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Lilit [14]
3 years ago
15

1. Mike injured his knee while playing. Examination revealed that the injured area was red, swollen, and warmer than the surroun

ding area. What does this condition indicate?
an inflammation

a tumor–like growth

a hemorrhage

2. When a virus invades the body, some B cells recognize it as nonself and produce plasma cells that release a substance to kill the virus. What is this substance called?

antigen

antibody

pathogen

3. Which of the following forms blood clots?

fibrin

macrophages

thrombin


4. An antigen has invaded a mammal's body. Specific immune cells engulf and ingest it. Some of the digested pieces are displayed on the cells' bodies. What happens next?

B cells are activated and release antibodies.

T cells are activated and produce clones.

B cells withdraw the immune response as the antigen is killed.
Biology
1 answer:
xxMikexx [17]3 years ago
5 0
1. Inflammation

2. Antibody

3.Thrombin

4. B cells are activated and release antibodies.
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