In a prokaryotic operon, the region to which RNA polymerase binds is called
a. the heterogeneous nuclear DNA.
b. the repressor gene.
c. the promoter sequence.
d. the operator sequence.
e. all enhancer gene.
c
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A food spoilage process called ________ results in the release of foul-smelling amine compounds.
Fill in the blank(s) with the appropriate word(s).
Juvenile diabetes results when insulin producing cells in the pancreas are destroyed by the patient's
own immune system. Indicate whether the statement is true or false.
Which of the following features likely accounts for the difference between plant and animal cell cytokinesis?
A) Animal cells lack the microfilaments required for forming a cleavage furrow. B) Animal cells lack chloroplasts. C) Plant cells have cell walls. D) Plant cells have two sets of chromosomes; animal cells have one set of chromosomes.
Neurosecretory cells
A) coordinate the body's responses to stimuli such as dehydration, low blood glucose level, and stress. B) are restricted to the endocrine system. C) participate in the nervous and endocrine systems. D) produce hormones that will regulate nontarget cells.