Exam Three Online Part One Flashcards

1
Q

what sequence is where epigenetic regulation typically occurs
ApT
GpC
UpC
CpG

A

CpG

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2
Q

imprinting is caused by sex-specific methylation
true/false

A

true

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3
Q

cell division by mitosis usually resects the genome by wiping out methylation patterns
true/false

A

false

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4
Q

angelman syndrome is a loss of function disease where the paternal chromosome is imprinted
true/false

A

true

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5
Q

there are multiple origins of replication within each human chromosome
true/false

A

true

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6
Q

telomerase is found in all cells
true/false

A

true

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7
Q

activators can lead to chromatin remodeling
true/false

A

true

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8
Q

transmission of organelle-encoded traits is usually uniparental
true/false

A

true

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9
Q

ChIPSeq is used to determine the amino acid sequence of chunks of proteins
true/false

A

false

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10
Q

DNA polymerase would be considered a housekeeping gene
true/false

A

true

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11
Q

interrupted mating or cotransduction experiments can demonstrate the order of genes on a bacterial chromosome
true/false

A

true

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12
Q

in a gain of function disease like Huntington gene therapy with a gene coding for mRNA could be a useful approach to treatment
true/false

A

true

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13
Q

DNA folding has no role in regulation of gene expression
true/false

A

false

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14
Q

alternative sigma factors can mediate the bacterias response to its environment
true/false

A

true

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15
Q

transcription factors generally bind as dimers or multidimers
true/false

A

true

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16
Q

mRNA is a type of RNAi that increases transcript levels
true/false

17
Q

eukaryotic genes are regulated by fewer proteins than are those in a prokaryote
true/false

18
Q

an enhancer is a cis acting element that may interact with a trans acting element
true/false

19
Q

histones can participate in the regulation of gene expression in bacteria
true/false

20
Q

eukaryotic activators are also called transcription factors
true/false

21
Q

methylation usually occurs at what sites on your DNA?

A

cytosine bases

22
Q

parent specific silencing of genes is called ___, and an example of a disease inherited in this manner would be ___

A

imprinting
Angelmans syndrome

23
Q

a group of structural genes in bacteria with a common function and under the control of a common promoter is called an ___

24
Q

in catabolite repression of the lac and other operons, the activity of the CRP protein depends on what small molecule binding to it?

25
about what % of your total genes code for transcription factors?
10%
26
what are two examples of post-translational protein modifications?
27
what 2 domains do all transcription factors have on them?
DNA binding and activation
28
give an example of a domain protein that binds to DNA
helix turn helix
29
what is the difference between the lytic and lysogenic cycles of a virus
the lytic cycle does not allow the virus DNA to integrate into the human genome, but the lysogenic cycle does
30
list at least 5 levels of control of gene expression in eukaryotes
transcription, translation, post transcription, post translation, epigenetics
31
how do you use a reporter gene (and give example) to see how a gene is regulated?
they identify enhancers, GFP
32
describe or illustrate the 2 mechanisms regulating the trp operon in bacteria
33
what's the difference between a riboswitch and a ribozyme
a riboswitch is a type of ribozyme that regulates transcription and translation