AP Biology Immune System

Saliva, tears, and sweat contain which enzyme?

• lysozyme

• protein kinase

• hydrochloric acid

• lactase

Histamines directly cause:

• Helper T cells to mark pathogens for destruction

• Cytotoxic T cells to become activated

• B and T cells to create memory cells

• Blood vessels to dilate and leak fluid and WBC's

Which of the following are considered "Professional Antigen Presenting Cells"?

• B Cells

• Macrophage

• Dendritic Cells

• T Cells

Which of the following cells have MHC Class II proteins on their surface?

• All nucleated cells

• Only APC's (Antigen Presenting Cells)

Means: "programmed cell death"

• Natural Killer Cell

• Mitosis

• Apoptosis

• CD4 and CD8

A B cell that is actively making antibodies is called a(n)

• memory B cell

• plasma cell

• Helper T cell

• Naive B cell

Helper T Cells activate which of the following?

• Cytotoxic T Cells

• B Cells

• Macrophages

• Natural Killer Cells

Cytotoxic T Cells scan the _______ protein + antigen on regular body cells.

• MHC - Class 1

• MHC - Class 2

If a person has already had chicken pox, why do they generally not get sick a second time?

• Memory B and T cells activate the immune system before the virus has a chance to make you sick

• Natural killer cells recognize the pathogen quicker

• Your 1st line of defense does a better job

Which of the following is part of the humoral response?

• antibodies

• Cytotoxic T cells

• Natural Killer Cells

• Lysozyme