Multiple Choice
Examine the figure below. 
Why is only one of the lymphocytes in this diagram activated by the pathogen?
A) Antigens move through the immune system by diffusion, so the lymphocyte closest to the site of infection binds the antigen first. Once a lymphocyte is activated, it produces chemicals that prevent the activation of other lymphocytes.
B) Lymphocytes are only activated if all of their receptors are bound by antigens. In this case, there were only enough antigens to fully activate one cell.
C) Your immune system contains many different lymphocytes, each displaying a different antigen-binding protein. In this case, the antigen only matched the binding protein on the cell that was activated.
D) Lymphocytes can only be activated by chemicals produced by the innate immune system. Only one of the cells in this diagram has been exposed to these chemicals.
Correct Answer:
Verified
Correct Answer:
Verified
Q12: The diagnosis of cancer represents a failure
Q44: A fever is the product of an
Q64: During the inflammatory response, swelling occurs as
Q65: Lymphocytes surround and digest the damaged host
Q66: Helper T cells<br>A)stimulate the proliferation of killer
Q68: _ cells remain in our body after
Q70: Fevers are a defense mechanism that helps
Q71: Macrophages and neutrophils make up a _
Q72: Which of the following is likely to
Q74: Once B cells become effector cells, they<br>A)produce