The genes of the lac operon code for proteins associated with lactose metabolism. Which of the lac gene products is associated with transport of lactose into the cell?
A) ?-galactosidase
B) transacetylase
C) galactoside permease
D) ?-lactase
E) lactose translocase
Answer: C
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A. kill cells by inhibiting protein synthesis. B. modify cell physiology resulting in increased secretion of water and electrolytes. C. modify cell physiology resulting in decreased secretion of water and electrolytes. D. kill cells by inhibiting DNA synthesis. E. kill cells by inhibiting protein synthesis AND modify cell physiology resulting in increased secretion of water and electrolytes.
In the disease, _____, motor neurons are destroyed and death by respiratory failure occurs
within three to five years of diagnosis.
Fill in the blank(s) with the appropriate word(s).What is the cell wall made of for eukaryotic and prokaryotic cells
What will be an ideal response?
Vaccinations protect against future exposure to disease organisms by
A) stimulating suppressor T cells. B) increasing complement proteins. C) increasing the number of red blood cells. D) forming memory cells.