BIO 210 Genetics - Exam 2 Latest Update 2024- 2025 Actual Exam 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
- / 2
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
- / 2