Botulinum toxin and tetanus toxin BOTH block the release of neurotransmitters, but botulinum toxin causes ________, whereas tetanus toxin causes ________
a. severe diarrhea / tissue necrosis
b. tissue necrosis / severe diarrhea
c. spastic paralysis / flaccid paralysis
d. flaccid paralysis / spastic paralysis
Answer: D
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Any genetic differences between individuals in a population are called
A. markers. B. alleles. C. polymorphisms. D. SNPs.
What is the cyncytium?
a. rod-like structures discharged from mucus in free-living flatworms b. a layer of cells formed by nuclear division without cytokinesis c. a layer of fused cells that covers muscle layers in flatworms d. a nerve structure associated with photosensory cells in tapeworms
After eleven years, the descendants of transferred guppies in Venezuela and Trinidad were significantly larger than
their ancestors, indicating that the larger size of guppies was a(n) adaptation to the new environment. __________________ Indicate whether the statement is true or false.
A population of deer has a per capita rate of increase of 0.1 deer per year. If there are initially 300 deer in the population, and the population is growing exponentially, how many deer will be in the population after 1 year?
A) 30 B) 300 C) 330 D) 600