डीएनए (DNA) में कौन सी शर्करा उपस्थित होती है? | Agrigyan

Q.115

ICAR AIEEA PG 2024 - Physical Science

MCQ (Single Correct) +4 −1

Which sugar is present in DNA?

डीएनए (DNA) में कौन सी शर्करा उपस्थित होती है?

Ribose राइबोज Arabinose एराबिनोज Deoxyribose डीऑक्सीराइबोज Correct Glucose ग्लूकोज

In nucleic acids:
DNA (Deoxyribonucleic acid) contains the 5-carbon aldopentose sugar 2'-deoxy-D-ribose ($\text{C}_5\text{H}_{10}\text{O}_4$), which lacks an oxygen atom at the 2' carbon position.
RNA (Ribonucleic acid) contains D-ribose ($\text{C}_5\text{H}_{10}\text{O}_5$), which has a hydroxyl group ($-OH$) at the 2' carbon.

Therefore, the pentose sugar in DNA is Deoxyribose (Option 3).

न्यूक्लिक अम्लों में उपस्थित पेंटोज शर्कराएं:
डीएनए (DNA / Deoxyribonucleic acid) में 2'-डीऑक्सी-D-राइबोज (Deoxyribose, $\text{C}_5\text{H}_{10}\text{O}_4$) नामक 5-कार्बन पेंटोज शर्करा होती है, जिसके 2' कार्बन पर एक ऑक्सीजन परमाणु अनुपस्थित (केवल $-H$) होता है।
आरएनए (RNA) में D-राइबोज शर्करा होती है जिसके 2' कार्बन पर $-OH$ समूह उपस्थित होता है।

अतः डीएनए में डीऑक्सीराइबोज शर्करा पाई जाती है (विकल्प 3)।

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