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Question 1
from companies that mass produce them
from the government
by making them in their labs
by exploiting ambitious graduate students
4 points
Question 2
only the top layer
only the bottom layer
a mixture of top and bottom layers
none of the options listed
4 points
Question 3
vigorously shake the tissue sample in the solvent so that it dissolves.
spin the tissue/solvent mixture around to separate the solids
cause the mRNA to bind to the pellets
dispose of biohazardous waste safely
3 points
Question 4
“mRNA sticks to the beads, while rRNA and tRNA run right through the column”
“tRNA sticks to the beads, while mRNA and rRNA run right through the column”
“rRNA and tRNA stick to the beads, while mRNA runs right through the column”
none of the options listed
4 points
Question 5
reverse transcriptase
tyrosine hydroxylase
alcohol dehydrogenase
ATP kinase
4 points
Question 6
complementary DNA (abbreviated cDNA)
copied DNA (abbreviated cDNA)
mitochondrial DNA (abbreviated mtDNA)
recombinant DNA (abbreviated rDNA)
3 points
Question 7
copies of DNA from one particular gene
copies of DNA from several different genes with similar functions
copies of DNA from several different genes with different functions
copies of mRNA from one or more genes
4 points
Question 8
The cDNA from the sample has stuck to the DNA on the microarray at that point.
The cDNA from the sample is jumbled and cannot be trusted.
The cDNA has been used to make an mRNA copy
You need to buy microarrays from different manufacturers and triangulate the results
4 points
Question 9
cancerous; normal
normal; cancerous
normal; normal
cancerous; cancerous
3 points
Question 10
genes expressed by both normal or cancerous skin cells.
genes that were not expressed at all in either normal or cancerous skin cells
“genes expressed by cancerous, but not normal skin cells”
“genes expressed by normal, but not cancer skin cells. ”
4 points
Question 11
genes that are turned up by cancer
genes that are turned down by cancer
genes that are unaffected by cancer
genes that aren t expressed in normal or cancerous cells
4 points
Question 12
genes that are turned down by cancer
genes that are turned up by cancer
genes that are unaffected by cancer
genes that aren t expressed in normal or cancerous cells
3 points
Question 13
the turned up genes are likely controlled by a gene that has gone bad
all of these genes are genes that have gone bad themselves
even just one mutation in any of these affected genes would have been sufficient to cause the disorder
the cytoplasm has too many free radicals in it
4 points
Question 14
“probably making protein, but a protein expression analysis would be needed to know for sure”
definitely making protein
definitely not making protein
probably making protein but there’s no way to know for sure
4 points
Question 15
“may or may not be identified at all, but the overall pattern of results can give important clues”
can almost always be identified via DNA microarray
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