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

Interferon is a chemical messenger sent from a virus infected cell. What is its function?

• Causes neighboring cells to make proteins to block viral reproduction

• Calls white blood cells over to take care of the infection

• Causes neighboring cells to build up thicker cell membranes so the viruses can't enter

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

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

T cells mature in the ___________

• Thymus gland

• Tibia Bone

• Tongue

• Tonsils

Tags

NGSS.HS-LS1-4

Which of the following does NOT describe macrophages?

• Phagocytize pathogens

• Use digestive enzymes to degrade pathogens

• Present chewed up bits of pathogens on their cell surface

• Search for a specific antigen to engulf