Biochemistry WGU Questions with 100% Correct Answers (2023 Revision)

RNA polymerase Correct Answer Enzyme that facilitates transcription Transcription Correct Answer synthesis of an RNA molecule from a DNA template Ribosome Correct Answer Large macromolecular complex where proteins are synthesized tRNA (transfer RNA) Correct Answer Form of RNA that is complementary to mRNA. Has a neucleotide anticodon on one end and an amino acid in the other. Translation Correct Answer decoding of a mRNA message into a polypeptide chain Coding strand (DNA) Correct Answer The original strand off which the new nucleotide sequence is based. Almost the same as mRNA template strand (DNA) Correct Answer The strand mRNA uses to make a copy. Complementary to mRNA missense mutation Correct Answer base substitution results in change in an amino acid nonsense mutation Correct Answer changes a normal codon into a stop codon silent mutation Correct Answer change in DNA that codes for the same amino acid Replication Correct Answer process of copying DNA prior to cell division DNA polymerase III Correct Answer synthesizes new DNA only in the 5' to 3' direction Needs a primer to start polymerase chain reaction (PCR) Correct Answer Copying DNA in lab. Used to study/diagnose PCR needs Correct Answer Target DNA dNTPs (deoxyneucleotides) DNA primers Taq polymerase (stable at high temps) Helicase Correct Answer An enzyme that untwists the double helix of DNA at the replication forks.