Multiple Choice
The first line of defense against infection is
A) unbroken skin or mucous membranes.
B) phagocytosis.
C) antibody production.
D) antigen recognition.
Correct Answer:

Verified
Correct Answer:
Verified
Q12: Immunology is defined as the system responsible
Q13: The immune system has distinctive characteristics, such
Q14: A specific component of the adaptive immune
Q15: Cell-mediated immunity is moderated by<br>A)B lymphocytes.<br>B)T lymphocytes.<br>C)monocytes-macrophages.<br>D)Both
Q16: T lymphocytes respond to<br>A)antigens presented on the
Q18: B lymphocytes respond to<br>A)antigens presented on the
Q19: Acquired immunity can result from<br>A)vaccination by injection
Q20: The immune system has distinctive characteristics, such
Q21: Characteristics of clonal selection include<br>A)antigen binding to
Q22: A child who contracts a contagious disease