A group of interacting serum proteins that provide a nonspecific defense mechanism is
A. complement.
B. interferon.
C. glycoprotein.
D. lysozyme.
A
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Vertical evolution arises from
A. genetic mutations. B. gene duplication. C. exon shuffling. D. genetic mutations and gene duplication. E. genetic mutations, gene duplication and exon shuffling.
The scientific name of an organism indicates its domain
Indicate whether this statement is true or false.
In plants, but not animals, each daughter cell differentiates and becomes specialized for its particular
function.
Indicate whether the statement is true or false.After 24 hours incubation of a facultative anaerobic bacterium in the 'Lysine Iron Agar', Yellow Butt can be interpreted as
A. The pH decreased B. The pH did not change during the incubation C. The pH is increased following an initial decrease D. The pH is decreased following an initial increase E. The pH change is irrelevant