MCQs on Ribosomes Short Questions and Answers

MCQs on Ribosomes Short Questions and Answers

Ribosome, A Cell Organelle- Definition


Ribosome is one of the cell organelles. It  is non-membranous bound structures. Ribosomes are the sites where the cell synthesizes proteins according to genetic instructions.

Course Content:

  • Chemical Composition
  • Types of Ribosomes
  • Structure of Ribosomes
  • Functions of Ribosomes

All of these Zoology MCQs are preferably for test / interview preparation for BSc, MSc, BS (Hons), NTS, FPSC, PPSC, PTS, CSS and all other competitive examination for foreign study including overseas students.

Read More: MCQs on Movement Across Membranes Questions and Answers


Ribosome, A Cell Organelle MCQs (Questions and Answers)


Q1. Ribosomes are __________structures.

  1. membrane bound
  2. non-membrane bound
  3. rigid
  4. tubular

Answer: b

Q2. Cells that have high protein synthesis have a particularly great number of_________. 

  1. lysosomes
  2. chromosomes
  3. ribosomes
  4. nucleoli

Answer: c

Q3. Which cell component is needed for cells who are active in protein synthesis?

  1. Nucleus
  2. Lysosomes
  3. Cytosole
  4. Nucleoli

Answer:  d

Q4.What is the function of nucleoli?

  1. Synthesize proteins
  2. Synthesize ribosomes
  3. Synthesize chromosomes
  4. Synthesize lysosomes

Answer: b

Q5. In which cellular component,  the cell synthesized proteins?

  1. Ribosomes
  2. Mitochondria
  3. Nucleus
  4. Cytoplasm

Answer: a

Q6. Ribosomes are also known as ribonucleoprotein because they contain equal amount of proteins and rRNA.        True/false

Answer: True

Q7. How many types of ribosomes are there?

  1. 4
  2. 2
  3. 1
  4. 3

Answer: b

Q8. Which type of ribosomes is suspended in the cytoplasm?

  1. Free ribosomes
  2. Bound ribosomes
  3. Both
  4. None

Answer: a

Q9. Where the free ribosomes synthesized proteins?

  1. Cytoplasm
  2. Centriole
  3. Nucleus
  4. Cytosol

Answer: d

Q10. Which type of ribosome is attached to the outside of the endoplasmic reticulum?

  1. Free ribosomes
  2. Bound ribosomes
  3. Both
  4. None

Answer: b

Q11. The proteins of bound ribosomes are stored in the inclusion of membranes.           True/False

Answer: True

Q12. Where the ribosomal subunits are constructed from RNA in eukaryotes?

  1. Nucleus
  2. Cytoplasm
  3. Nucleolus
  4. Mitochondria

Answer: c

Q13. Where the rRNA is produced?

  1. Nucleus
  2. Nucleolus
  3. Cytoplasm
  4. Endoplasmic Reticulum

Answer: a

Q14. Some cells specialize in protein secretion like pancreas and other glands have a high proportion of free ribosomes.        True/False

Answer: False(bound ribosomes)

Q15. Bound and free ribosomes are structurally identical and interchangeable.      True/False

Answer: True

Q16. How many subunits that each ribosome has?

  1. 1
  2. 2
  3. 3
  4. 4

Answer: b

Q17. The subunits join to form functional ribosomes.        True/False

Answer: True

Q18. Which cell organelle plays a key role in translating the genetic message?

  1. Nucleus
  2. Mitochondria
  3. Golgi Apparatus
  4. Ribosomes

Answer: d

Q19. The ribosomes of prokaryotes are smaller than eukaryotes..    True/False

Answer: True 

Q20. Which RNA carried the genetic message?

  1. rRNA
  2. tRNA
  3. mRNA
  4. All of the above

Answer: c

Q21. The genetic message is translated in the nucleus.      True/False

Answer: False(ribosomes)

Q22. From where the genetic message is carried by the mRNA?

  1. Nucleus
  2. Cytoplasm
  3. Nucleolus
  4. Chromosomes

Answer: a

Q23. Where the genetic message is send,  carried by the mRNA from the nucleus?

  1. Mitochondria
  2. Lysosomes
  3. Golgi Apparatus
  4. Cytoplasm

Answer: d

Q24. The genetic message when translated in the ribosomes,  forms specific primary structure (amino acid sequence) of a polypeptide chain .    True/False

Answer: True

Q25. The ribosomes of prokaryotes and eukaryotes are similar in their molecular composition..     True/False

Answer: False(different)

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