Ribosomes Objective Type Questions and Answers

Questions

21 All the following sites has ribosomes except

A Chloroplast

B Mitochondrion

C Cytoplasm

D Nucleus

View Answer

Answer: Nucleus

22 80 S ribosomes occur in

A Eukaryotic cells of animals and plants

B Both Eukaryotic cells and prokaryotic cells

C Eukaryotic cells of animals

D all of these

View Answer

Answer: Eukaryotic cells of animals and plants

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23 The subunits of 80S ribosome include

A 20S and 60S

B 40S and 60S

C 40S and 50S

D 30S and 50S

View Answer

Answer: 40S and 60S

24 The larger and smaller subunit of 70S ribosome is

A 20S and 50S

B 40S and 20S

C 50S and 30S

D 30S and 40S

View Answer

Answer: 50S and 30S

25 Which of the following ions are required for binding of ribosomal subunits

A Mn++

B Fe++

C Na+

D Mg++

View Answer

Answer: Mg++

26 70S ribosome occur in

A prokaryotes and eukaryotic plant cells

B viruses

C prokaryotes

D All of these

View Answer

Answer: All of these

27 Ribosomes are present in

A Prokaryotes only

B Eukaryotes only

C Eukaryotes, prokaryotes and viruses

D Eukaryotes and prokaryotes

View Answer

Answer: Eukaryotes and prokaryotes

28 In 70S ribosomes, ‘S’ stands for

A SI unit

B Svedberg unit

C Solubility factor

D None of these

View Answer

Answer: Svedberg unit

29 What is the proportion of rRNA and protein in prokaryotic cells?

A 2:1

B 2:2

C 1:1

D 1:2

View Answer

Answer: 2:1

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