Question

_____ 25) How is a secondary immune response different from a primary immune response?

A) it is faster and more effective B) it is slower, but more effective C) it is faster, but less effective D) it is slower, and less effective E) there is no difference

_____ 19) Which of the following is not a function of antibodies?

A) opsonization                                 B) activating complement proteins

C) activating T-helper cells            D) enhancing phagocytosis          E) neutralization

_____ 13) The complement system involves

A) the production of antigens and antibodies

B) serum proteins involved in non-specific defense

C) a set of genes that distinguish foreign cells from body cells

D) the elimination of undigested remains of microorganisms

E) the production of precursors molecules from T-helper cells

Answer 1

25) How is a secondary immune response different from a primary immune response?

A. It is faster and more effective. Secondary immune response is the reaction of the immune system occurs as a result of subsequent exposure to the same antigen. It responses in a shorter time when compared to primary immune responses. The responses are stronger whereas the primary immune response is weaker.

19) Which of the following is not a function of antibodies?

c. activating T-helper cells.

A. oponization - stimulate the removal of pathogens and other cells by macrophages.

B. activating complement protein - Antibody has two specific proteins that help to bind to the antigen.

D. enhancing Phagocytosis - The complement system attacks the pathogen for phagocytosis or lysis.

E. neutralization - Antibodies prevent the pathogen from damaging of the cells.

13) The complement system involves

B) serum proteins involved in non-specific defense. The plasma proteins activated when the antibody binds to the antigen. The protein interacts with one another to form a complement cascade that allows fluid to enter into the cell and causes cell lysis.