Ribosomes Quiz | Ribosomes Objective Type Questions and Answers

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Questions
21 All the following sites has ribosomes except
A Chloroplast
B Mitochondrion
C Cytoplasm
D Nucleus

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

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

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

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++

Answer: Mg++
26 70S ribosome occur in
A prokaryotes and eukaryotic plant cells
B viruses
C prokaryotes
D All of these

Answer: All of these
27 Ribosomes are present in
A Prokaryotes only
B Eukaryotes only
C Eukaryotes, prokaryotes and viruses
D Eukaryotes and prokaryotes

Answer: Eukaryotes and prokaryotes
28 In 70S ribosomes, ‘S’ stands for
A SI unit
B Svedberg unit
C Solubility factor
D None of these

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

Answer: 2:1

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