______ actually kill other cells by secreting perforin molecule
A) Macrophages B) Helper T cells C) Allergens
D) B cells E) Cytotoxic T cells Ans✓✓✓ Cytotoxic T cells
A person who is blood type B will make antibodies against the _____
antigen.
a. A b. B c. O d. a and b only e. a and c only Ans✓✓✓ B
A substance that can cause an immune response is called a(n) ______.
A) complement B) interferon C) histamine D) antibody
E) antigen Ans✓✓✓ antigen
Antibodies are ______.
A) amino acids B) lipids C) carbohydrates
D) proteins E) nucleic acids Ans✓✓✓ proteins
Antibodies are made up of ______ only.
a. two light chains b. two heavy chains c. one light and one heavy chain
d. two light and one heavy chain e. two light and two heavy chains
Ans✓✓✓ two light two heavy chains
, B cells mature in the ______.
a. thymus b. lymph nodes c. bone marrow d. liver e. pancreas Ans✓✓✓
bone marrow
Detection of interferon in a laboratory rat means that ______.
A) the rat has, or recently had, a viral infection
B) cancerous cells are present in the rat C) the rat's diet is deficient in
calcium
D) the complement system is activated by exposure to an antigen E)
none of the above Ans✓✓✓ the rat has, or recently had, a viral
infection
Each antibody has ______ antigen binding site(s).
a. one b. two c. three d. four e. eight Ans✓✓✓ two
How are Complement proteins assist the immune response?
A) enhancing the effects of antibiotics
B) coating the surface of microbes, thus making it easier for
macrophages to phagocytize them
C) reducing inflammation D) all of the above E) none of the above
Ans✓✓✓ coating the surface of microbes, thus making it easier for
macrophages to phagocytize them
It is best to receive an organ transplant from a donor who ______.