 33. |
Which of following is true for a Widow's peak? |
| A. | recessive trait |
| B. | dominant trait |
| C. | universal trait |
| D. | silent trait |
| Answer» C. universal trait | |
| 34. |
When phenotypic effect of a gene disrupts effect of a gene at another locus, it is called as |
| A. | metastasis |
| B. | epistasis |
| C. | pleiotropy |
| D. | Polytropy |
| Answer» C. pleiotropy | |
| 35. |
Which kinds of forces stabilize the DNA structure? |
| A. | hydrophilic, covalent |
| B. | hydrophobic, covalent |
| C. | hydrophobic, van der Waals |
| D. | hydrophilic, van der Waals |
| Answer» D. hydrophilic, van der Waals | |
| 36. |
Pollen-producing organ of a flower is called |
| A. | stamen |
| B. | carpel |
| C. | pistil |
| D. | petal |
| Answer» B. carpel | |
| 37. |
Who suggested that DNA composed of three nucleotide strands? |
| A. | Linus Pauling |
| B. | Rosalind Franklin |
| C. | Maurice Wilkins |
| D. | James Watson |
| Answer» B. Rosalind Franklin | |
| 38. |
When phenotypic outcome of a gene is affected by both genetic and environmental factors, it is said to be |
| A. | polyfactorial |
| B. | multifactorial |
| C. | Polytropy |
| D. | pleiotropy |
| Answer» C. Polytropy | |
| 39. |
Egg-bearing organ of a flower is called |
| A. | carpel |
| B. | stamen |
| C. | petal |
| D. | pistil |
| Answer» B. stamen | |
| 40. |
What are alteRNAtive versions of a gene called? |
| A. | Subgenes |
| B. | alleles |
| C. | sub alleles |
| D. | Allogenes |
| Answer» C. sub alleles | |
| 41. |
“Dark matter” is the region of the chromosome that constitutes highly repeated sequences. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 42. |
Intergenic and intronic DNA are essentially same. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 43. |
Who was the first person to suggest that genes were capable of moving around the genome? |
| A. | James Watson |
| B. | Barbara McClintock |
| C. | Louis Pasteur |
| D. | Gregor Mendel |
| Answer» C. Louis Pasteur | |
| 44. |
Which of following refers to consanguineous marriage? |
| A. | cousins |
| B. | siblings |
| C. | friends |
| D. | Jews |
| Answer» B. siblings | |
| 45. |
Which of following gets lower in levels in a sickle cell anemia patient? |
| A. | carbon |
| B. | nitrogen |
| C. | carbon dioxide |
| D. | oxygen |
| Answer» E. | |
| 46. |
Guanine and adenine are _______________ |
| A. | purines |
| B. | pyrimidines |
| C. | nucleosides |
| D. | gangliosides |
| Answer» B. pyrimidines | |
| 47. |
Amphioxus is a _____________________ |
| A. | cell organelle |
| B. | marine animal |
| C. | marine plant |
| D. | reptile |
| Answer» C. marine plant | |
| 48. |
DNA renaturation was first realized in the year ___________ |
| A. | 1940 |
| B. | 1950 |
| C. | 1960 |
| D. | 1970 |
| Answer» D. 1970 | |
| 49. |
If left untreated, cystic fibrosis can cause death of children by which age? |
| A. | 3 |
| B. | 5 |
| C. | 9 |
| D. | 10 |
| Answer» C. 9 | |
| 50. |
The FOXP2 gene is responsible for _________________ |
| A. | hearing |
| B. | sensation |
| C. | speech |
| D. | intellect |
| Answer» D. intellect | |