1
BIOS
BIOS242/ BIOS 242 EXAM 3: (LATEST 2025/ 2026
UPDATE) ANATOMY AND PHYSIOLOGY II G| QS & AS| GRADE
A| 100% CORRECT (VERIFIED ANSWERS)- CHAMBERLAIN
1. The third line of defense against foreign invaders can be described
as having _______ and _______: Specificity and Memory
2. A foreign molecule that causes a specific immune response is an
______-
: Antigen
3. ___ cells are part of the humoral immunity and mature in the Bone
Marrow: B cells
4. ____ cells are part of the cell mediated immunity and mature in the
thymus: T cells
5. The most abundant class of antibodies in serum is: IgG
6. _____ cells secrete antibodies: Plasma
7. IgG: monomer= 80% highest number of antibodies 2
binding site
, 2
BIOS
8. IgA: dimer= 13% of antigen
4,2 biding site
9. IgM: pentamer=6%
10 biding site
19. Example of natural active immunity: chicken pox infection, followed
by lifelong immunity
20. Example of natural passive immunity: breastfeeding or an antitoxin
because the body receives fully formed immunoglobulins and will not result
in memory
21. In HIV infection: CD4 T- helper cells are attacked, disruption of cell
mediated immunity
22. Tetanus differs from botulism in that: muscles cannot relax in
tetanus, while muscles cannot contract in botulism. 23. Botulism caused by
an: -exotoxin
- prevents the release of Ache resulting in faccid paralysis
BIOS
BIOS242/ BIOS 242 EXAM 3: (LATEST 2025/ 2026
UPDATE) ANATOMY AND PHYSIOLOGY II G| QS & AS| GRADE
A| 100% CORRECT (VERIFIED ANSWERS)- CHAMBERLAIN
1. The third line of defense against foreign invaders can be described
as having _______ and _______: Specificity and Memory
2. A foreign molecule that causes a specific immune response is an
______-
: Antigen
3. ___ cells are part of the humoral immunity and mature in the Bone
Marrow: B cells
4. ____ cells are part of the cell mediated immunity and mature in the
thymus: T cells
5. The most abundant class of antibodies in serum is: IgG
6. _____ cells secrete antibodies: Plasma
7. IgG: monomer= 80% highest number of antibodies 2
binding site
, 2
BIOS
8. IgA: dimer= 13% of antigen
4,2 biding site
9. IgM: pentamer=6%
10 biding site
19. Example of natural active immunity: chicken pox infection, followed
by lifelong immunity
20. Example of natural passive immunity: breastfeeding or an antitoxin
because the body receives fully formed immunoglobulins and will not result
in memory
21. In HIV infection: CD4 T- helper cells are attacked, disruption of cell
mediated immunity
22. Tetanus differs from botulism in that: muscles cannot relax in
tetanus, while muscles cannot contract in botulism. 23. Botulism caused by
an: -exotoxin
- prevents the release of Ache resulting in faccid paralysis
