What would happen to people exposed to a chemical warfare agent that blocked acetylcholine from binding to muscle receptors?
A) Action potentials would be continuously generated, causing convulsive muscle contractions.
B) Muscle contractions would be prevented, causing paralysis.
C) Muscle contractions could still occur, but relaxation of the muscle would be impaired.
D) Action potentials would be continuously generated, causing convulsive muscle
contractions; muscle contractions would then be prevented, causing paralysis.
B
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The process by which antibodies block interactions between pathogens or their products and host cells is termed
A) attenuation. B) complement. C) interference. D) neutralization.
When the immune systems no longer distinguishes between self and nonself, _____ can result
a. autoimmunity b. anaphylaxis c. viral infections d. minor allergic reactions e. enhanced immune response
Briefly describe the life cycle of Drosophila.
What will be an ideal response?
A substance was added to a cell culture that inactivated the tRNA in the cell. Which is the best prediction of what will occur in this cell culture?
A) Amino acids will not form proteins. B) Ribosomes will not form. C) DNA will not be copied. D) Transcription will not occur.