Which of the following is NOT true of
antibodies?
a. they are secreted by B cells and T cells
b. they are Y shaped
c. they activate complement
d. they facilitate phagocytosis
e. they bind to specific antigens
A
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Generally, exotoxins tend to be more heat stable than endotoxins.
Answer the following statement true (T) or false (F)
When DNA is cut with a restriction enzyme, the resulting fragments have
A) 5' carboxyls. B) 5' hydroxyls. C) 3' hydroxyls. D) 3' phosphates. E) 3' carboxyls.
Eukaryotes have inducible genes that respond to environmental stimuli
__________________ Indicate whether the statement is true or false.
The various characteristics of organisms that result from their genetic makeup are collectively referred to as an organism's ________
A) alleles B) proteome C) genotype D) genome E) phenotype