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Cytology MCQ

80 MCQ questions with answers and explanations · page 1 of 4

Test yourself▶ 25 question test▶ 50 question test

Q1. Which organelles in the cell, other than nucleus contains DNA ?

  1. ACentriole
  2. BGolgi apparatus
  3. CLysosomes
  4. DMitochondia
Show answer & explanation

Answer: D) Mitochondia

Q2. Which of the following features of DNA make if uniquely suited to store and transmit genetic information from generation to generation ?

  1. AComplementary of the two strand
  2. BDouble helix
  3. CNumber of base pairs per turn
  4. DSugar phosphate backbone
Show answer & explanation

Answer: A) Complementary of the two strand

Q3. Which of the following cell organelles play the most significant role in protein synthesis-

  1. ALysosome and centrosome
  2. BEndoplasmic reticulum and ribosome
  3. CGolgi apparatus and mitochondria
  4. DLysosome and mitochondria
Show answer & explanation

Answer: B) Endoplasmic reticulum and ribosome

Q4. Assertion (A) : Scientists can cut apart and paste together DNA molecules at will, regardless of the source of molecules.nReason (R) : DNA fragments can be mainpulated using restriction endonucleases and DNA ligases.

  1. ABoth A and R are true and R is the correct explanation of A
  2. BBoth A and R are true, but R is not a correct explanation of A
  3. CA is true, but R is false
  4. DA is false, but R is true
Show answer & explanation

Answer: A) Both A and R are true and R is the correct explanation of A

Q5. The cellular and molecular control of programed cell death is known as-

  1. AApoptosis
  2. BAgeing
  3. CDegeneration
  4. DNecrosis
Show answer & explanation

Answer: A) Apoptosis

Q6. With reference to the latest developments in stem cell research consider the following statements-n1. The only source of human stem cells are the embryos at blastocyst stage.n2. The stem cells can be derived without causing destruction to blastocysts.n3. The stem cells can regenerate themselves in vitro virtually forever.n4. Indian research centres also created a few cell lines which can be developed into many types of tissuenWhich of the statement are correct ?

  1. A1, 2 & 4
  2. B1 & 2
  3. C1, 2 & 3
  4. D3 & 4
Show answer & explanation

Answer: D) 3 & 4

Q7. What is plant cell wall mainly composed of ?

  1. ALipids
  2. BVitamin
  3. CCellulose
  4. DProtein
Show answer & explanation

Answer: C) Cellulose

Q8. Which among the following does not have a cell wall ?

  1. AEuglena
  2. BParamecium
  3. CGonyaulax
  4. DMycoplasma
Show answer & explanation

Answer: D) Mycoplasma

Q9. True nucleus is absent in-

  1. ABacteria
  2. BFungi
  3. CAlgae
  4. DLichens
Show answer & explanation

Answer: A) Bacteria

Q10. Barr body' is found in-

  1. ASperm
  2. BSertoli cells
  3. CFemale somatic cells
  4. DMale somatic cells
Show answer & explanation

Answer: C) Female somatic cells

Q11. In absence of ribosome in cell which of the following function does not takes place?

  1. ARespiration
  2. BExcretion
  3. CCarbohydrate synthesis
  4. DProtein synthesis
Show answer & explanation

Answer: D) Protein synthesis

Q12. The longest cell in human body is-

  1. ALiver cell
  2. BMuscles cell
  3. CNerve cell
  4. DNone of these
Show answer & explanation

Answer: C) Nerve cell

Q13. Nuclear envelope is absent in-

  1. AEucaryotic cell
  2. BBacteria
  3. CBoth eucaryotic and bacterial cell
  4. DNone of these
Show answer & explanation

Answer: D) None of these

Q14. Nucleoid is present in-

  1. AProcaryotes
  2. BProtozoa
  3. CGreen algae
  4. DNone of these
Show answer & explanation

Answer: A) Procaryotes

Q15. Cell theory was put forward by-

  1. ASchleiden and schwann
  2. BSulton and Boveri
  3. CWatson and Crick
  4. DDarwin and Wallace
Show answer & explanation

Answer: A) Schleiden and schwann

Q16. Nucleus was discovered by-

  1. ARobert Brown
  2. BLeeuwenhock
  3. CRobbert Hooke
  4. DSchleiden and Schwann
Show answer & explanation

Answer: A) Robert Brown

Q17. Which one of the following is known as power house of cell ?

  1. AGolgi bodies
  2. BNucleolus
  3. CMitochondrion
  4. DRibosomes
Show answer & explanation

Answer: C) Mitochondrion

Q18. Which one of following is largest cell organelles ?

  1. AChromosomes
  2. BMitochondria
  3. CPlastid
  4. DGolgibodies
Show answer & explanation

Answer: C) Plastid

Q19. The outermost covering of plant cell is-

  1. ACell membrane
  2. BCell wall
  3. CTonoplast
  4. DEndoplasmic reticulum
Show answer & explanation

Answer: B) Cell wall

Q20. Network of membranous irregular tubules found in cell cytoplasm is called-

  1. AGolgibodies
  2. BMitochondria
  3. CRibosomes
  4. DEndoplasmic reticulum
Show answer & explanation

Answer: D) Endoplasmic reticulum

Q21. Site of protein synthesis in a cell is-

  1. ALysosome
  2. BRibosomes
  3. CMitochondria
  4. DGolgibodies
Show answer & explanation

Answer: B) Ribosomes

Q22. The hydrophilic nature of DNA is due to the presence of-

  1. Aa number of hydrogen bonds
  2. Bphosphate group
  3. Cdeoxyribose sugar
  4. Dthymine base
Show answer & explanation

Answer: B) phosphate group

Q23. Site of cellular respiration is-

  1. AGolgibodies
  2. BMitochondria
  3. CRibosomes
  4. DLysosome
Show answer & explanation

Answer: B) Mitochondria

Q24. Lysosome is formed from which of the following cell organelles ?

  1. ANucleus
  2. BEndoplasmic reticulum
  3. CGolgi bodies
  4. DRibosomes
Show answer & explanation

Answer: C) Golgi bodies

Q25. Attractive colour of flower and seed is due to-

  1. ALeucoplast
  2. BChromoplast
  3. CChloroplast
  4. DTonoplast
Show answer & explanation

Answer: B) Chromoplast

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