Question

1. Activation of the complement cascade _____.

1. Can cause the infecting microbe to be killed by lysis
2. Reduces swelling in affected tissues
3. Prevents cleavage of complement proteins such as C3 and C5
4. Typically reduces the ability of phagocytoses to engulf microbes
5. Can reduce inflammation

2. The ability to ward off infections through nonspecific and specific defenses is called .

1. Autoimmunity
2. Immunity
3. Resistance
4. Inflammation
5. Tolerance

3. The cells that are involved in specific resistance are ____.

1. Neutrophils
2. Lymphocytes
3. Basophils
4. Eosinophils
5. Monocytes

4. Which of these processes is in the proper sequence?

1. IgE formed: IgE binds to cast cells and basophils; antigen binds IgE; histamine is released
2. IgE is formed: antigen binds IgE: IgE binds to mast cells : mast cells bind to basophils : histamine is relased
3. IgE is formed; antigen binds IgE: histamine is released: IgE binds to mast cells and basophils
4. IgE is formed ; antigen binds IgE : IgE binds to mast cells and basophils : histamine is released
5. IgE formed: IgE binds to mast cells and basophils Histamine is released; released antigen binds IgE .

Answer 1

1) The correct answer is-

a) Can cause the infecting microbe to be killed by lysis

This is because when the complement cascade is activated the complement proteins produce pores that allow the entry of membrane damaging molecules, such as lysozyme, and makes the bacterium susceptible to osmotic lysis.

3) The correct answer is-

E- monocytes

Monocytes are the cells which lead to activation of T lymphocytes, which then mount a specific immune response against the antigen.

4) The correct answer is -

D-
IgE is formed ; antigen binds IgE : IgE binds to mast cells and basophils : histamine is released