Multiple Choice
The diagram shows a generalized cross section of the marine environment with various zones labeled with letters. 
-Innate immunity ________.
A) is activated immediately upon infection
B) depends on an infected animal's previous exposure to the same pathogen
C) is based on recognition of antigens that are specific to different pathogens
D) is found only in vertebrate animals
E) utilizes highly specific antigen receptors on B cells
Correct Answer:
Verified
Correct Answer:
Verified
Q42: An epitope is _.<br>A) part of the
Q43: Which statement best describes the difference in
Q44: Which of the following is a difference
Q45: Select the pathway that would lead to
Q46: CD4 and CD8 are _.<br>A) proteins secreted
Q48: The diagram shows a generalized cross section
Q49: If a patient is missing B and
Q50: How does the immune system of vertebrates
Q51: B cells interacting with helper T cells
Q52: Your sister-in-law never gets sick, while her