Explain how a cell isolated from the pancreas would be the same as a muscle cell. How would the two
cell types be different?
What will be an ideal response?
Both cell types would contain the same organelles; however, due to the very different functions of the
two cells, the proportion of certain organelles would be different. For example, the pancreatic cell
which is involved in the production of digestive enzymes would have an extensive rough ER network
while a muscle cell would have a large proportion of mitochondria to make the large amount of energy
necessary for muscle contraction.
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Which of the following relationships about nucleotide composition in DNA is TRUE?
A. C G=A T. B. C A=G T. C. C=A. D. G=T. E. C=T.
When gibberellin binds to its receptor, what happens to activate the gibberellin-dependent transcription factor GA-TRXN?
A. Ethylene is released. B. A ubiquitin tag is used to degrade the GA-TRXN inhibitor. C. A DELLA protein is degraded, freeing the GA-TRXN. D. A DELLA protein is attached to GA-TRXN to activate it. E. The gibberellin is transferred to an alternate binding site.
Where is the trp repressor gene located?
a. just upstream of the trp operon b. on a region of the chromosome distant from the trp operon c. adjacent to the lac repressor gene d. just downstream of the trp operon e. directly adjacent to the promoter region of the trp operon
The female hormone that participates in milk production is _____ and the hormone that facilitates delivery is _____
a. prolactin; oxytocin b. prolactin; estrogen c. prolactin; progesterone d. oxytocin; estrogen e. oxytocin; progesterone