SFSU BIO 230 FINAL EXAM ||VERIFIED EXAM!!||
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For an operon that is always on, further investigation
shows that the repressor works properly. Why might the
operon be always on?
a. The beta-galactosidase gene has a mutation that
enhances lactose breakdown
b. The beta-galactosidase gene has a mutation that
prevents lactose breakdown
c. There is more RNA polymerase
d. There is enhanced feedback inhibition - Answer-b. The
beta-galactosidase gene has a mutation that prevents
lactose breakdown
How can a cell control the amount and timing of protein
production?
a. Access to the DNA, controlled by histones (epigenetics)
b. Control of promoter region by transcription factors and
epigenetics
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c. Number of DNA copies of a given gene
d. Control of RNA polymerase rate
e. All of above
f. None of above - Answer-e. all of the above
What from below is NOT correct about the PCR method?
a. It is a technique to amplify specific DNA fragments.
b. It uses a very small amount of template.
c. It uses repeated cycles of denaturation, DNA replication,
and cooling to double the amount of DNA during each
cycle.
d. It utilizes a not very stable DNA polymerase (Taq
polymerase)
e. None of above - Answer-d. It utilizes a not very stable
DNA polymerase (Taq polymerase)
Now, what IS correct about working with BIG DATA?
a. Amount and format of
genomic/proteomic/metabolomic/ionomic data pose
serious problems for interpretation, experimental design
and replication, and storage
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b. Bioinformatics is how the flood of biological data is
created, interpreted and organized.
c. Once sequences are generated, they are compared to
known sequences or tested for other functionality
d. None of above
e. All of above - Answer-e. All of above
What is NOT correct about the OMICS techiniques
(Proteomics, Transcriptomic, Metabolomic) we studied?
a. Proteomics can be used can be used to monitor gene
expression of thousands of genes expressed in a
particular cell in a single experiment.
b. Proteomics is related to the study of proteins,
particularly their structure and function.
c. Transcriptomic can be used can be used to monitor
gene expression of thousands of genes expressed in a
particular cell in a single experiment.
d. None of above
e. All of above. - Answer-a. Proteomics can be used can
be used to monitor gene expression of thousands of
genes expressed in a particular cell in a single experiment.
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Which from below can be used to help accurately identify
the proteins being translated?
a. 2D Gels
b. Mass Spectrometry
c. Western Blotting
d. Protein microarrays
e. Chromatography
f. All of them
g. None of them - Answer-f. All of them
What are the two components of the proton-motive force?
a. pH gradient and equilibrium
b. pH gradient and voltage
c. voltage and ATP
d. voltage and lipid-soluble agents - Answer-b. pH gradient
and voltage
Which molecule is responsible for unwinding DNA
supercoils before replication in E. coli?
a. DNA helicase
b. DNA ligase
c. DNA polymerase III