Biology Forums - Study Force

Why is a cell-mediated immune response more effective against intracellular microorganisms (such as viruses) than an antibody-mediated response?
 
  A.
  Cell-mediated (vs. antibody-mediated) response results in activation of a many more immune cells, so it is more effective at destroying antigens
 
  B.
  Intracellular microorganisms are too large for antibodies to be effective against
 
  C.
  Intracellular microorganisms are too small for antibodies to be effective against
 
  D.
  Cell-mediated response results in destruction of cell containing the intracellular microorganism; antibodies can't enter cells

---

(Question 2) 172. Lymphocytes with a CD8 glycoprotein on their surface are called ______ cells and lymphocytes with a CD4 glycoprotein on their surface are called ______ cells.
 
  A.
  cytotoxic T; B
 
  B.
  B; cytotoxic T
 
  C.
  B; helper T
 
  D.
  helper T; cytotoxic T
 
  E.
  cytotoxic T; helper

---

(Question 3) An MHC class II/antigen complex on the surface of an antigen-presenting cell (APC) binds to a T-cell receptor. What results from this interaction?
 
  A.
  Other immune cells are inhibited
 
  B.
  The antigen is phagocytized by the T cell
 
  C.
  The T cell responds by directly destroying the APC
 
  D.
  Other immune cells are stimulated to respond to the antigen

---

(Question 4) Activation of the complement cascade via the alternative pathway involves the spontaneous activation of the complement protein _____________.
 
  A.
  C1
 
  B.
  C2
 
  C.
  C4
 
  D.
  C5
 
  E.
  C3

---

(Question 5) During the development of lymphocytes, some pre-T and pre-B cells survive and develop into cells capable of an immune response, this is referred to as ______ selection.
 
  However some cells are suppressed from responding to self antigens, this is referred to as ______ selection.
 
  A.
  negative; positive
 
  B.
  neutral; negative
 
  C.
  negative; neutral
 
  D.
  neutral; positive
 
  E.
  positive; negative

---

(Question 6) All of the following are the signs and symptoms of local inflammation, except
 
  A.
  redness.
 
  B.
  edema.
 
  C.
  heat.
 
  D.
  pain.
 
  E.
  hemorrhage.

---

(Question 7) Describe the wall of lymphatic capillaries.
 
  A.
  Thin-walled, with tightly joined squamous cells
 
  B.
  Thin-walled, with tightly joined cuboidal cells
 
  C.
  Thick-walled, with overlapping squamous cells
 
  D.
  Thick-walled, with tightly joined squamous cells
 
  E.
  Thin-walled, with overlapping squamous cells

---

(Question 8) Interferons, interleukins, and lymphokines are examples of:
 
  A.
  chemical barriers.
 
  B.
  immune cells.
 
  C.
  immunoglobulins.
 
  D.
  mast cells.
 
  E.
  cytokines.

---

(Question 9) Defense mechanisms that respond at the same speed and efficiency upon repeated exposure are classified as ______ immunity and defense mechanisms that increase in speed and strength upon repeated exposure are classified as ______ immunity.
 
  A.
  innate; non-specific
 
  B.
  adaptive; innate
 
  C.
  specific; innate
 
  D.
  innate; adaptive

---

(Question 10) All of the following lack lymphatic capillaries, except
 
  A.
  the nervous system.
 
  B.
  the bone marrow.
 
  C.
  the epidermis.
 
  D.
  cartilage.
 
  E.
  skeletal muscle.

Content hidden