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Question

Consider the following four statements (a-6) and H._ select the option which includes all the correct ones only:-
(a) Ribosomes are the granular structure first observed by George Palade.
(b) Both the centrioles in a centrosome lie perpendicular to each other.
(c) A single human cell has approximately 2.2 meter long thread of DNA distributed in one chromosomes.
(d) Material of the nucleus (chromatin) stained by the only acidic dyes.

A
a, b and c
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B
a , c and d
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C
a and b
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D
a, b and d
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Solution

The correct option is C a and b
A single human cell has approximately 2.2-meter long thread of DNA distributed in all 46 ( not one ) chromosomes.
Material of the nucleus ( chromatin ) is stained by basic dyes.
Hence, statement (c) and (d) are incorrect.
So, the correct option is 'a and b'.

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