1. What is the composition of a DNA molecule?
a. DNA is composed of pentose sugar, phosphate group and nitrogenous bases b. DNA is composed of ribose sugar, phosphate group and nitrogenous bases c. DNA is composed of sugar, hydrogen group and nitrogenous bases.
d. DNA is composed of nucleic acid, phosphate group and nitrogenous bases.
a. DNA is composed of pentose sugar, phosphate group and nitrogenous bases b. DNA is composed of ribose sugar, phosphate group and nitrogenous bases c. DNA is composed of sugar, hydrogen group and nitrogenous bases.
d. DNA is composed of nucleic acid, phosphate group and nitrogenous bases.
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Answer:
a
Explanation:
DNA is the chemical name for the molecule that carries genetic instructions in all living things. The DNA molecule consists of two strands that wind around one another to form a shape known as a double helix. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups.
Answer:
B
Explanation:
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