The botulinum toxin, which causes botulism, reduces the synaptic release of _____
A) acetylcholine
B) epinephrine
C) endorphin
D) nitric oxide
E) gamma-aminobutyric acid (GABA)
Answer: A
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One function of the developing follicle is to
a. stimulate ovulation. b. secrete progesterone. c. secrete estrogens. d. secrete gonadotropin-releasing hormone. e. secrete glycoproteins, which promote sperm motility.
There are sixty one different codons that code for amino acids, but only twenty different amino acids, meaning that the genetic code is ________
Fill in the blank(s) with correct word
What type of electric charge do protons carry?
A) negative B) positive C) neutral D) no charge
Which hormones counteract each other in regulating calcium homeostasis?
A. atrial natriuretic peptide and aldosterone B. antidiuretic hormone and parathyroid hormone C. antidiuretic hormone and aldosterone D. antidiuretic hormone and vitamin D (1,25 dihydroxyvitamin D) E. parathyroid hormone and vitamin D (1,25 dihydroxyvitamin D)