Question

activity: dna and rna structure
11 parts | 1.82 of 4 points
you can tell that this is an image of a dna nucleotide and not an rna nucleotide because you see a _.
uracil nitrogenous base, not a thymine nitrogenous base
sugar with two, and not three, oxygen atoms
phosphate group, not a uracil
thymine nitrogenous base, not a uracil nitrogenous base
double - stranded molecule, not a single - stranded molecule

Explanation:

DNA nucleotides contain deoxyribose sugar (which has one less oxygen atom compared to ribose in RNA). In the given structure, the sugar has two oxygen atoms (as in deoxyribose), while RNA's ribose has three oxygen atoms. DNA uses thymine and RNA uses uracil, but the image doesn't show the base clearly enough for that distinction. The phosphate group is present in both. Double - stranded vs single - stranded is a property of the whole molecule, not a single nucleotide.

Answer:

sugar with two, and not three, oxygen atoms