BIL 150 GAINES TEST 2 QUESTIONS
COMPLETE WITH 100% VERIFIED
ANSWERS
\.Not too long ago, it was believed that a count of the number of protein-coding
genes (the genome) would provide a count of the number of proteins (the
proteome) produced in any given eukaryotic species. This is incorrect, largely due
to the discovery of widespread ________.
A. chromatin remodeling.
B. alternative RNA splicing.
C. transcriptional control.
D. translational control
E. All of the above - ANSWERS-B.
\.Histone acetyl transferases (HATs) and demethylases are enzymes used by
eukaryotes to _____.
A. increase the rate of transcription
B. cause apoptosis
C. terminate transcription
D. facilitate the binding of DNA to intermediate filaments
,E. inactivate genes - ANSWERS-A.
\.Which of the following do proteins, carbohydrates and nucleic acids have in
common?
A. They are made of amino acids.
B. Their structures contain sugars.
C. They are hydrophobic.
D. They are large polymers made up of monomers.
E. They each consist of four basic kinds of subunits. - ANSWERS-D.
\.Telomere shortening is a problem in which types of cells?
A. Archaea
B. Bacteria
C. eukaryotes
D. both prokaryotes and eukaryotes
E. methanogens - ANSWERS-C.
\.In the mismatch repair process, enzyme complexes replace bases that were
incorrectly inserted into the newly synthesized DNA strand. To function, they must
be able to distinguish between the parent DNA strand and the new strand. How is
this accomplished?
, A. The parent strand is methylated.
B. The new strand contains ribose sugars.
C. The parent strand is usually radiolabeled.
D. The new strand contains the diphosphate base
E. The new strand contains telomeres - ANSWERS-A.
\.While examining a rock surface, you have discovered an interesting new
organism. Which of the following criteria will allow you to classify the organism as
belonging to Bacteria but not Archaea or Eukarya?
A. It is a single cell (unicellular)
B. Cell walls are made primarily of peptidoglycan.
C. Organism does not have nucleus.
D. It has ribosomes - ANSWERS-B.
\.RNA polymerase moves along the template strand of DNA in the ________
direction, and adds nucleotides to the ________ end of the growing transcript.
A. 3' → 5'; 5'
B. 3' → 5'; 3'
C. 5' →3'; 5'
D. 5' → 3'; 3'
E. 3' → 3', 5' - ANSWERS-B.
COMPLETE WITH 100% VERIFIED
ANSWERS
\.Not too long ago, it was believed that a count of the number of protein-coding
genes (the genome) would provide a count of the number of proteins (the
proteome) produced in any given eukaryotic species. This is incorrect, largely due
to the discovery of widespread ________.
A. chromatin remodeling.
B. alternative RNA splicing.
C. transcriptional control.
D. translational control
E. All of the above - ANSWERS-B.
\.Histone acetyl transferases (HATs) and demethylases are enzymes used by
eukaryotes to _____.
A. increase the rate of transcription
B. cause apoptosis
C. terminate transcription
D. facilitate the binding of DNA to intermediate filaments
,E. inactivate genes - ANSWERS-A.
\.Which of the following do proteins, carbohydrates and nucleic acids have in
common?
A. They are made of amino acids.
B. Their structures contain sugars.
C. They are hydrophobic.
D. They are large polymers made up of monomers.
E. They each consist of four basic kinds of subunits. - ANSWERS-D.
\.Telomere shortening is a problem in which types of cells?
A. Archaea
B. Bacteria
C. eukaryotes
D. both prokaryotes and eukaryotes
E. methanogens - ANSWERS-C.
\.In the mismatch repair process, enzyme complexes replace bases that were
incorrectly inserted into the newly synthesized DNA strand. To function, they must
be able to distinguish between the parent DNA strand and the new strand. How is
this accomplished?
, A. The parent strand is methylated.
B. The new strand contains ribose sugars.
C. The parent strand is usually radiolabeled.
D. The new strand contains the diphosphate base
E. The new strand contains telomeres - ANSWERS-A.
\.While examining a rock surface, you have discovered an interesting new
organism. Which of the following criteria will allow you to classify the organism as
belonging to Bacteria but not Archaea or Eukarya?
A. It is a single cell (unicellular)
B. Cell walls are made primarily of peptidoglycan.
C. Organism does not have nucleus.
D. It has ribosomes - ANSWERS-B.
\.RNA polymerase moves along the template strand of DNA in the ________
direction, and adds nucleotides to the ________ end of the growing transcript.
A. 3' → 5'; 5'
B. 3' → 5'; 3'
C. 5' →3'; 5'
D. 5' → 3'; 3'
E. 3' → 3', 5' - ANSWERS-B.
