a simple goiter usually affects men
a. true
b. false
b. false
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Some insecticides, such as chlorpyrifos, work by inhibiting the enzyme acetylcholinesterase (AChE), which normally breaks down the neurotransmitter acetylcholine. Where does this insecticide most likely bind to inhibit the enzyme's activity?
A. The part of an enzyme that combines with acetlycholine B. It does not need to bind with the enzyme directly C. A sequence of DNA nucleotides that encodes the AChE enzyme protein molecule D. Any location on the amino acid chain that forms the AChE enyzme
Match the following:
A) Syphilis B) Gonorrhea C) Genital warts D) Chlamydia E) Genital herpes 1) Human papillomavirus. 2) Treponema pallidum. 3) Urethritis in males. 4) Human herpes virus type 2. 5) Organism responsible for up to half of the diagnosed cases of pelvic inflammatory disease.
Neurons that have several dendrites and one axon are called ____ neurons
a. bipolar b. unipolar c. multipolar d. uniaxial
After a nerve cell responds to a stimulus, the period of time when the cell cannot respond again, regardless of the strength of stimulus, is called the _____ refractory period.
Fill in the blank(s) with the appropriate word(s).