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Last Updated On [03-11-2023]

Ribosomes that occur exclusively in mitochondria is

a)

70 S

b)

55 S

c)

30 S

d)

50 S


Question ID - 2565 :-

Ribosomes that occur exclusively in mitochondria is

a)

70 S

b)

55 S

c)

30 S

d)

50 S

1 Answer
5876 Votes
3537

Answer Key : (b) -

(b)

Besides DNA, a mitochondrion has RNA and its ribosomes also. Thus, a complete protein synthesising machinery is present in mitochondria. The ribosomes of mitochondria are small,  55-60 S type, with a large subunit of 40 S and a small subunit of 30 S. The large subunit contain 16-17 S and 5S RNA and the small subunit 12-13 S RNA.



Next Question :

Number of protofilament in microtubule is

a)

13

b)

12

c)

5

d)

10


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