BIO 148 Exam 2: Units 3 & 4 UPDATED ACTUAL and Correct Answers

BIO 148 Exam 2: Units 3 & 4 UPDATED ACTUAL and Correct
Answers
Question: What process does the Central Dogma explain?
Answer:
How genetic information is expressed

Question: Genes ______
Answer:
Code for proteins

Question: T/F You have genes important for eye function in your skin cells.
Answer:
True

Question: Which of the following is true concerning mRNA in eukaryotes.
Answer:
It is produced in
the nucleus and translated in the cytoplasm

Question: T/F One nucleotide change in DNA can have a large phenotypic effect.
Answer:
True

Question: T/F All genes are transcribed in every cell
Answer:
False

Question: T/F Each nucleotide in an RNA codes for one amino acid
Answer:
False

Question: Once transcription has initiated, which of the following would occur next?
A. The start codon is translated
B. mRNA is exported to the cytoplasm
C. The primary transcript is processed
D. The 5' UTR is transcribed
E. mRNA binds to the ribosome

,Answer:
D. The 5' UTR is transcribed

Question: A. Upstream of W: One the Diagram below, RNA polymerase would initially bind
Answer:
W = +1 nucleotide, X = 5' UTR, P = 3' UTR
A. Upstream of W
B. Between Q and S
C. At Q
D. In the region labeled X

Question: Z, the coding strand
Answer:
The gene in the diargam is transcribed by RNA polymerase from left to right. If the
primary transcript in the diagram has the sequence 5' AAAAGGGGGGAUGGGG....3', the DNA
strand with the sequence
5' AAAAGGGGGGATGGGG....3' would be found in the DNA strand labeled_______.

Question: Transcription produces a
Answer:
primary transcript

Question: A gene that codes for the BIO148 Protein is expressed in the liver and
kidneys of an animal. An animal was born with a mutation that prevents
the expression of the BIO148 Protein in kidney, but does not prevent its
expression in liver. Where is this mutation most likely located?
Answer:
in a gene switch

Question: RNA processing occurs in the ______
Answer:
nucleus

Question: The region between the +1 nucleotide and the start codon is called the
_____
Answer:
5' UTR

, Question: T/F Transcription stops at a stop codon
Answer:
False

Question: Which of the following does NOT occur during RNA processing?
Answer:
Removal of
exons from the primary transcript

Question: T/F Based on the video you watched about RNA processing, the mature RNA
contains sequences that will not be translated
Answer:
True

Question: Which of the following is true concerning mRNA in eukaryotes
Answer:
It is produced in
the nucleus, contains untranslated sequences and it is translated in the cytoplasm

Question: Which of the following are translated
A. the promoter
B. exons
C. the +1 nucleotide
D. the 5' cap
E. both the 5' cap and the +1 nucleotide
Answer:
B. exons

Question: X and P
Answer:
In the diagram below, what letter indicates a region that was transcribed by RNA polymerase, but
will not be translated by a ribosome? W = +1 nucleotide, X = 5' UTR, P = 3' UTR

Question: E. All of the above
Answer:
In the figure below, which of the following indicates a structure that is RNA or contains
RNA?
A. H and L only