Immunity: Chapter 06, B Cells and Humoral Immunity

Antibodies that bind and block the function of a molecule are called neutralizing antibodies, and the process is known as neutralization. Which of the following consequences of antibody binding are due to neutralization?

	a)	Inactivation of toxins secreted by bacteria that cause tetanus.
	b)	Killing of parasitic worms.
	c)	Prevention of viral infection of cells by an antibody directed against the viral coat.
	d)	Activation of the classical pathway of complement.
CorrectWrong: a and c are correct.Your answer has been saved.

Which of the following statements are true?

	a)	Antibody-dependent cellular toxicity (ADCC) requires functions of activating Fc receptors.
	b)	Cytokines released by helper T cells regulate the levels of the inhibitory Fc receptor (FcγRIIB) on phagocytes.
	c)	Activating Fc receptors signal via ITAM sequences in cytoplasmic components of the receptors.
	d)	Most Fc receptors specific for IgG also bind to IgA.
CorrectWrong: a, b, and c are true.Your answer has been saved.