Superantigens are produced by antigen presenting cells
a. true
b. false
Ans: b. false
Biology & Microbiology
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The inducing antigens that react with an antibody are called heterologous antigens
Indicate whether the statement is true or false.
Biology & Microbiology
Weak selection against the dominant phenotype
a. reduces the equilibrium frequency of the dominant genotypes b. completely eliminates the dominant genotypes c. has no effect on the dominant genotypes
Biology & Microbiology
Stress increases cortisol secretion. Why would diabetics have problems controlling their blood sugar levels when they are stressed?
What will be an ideal response?
Biology & Microbiology
Spiegelman and colleagues demonstrated natural selection with RNA molecules. How did they satisfy the three ingredients for natural selection?
What will be an ideal response?
Biology & Microbiology