DNA/Protein Vocabulary Check PreAP

What is the basic structural unit of DNA?

• Nucleotide

• Amino acid

• Fatty acid

• Monosaccharide

Which nitrogenous base is found only in RNA and not in DNA?

• Thymine

• Uracil

• Adenine

• Guanine

What type of bond holds the two strands of DNA together?

• Ionic bond

• Hydrogen bond

• Covalent bond

• Peptide bond

Which enzyme is responsible for synthesizing RNA during transcription?

• DNA polymerase

• RNA polymerase

• Ligase

• Helicase

Which of the following is NOT a type of RNA?

• mRNA

• tRNA

• rRNA

• dRNA

What is the process called in which mRNA is synthesized from a DNA template?

• Translation

• Replication

• Transcription

• Mutation

Which organelle is the site of protein synthesis in eukaryotic cells?

• Nucleus

• Ribosome

• Mitochondria

• Golgi apparatus

What is a codon?

• A three-nucleotide sequence on mRNA

• A protein subunit

• A DNA-binding protein

• A type of mutation

Which of the following best describes a point mutation?

• A change in a single nucleotide base

• A duplication of a chromosome

• A loss of an entire gene

• An inversion of a chromosome segment

Tags

NGSS.HS-LS3-2

What is the function of tRNA during translation?

• Carries amino acids to the ribosome

• Synthesizes mRNA

• Replicates DNA

• Forms ribosomes