जॉइन Examsbookउत्तर : 3. "sugars and phosphates"
What are the sides of the dna ladder made of5
प्र: What are the sides of the dna ladder made of
- 1nitrates and sugarsfalse
- 2sugars and hydratesfalse
- 3sugars and phosphatestrue
- 4phosphates and nitratesfalse
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उत्तर : 3. "sugars and phosphates"
व्याख्या :
Answer: C) sugars and phosphates Explanation: DNA is a double-stranded molecule twisted into a helix. The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of alternating sugar and phosphate molecules. Deoxyribose, which is a pentose, and a phosphate group are the two molecules together form the two sides of the DNA. The rungs of the ladder are pairs of 4 types of nitrogen bases.