Chapter 9

A chromosome contains many different gene regions that are transcribed into different __________. a. proteins b. polypeptides c. RNAs d. a and b

A binding site for RNA polymerase is called a __________ . a. gene b. promoter c. codon d. protein

An RNA molecule is typically _________ ; a DNA molecule is typically __________. a. single-stranded; double-stranded b. double-stranded; single-stranded

RNAs form by __________; proteins form by __________. a. replication; translation b. translation; transcription c. transcription; translation d. replication; transcription

The main function of a DNA molecule is to __________. a. store heritable information b. carry a translatable message c. form peptide bonds between amino acids

The main function of an mRNA molecule is to __________. a. store heritable information b. carry a translatable message c. form peptide bonds between amino acids

Most codons specify a(n) _________. a. protein b. mRNA c. amino acid

Energy that drives transcription is provided mainly by __________. a. ATP b. RNA nucleotides c. GTP d. RNA polymerase

Anticodons pair with __________. a. mRNA codons b. DNA codons c. RNA anticodons d. amino acids

Up to __________ amino acids can be encoded by an mRNA that consists of 45 nucleotides plus a stop codon. a. 15 b. 45 c. 90 d. 135

__________ are removed from new mRNAs. a. Introns b. Exons c. Telomeres d. Amino acids

Where does transcription take place in a typical eukaryotic cell? a. the nucleus b. ribosomes c. the cytoplasm d. \(b\) and \(c\) are correct

Where does translation take place in a typical eukaryotic cell? a. the nucleus b. the cytoplasm c. a and b d. neither a nor b

Energy that drives translation is provided mainly by __________. a. ATP b. amino acids c. GTP d. all are correct

Match the terms with the best description. $$\begin{array}{cc}\text{__________ genetic message} && \text {a. protein- coding segment}\end{array}$$ $$\begin{array}{cc}\text{__________ promoter} && \text {b. RNA polymerase binding site}\end{array}$$ $$\begin{array}{cc}\text{__________ polysome} && \text {c. read as base triplets}\end{array}$$ $$\begin{array}{cc}\text{__________ exon} && \text {d. removed before translation}\end{array}$$ $$\begin{array}{cc}\text{__________ genetic code} && \text {e. occurs only in groups}\end{array}$$ $$\begin{array}{cc}\text{__________ intron} && \text {f. complete set of 64 codons}\end{array}$$