The basic function of cytotoxic T cells is to identify and destroy invaders in our ________
A) blood or lymph
B) interstitial fluid
C) cells
D) immune system
C
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Are superantigen reactions beneficial or harmful to the host? What is different about a superantigen reaction compared to normal antigen-host cell interactions?
What will be an ideal response?
The eukaryotic chromosome is composed of ____
a. DNA only b. RNA only c. DNA and carbohydrate d. DNA and protein e. RNA and protein
Most ulcers are caused by____
a. eating spicy food b. overuse of aspirin c. bacterial infection d. stress e. poor diet
According to the graph, which is likely the factor limiting reproductive output of a female fruit fly?
a) availability of male mates b) time to mate with multiple males c) production of eggs d) eggs are much smaller and delicate than sperm e) males typically choose only one female