The genes involved in tumorigenesis constitute a specific subset of the genome whose products are involved in which of the following activities?
a) apoptosis
b) adhesion of a cell to its neighbors
c) all of the choices are correct
d) repair of DNA damage
e) progression of a cell through the cell cycle
Ans: c) all of the choices are correct
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One of the ways agricultural production of such fruits as tomatoes or cucumbers can be increased significantly is to grow them in:
A. soils rich in magnesium B. soils rich in nitrogen C. greenhouses supplied with extra carbon dioxide D. greenhouses with extra oxygen E. None of these is true
In the Gram-staining procedure, the primary stain is
A. alcohol. B. crystal violet. C. iodine. D. safranin.
Each antibody has ______ binding site(s); binding of antibodies to a virus particle results in the particles being ________
a. one; disrupted and hydrolyzed b. two; disrupted and hydrolyzed c. two; clumped with other particles d. three; disrupted and hydrolyzed e. three; clumped with other particles
Which of the following cerebral areas is correctly matched with its function?
a. occipital lobes?control auditory centers b. temporal lobes?control skeletal muscles c. frontal lobes?control visual centers d. parietal lobes?receive sensations of heat, touch, pressure e. substantia nigra?control learning and language