Which of the following nucleic acids is present in an organism having 70 S ribosomes only? - BIOLOGY MCQ NEET 2019 2026 | ExamTest.live | ExamTest.live

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Which of the following nucleic acids is present in an organism having 70 S ribosomes only?

A $Single-stranded DNA with a protein coat$
B $Double-stranded circular naked DNA$
C $Double-stranded DNA enclosed in nuclear membrane$
D $Double-stranded circular DNA with histone proteins$

Solution & Step-by-step Explanation

Organisms having only 70 S ribosomes are prokaryotes (Bacteria and Archaea). The genetic material of prokaryotes is typically a double-stranded circular DNA that is "naked" (not associated with histones in bacteria) and not enclosed in a nuclear membrane.

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Which of the following nucleic acids is present in an organism having 70 S ribosomes only?

A

Single-stranded DNA with a protein coat

B

Double-stranded circular naked DNA

C

Double-stranded DNA enclosed in nuclear membrane

D

Double-stranded circular DNA with histone proteins

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cell biology prokaryotes genetic material

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