The tetanus toxin blocks the release of __________
and glycine from certain neurons, causing muscle
__________ and death from __________ and cardiac
failure.
a. GABA; spasms; respiratory
b. ACh; spasms; respiratory
c. GABA; relaxation; digestive
d. ACh; relaxation; digestive
e. GABA; relaxation; respiratory
Answer: a
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During radioactive decay, the nucleus of an atom ________
a. disintegrates, releasing particles and energy b. captures an unclaimed proton c. transposes its neutrons and electrons d. converts from a relatively stable to an unstable form
Four of the five answers listed below are bacterial structures. Select the exception
a. cell wall b. pilus c. capsule d. protein coat e. plasma membrane
The operon segment composed of the gene that codes for a protein repressor is called the ________.
A. regulator B. structural locus C. operator D. promoter
The VRDL test detects ________.
A. Rickettsia B. Candida C. syphilis D. Salmonella