Biology 1404 Exam Chapter 15-17,21 Review Questions and Answers 2023

Gene expression - -The process by which DNA directs protein synthesis and has two stages - transcription - translation -Transcription - -the synthesis of RNA using information in DNA - produces messenger RNA (mRNA) -Translation - -the synthesis of a polypeptide using information in the mRNA -Ribsosomes - -the sites of translation -Translation in prokaryotes - -translation of mRNA can begin before transcription has finished (coupled) -Transcription in eukaryotes - -transcription and translation are compartmentalized -Primary transcript - -The initial RNA transcript from any gene prior to processing in eukaryotes -triplet code - -a series of non-overlapping, three nucleotide words = codons -Template strand - -provides a template for ordering the sequence of complementary nucleotides in an RNA transcript -the template strand is always the same strand for any given gene - -true -Genetic code - -a nearly universal sequence shared by the simplest