Biol 105 - Chapter 19 with
100% correct answers
(graded A+)
If cells of an individual contain the same set of genes, how do these cells
become different from each other during development? - answer Differences
in extracellular signals received by each cell lead to differences in the types
of regulatory proteins present in each cell.
A gene-regulating strategy that is unique to eukaryotic cells is ________. -
answer mRNA processing
Muscle cells differ from nerve cells mainly because they _______. - answer
express different genes
What is an advantage of the chromatin system in eukaryotes compared to
bacteria. - answer It allows for an additional layer of regulation on gene
transcription based on the state of the chromatin in eukaryotes.
What level if transcription would you predict for a gene whose promoter is
heavily methylated? - answer Low to no transcription levels
In a nucleosome, the DNA is wrapped around ________. - answer Histones.
If you were to observe the activity of methylated DNA, you would expect it to
_______. - answer have turned off or slowed down the process of transcription
In one set of experiments she succeeded in increasing acetylyiation of
Histones tails. Which of the following results would she most likely see? -
answer Decreased chromatin condensation
100% correct answers
(graded A+)
If cells of an individual contain the same set of genes, how do these cells
become different from each other during development? - answer Differences
in extracellular signals received by each cell lead to differences in the types
of regulatory proteins present in each cell.
A gene-regulating strategy that is unique to eukaryotic cells is ________. -
answer mRNA processing
Muscle cells differ from nerve cells mainly because they _______. - answer
express different genes
What is an advantage of the chromatin system in eukaryotes compared to
bacteria. - answer It allows for an additional layer of regulation on gene
transcription based on the state of the chromatin in eukaryotes.
What level if transcription would you predict for a gene whose promoter is
heavily methylated? - answer Low to no transcription levels
In a nucleosome, the DNA is wrapped around ________. - answer Histones.
If you were to observe the activity of methylated DNA, you would expect it to
_______. - answer have turned off or slowed down the process of transcription
In one set of experiments she succeeded in increasing acetylyiation of
Histones tails. Which of the following results would she most likely see? -
answer Decreased chromatin condensation
