$32.$ Gene expression can be regulated in a number of ways, but the most common isa.Regulation of transcription of the gene to start with Post$-$transcriptional regulationPost$-$translational regulationd. Mutation of the gene to make it non$-$functional$33.$ If DNA contains $30\%$ G$,$ what percent T is present?a$.$b$.$C$.$d$\mathrm{.}15\%20\%30\%40\%\_34.$ The base pairs in complementary DNA strands are held together byA.$)$ Hydrogen bondsC.$)$ Oxygen bondsB.$)$ Covalent bondsD.$)$ lonic bonds$\_35.$ DNA replicates by which of the following models?a$.$ conservativeb. semiconservativeC.dispersived. none of the above$37.$ A promoter isa. a specific sequence of DNA nucleotidesb. a specific sequence of RNA nucleotidesc. a protein that binds to DNA to get a gene transcribedd. an enzyme that synthesizes RNA$38.$ Portions of eukaryotic mRNA sequence that are removed during RNA processing area. exonsb. capsc. poly$-$A tailsd. introns$39.$ The RNA components of ribosomes are synthesized in the $\_$a$.$ cytoplasmb. nucleusc. nucleolusd. endoplasmic reticulum$40..$ How long would the peptide be that is translated from this MRNA sequence: $5\text{'}-$AUGGGCUACCGA$-3\text{'}?$a$\mathrm{.}0$ b$2$ c $3$ d$4$