T cells recognize antigens with their
A) antibodies.
B) leukocidins.
C) M proteins.
D) T cell receptors.
Answer: D
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Bacteria synthesize CDP-diacylglycerol in order to build ________, a major cell membrane phospholipid component.
A. lipopolysaccharide B. peptidoglycan C. lipid rafts D. phosphatidylethanolamine
Some RIPs are not as toxic as ricin. What is the main difference between toxic and non-toxic RIPs?
What will be an ideal response?
Which species of cyanobacteria is sold commercially?
a. E. Coli b. Salmonella c. Lactobacillus d. Spirulina e. Rhizobium
The active ingredient in Ecstacy works by
a. binding to active transporters in brain neuron membranes. b. blocking the movement of neurotransmitters across synapses c. binding to neuroreceptors on the ends of neurons d. stopping signal transmissions down the length of an axon e. inhibiting the release of neurotransmitters at the synaptic junction