3 SEQUENCE IN INTRON SPLICING - CORRECT ANSWER: AG

BIO 210 Genetics - Exam 2 Latest Update - 150 Questions and 100% Verified Correct Answers Guaranteed A+

3' POLYA TAILING - CORRECT ANSWER: the attachment of a string of adenine-

containing nucleotides to the 3' end of EUK mRNA at a site where the mRNA is cleaved; protects the stability and integrity of the mRNA

3' SEQUENCE IN INTRON SPLICING - CORRECT ANSWER: AG

5' - AUG - 3' - CORRECT ANSWER: start codon

5' CAPPING - CORRECT ANSWER: the attachment of a 7-methyl. cap to the 5' end of

EUK mRNA; signal for translation; helps mRNA exit the nucleus

5' SEQUENCE IN INTRON SPLICING - CORRECT ANSWER: GU

5'-UAA-3' - CORRECT ANSWER: stop codon

5'-UAG-3' - CORRECT ANSWER: stop codon

5'-UGA-3' - CORRECT ANSWER: stop codon

A SITE - CORRECT ANSWER: a site on a ribosome where a charged tRNA initially

binds; elongation

ACETYLATION - CORRECT ANSWER: relaxation of nucleosome structure to help RNA

poly navigate; promotes transcription

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ACTIVATOR - CORRECT ANSWER: regulatory protein that increases the rate of

transcription

ACTIVATOR PROTEIN , TFIID, MEDIATOR... - CORRECT ANSWER: proceed to

elongation phase of transcription

ALLOLACTOSE - CORRECT ANSWER: inducer that binds to lac repressor, allowing

transcription

ANISENSE RNA - CORRECT ANSWER: adds a complimentary strand to mRNA which

inhibits translation by the ribosome

ANTICODON - CORRECT ANSWER: a three nucleotide sequence in tRNA that is

complementary to a codon in mRNA

ANTICODONS - CORRECT ANSWER: a three nuleotide sequence in tRNA that is

complementary to a codon in mRNA

BACTERIAL AND EUK RIBOSOMES ARE ASSEMBLED FROM... - CORRECT

ANSWER: rRNA and proteins

BACTERIAL RIBOSOME - CORRECT ANSWER: 30s small subunit; 50s large subunit =

70s assembled ribosome

BACTERIAL TRANSCRIPTION IS INITIATED WHEN - CORRECT ANSWER: RNA

polymerase holonenzyme binds at the promoter

CODON - CORRECT ANSWER: 3 nucleotide sequence w.in mRNA that determines the

sequence of amino acids w.in a polypeptide

COMBINATORIAL CONTROL - CORRECT ANSWER: there are multiple means of

activation and expression within EUK genes

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