BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The nitrogenous base
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The type of fatty acid
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The length of the phosphate group
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The shape of the deoxyribose sugar
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Detailed explanation-1: -Every DNA nucleotide is composed of a sugar molecule called deoxyribose, a phosphate group, and a nitrogenous base. Differences in the structure of the nitrogenous base are what distinguish the nucleotides.
Detailed explanation-2: -A nucleotide is composed of a nitrogenous base, deoxyribose (five-carbon sugar), and at least one phosphate group. The nitrogenous bases are purines such as adenine (A) and guanine (G), or pyrimidines such as cytosine (C), thymine (T), and uracil (U).
Detailed explanation-3: -Each nucleotide is composed of a pentose sugar, a phosphate group, and one out of four nitrogenous bases (adenine, thymine, cytosine, and guanine). This means that a DNA molecule can have four types of nucleotides which differ only in the type of nitrogenous bases they have.
Detailed explanation-4: -What is ONE part of a nucleotide that differs among the four DIFFERENT nucleotides in your group? Sugar and phosphate bond together (connect) through covalent bonds and the nitrogen bases connect to each other through hydrogen bonds.