Multiple-choice Quiz

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Chapter 13

This activity contains 8 questions.

The wobble hypothesis involves __________.

	tRNA
	mRNA
	rRNA
	both mRNA and rRNA
	both mRNA and tRNA

RNA synthesis on a DNA template is called __________.

	transformation
	translation
	transduction
	transcription
	transfection

Areas of a eukaryotic gene that are represented in the final protein product are termed __________.

	introns
	mutons
	recons
	exons
	cistrons

Enhancer elements are found __________.

	in none of the stated regions; enhancers are environmental agents
	in any of these regions
	within coding sequences
	downstream from the start site
	upstream from the start site

Regarding enhancers and transcription factors (TFs) and their effects on gene expression, __________.

	both are trans-activating
	enhancers are cis-activating, while TFs are trans-activating
	enhancers are trans-activating, while TFs are cis-activating
	both are cis-activating
	neither are cis- or trans-activating; they are repressors

Which of the following experiments or discoveries did NOT help to identify the "triplet nature" of the DNA code?

	frameshift mutations
	anticodons
	start and stop codons
	RNA homopolymers
	universality of the genetic code

Which of the following does NOT involve introns?

	alternative splicing
	ribozymes
	intervening sequences
	heteroduplexes
	antisense oligonucleotides

The genetic code is considered "degenerate" because __________.

	the code originated from bacterial genomes
	DNA is unstable
	Degenerate is the name of the person who deciphered the code
	more than one nucleotide triplet codes for the same amino acid

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