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Nucleus

Which of the ...

Question

Which of the following statements is/are incorrect?

(a) The ribosomes of primitive nucleus organisms are of 80S type.
(b) Ribosomes are located on the surface of SER.
(c) A cow consists of 80S ribosomes.
(d) Size of chromosomes depend on the size of nucleus.

A

a and c

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B

b and d

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C

a and b

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D

c and d

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Solution

The correct option is D
c and d

The ribosomes of primitive nucleus organisms are of 80S type. Thus, cows would not have 80S ribosomes. Moreover, the size of chromosome is independent of the size of nucleus.

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Similar questions

Q. Which of the following characteristics is common to both chromosomes and ribosomes in eukaryotic cells?

I. They consist of nucleic acid.
II. They consist of protein.
III. They are in the nucleus.

Q. Choose the correct statement(s):
(i) Ribosomes are located on the chromosomes.
(ii) Cell is located in the nucleus.
(iii) Chloroplasts are located in the nucleolus.
(iv) Cell membrane surrounds the cell.

Q. Select the correct option stating true(T) and flase(f) W.r.t ribosomes
(A) protein synthesis in eukaryotic cell occurs in the ribosomes of nucleus.
(B) Ribosomes are the granular structure first observed under the electron microscope.
(C) The sedimentation coefficient is indirect measure of density and size.

Q. Question 15
The thread-like structures present in the nucleus are

(a) nucleolus
(b) chromosomes
(c) genes
(d) ribosomes

Q. Which of the following statement(s) is/are correct?.
i) Ribosomes are called ‘protein factories’ of the cell.
ii) Ribosomes consist of three different proteins.
iii) During translation, the ribosome contains only one of the two subunits.

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