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Standard XII

Biology

Ribosomes of Eukaryotic Cell

Ribosomes are...

Question

Ribosomes are particles about 200 $˚ A$ units in diameter consisting of protein and RNA. The percentage of protein and RNA is respectively

80 %

and

20 %

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60 %

and

40 %

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50 %

and

50 %

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40 %

and

60 %

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Solution

The correct option is C $40 %$ and $60 %$
Ribosomes are particles about 200 $˚ A$ in diameter consisting of protein and ribosomal RNA.
In prokaryotes, ribosomes are roughly $40 %$ proteins and $60 %$ rRNA. In eukaryotes, ribosomes are made up of $40 %$ rRNA and $80 %$ proteins respectively.
So, the correct option is D.

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Similar questions

Q. The marks obtained by 40 students of a class are given below :

80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90,

50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60

, and

60

Construct a frequency distribution table.

The marks obtained by $40$ students of a class are given below :
$80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70,$
$10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90,$ $50, 80,$
$60, 70, 40, 50, 60, 90, 60, 40, 40, 60$ , and $60$

How many numbers are less than

35

Q. The marks obtained by 40 students of a class are given below :

80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80,

90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60

, and

60

How many students obtained marks below

40

Prokaryotes have 70S ribosomes. It breaks up into two sub units whose sedimentation constants are:

In the given figure, $∠ A = 60^{\circ}$ and $∠ A B C = 80^{\circ}$ , then $∠ D P C$ and $∠ B Q C$ are respectively ___.

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Ribosomes are particles about 200 ˚A units in diameter consisting of protein and RNA. The percentage of protein and RNA is respectively

The correct option is C 40% and 60%Ribosomes are particles about 200 ˚A in diameter consisting of protein and ribosomal RNA. In prokaryotes, ribosomes are roughly40% proteins and 60% rRNA. In eukaryotes, ribosomes are made up of40% rRNA and 80% proteins respectively. So, the correct option is D.

Ribosomes are particles about 200 $˚ A$ units in diameter consisting of protein and RNA. The percentage of protein and RNA is respectively