Question

which structural component is found in dna but not in rna?
ribose
deoxyribose
phosphate group
nitrogenous base

Explanation:

• Ribose: Found in RNA (as ribose sugar in RNA nucleotides), not in DNA.
• Deoxyribose: Found in DNA (as deoxyribose sugar in DNA nucleotides), while RNA has ribose.
• Phosphate group: Present in both DNA and RNA nucleotides.
• Nitrogenous base: Both DNA and RNA have nitrogenous bases (though DNA has thymine which RNA replaces with uracil, but the presence of nitrogenous bases is common to both).

Answer:

deoxyribose