2025 Genetics Test Study Guide

The monomers of DNA and RNA are called _______

• amino acids

• carbohydrates

• nucleotides

• polypeptides

What are the 3 parts of a nucleotide?

• phosphate group

• sugar molecule

• nitrogenous base

• hydrogen bond

Which of the following bases is NOT found in RNA?

• adenine

• thymine

• guanine

• uracil

Using complementary base pairing rules, what would U pair with?

• T

• U

• A

• A and T

A DNA strand has the following bases: AAG CCA. What is the sequence of bases on the complementary strand of DNA?

• AAG CCA

• TTC GGT

• ACC GAA

• CCA TTC

Which of the following statements best describes the semiconservative model of DNA replication?

• all molecules with interspersed parental and new fragments

• all molecules with two new strands

• all molecules with one parental and one new strand

What did the original DNA look like that produced a mRNA strand with the following sequence: AGU ACA?

• UCA UGU

• AGT ACA

• TCA TGT

• AGU ACA

Factory for making a protein

• mRNA

• rRNA

• tRNA

Carries the amino acid used to make a protein

• mRNA

• rRNA

• tRNA

Which type of RNA takes the instructions from the nucleus to the cytoplasm?

• mRNA
• tRNA
• rRNA
• RNA polymerase