Chapter 9

A chromosome contains many different gene regions that are transcribed into different __________. a. proteins b. polypeptides c. \(\mathrm{RNAs}\) d. DNA strands

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

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

Most codons specify a(n) __________. a. protein b. polypeptide c. amino acid d. mRNA

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

What is the maximum number of amino acids that can be encoded by a gene with 45 bases plus a stop codon? a. 15 b. 45 c. 90 d. 135

__________ are removed from new mRNAs. a. Introns b. Exons c. Poly-A tails d. Amino acids

Where does transcription take place in a eukaryotic cell?

Where does translation take place in a eukaryotic cell?

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

Put the following processes in order of their occurrence during expression of a eukaryotic gene: a. mRNA processing b. translation c. transcription d. RNA leaves nucleus

Match the terms with the best description. _________ genetic message _________ promoter _________ polysome _________ exon _________ genetic code _________ intron _________ anticodon _________ RIP _________deletion _________ rRNA a. protein-coding segment b. transcription begins here c. read as base triplets d. removed before translation e. occurs only in groups f. 64 codons g. destroys ribosomes h. often causes a frameshift i. enzymatic RNA j. binds to a codon