Question

Which chemical components may be parts of a molecule of transfer RNA?

A) ribose, phosphate group , uracil base

B) deoxyribose, phosphate group , guanine base

C) glucose, amino group, thymine base

D) maltose, carboxyl group, uracil base

Answer 1

A) ribose, phosphate group , uracil base

Step-by-step explanation:

tRNA nucleotides (monomers) have:

• 1 ribose sugar
• 1 phosphate group
• 1 nitrogenous base

Deoxyribose = sugar found in DNA only

Thymine = nitrogenous base found in DNA only

Uracil = nitrogenous base found in RNA only

Maltose = complex sugar that has nothing to do with genetic material

Carboxyl group = not found in genetic material