LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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deoxyribose and adenine
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deoxyribose and a hydrogen bond
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sugar and the nucleus
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deoxyribose (sugar) and phosphate
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Detailed explanation-1: -The structure of DNA is a double helix. In other words, it is a double stranded molecule that twists like a spiral staircase. The outsides of the molecule, the railings of the staircase, are made of deoxyribose sugars alternating with phosphates. This part of the molecule is sometimes called the “backbone ".
Detailed explanation-2: -A DNA molecule is “ladderlike” in shape. Deoxyribose and phosphoric acid molecules join to form the sides or uprights of the ladder.
Detailed explanation-3: -DNA, which stands for deoxyribonucleic acid, resembles a long, spiraling ladder. It consists of just a few kinds of atoms: carbon, hydrogen, oxygen, nitrogen, and phosphorus. Combinations of these atoms form the sugar-phosphate backbone of the DNA–the sides of the ladder, in other words.
Detailed explanation-4: -Answer and Explanation: The sides of DNA are made up of deoxyribose sugar molecules and phosphate molecules.