Question

The nucleic acid DNA is an organic compound. DNA is made up of repeating subunits called ___________________. Each DNA molecule consists of _____ long chains of nucleotides. A DNA nucleotide has three parts: a sugar molecule called ________________; a ________________ group, and a molecule that is referred to as a ________________ _______ because it contains nitrogen atoms. The deoxyribose sugar and the phosphate group are identical in all DNA nucleotides. However, the nitrogenous base may be any one of _______ different kinds. The four nitrogenous bases found in DNA nucleotides are ________________, ________________, ________________, and ________________. The two strands of a DNA molecule are held together by ____________________________ ________________.

Answer 1

The nucleic acid DNA is an organic compound. DNA is made up of repeating subunits called nucleotides . Each DNA molecule consists of 2 long chains of nucleotides. A DNA nucleotide has three parts: a sugar molecule called deoxyribose ; a phosphate group, and a molecule that is referred to as a nitrogenous base because it contains nitrogen atoms. The deoxyribose sugar and the phosphate group are identical in all DNA nucleotides. However, the nitrogenous base may be any one of 4 different kinds. The four nitrogenous bases found in DNA nucleotides are adenine, thymine, cytosine, and guanine. The two strands of a DNA molecule are held together by hydrogen bonds.

Step-by-step explanation:

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