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