What bridges the gap between a neuron sending a message and the neuron receiving it?
A. Threshold value
B. Action potential
C. Neurotransmitter
D. Cytoplasm
E. Dopamine
Answer: C
Biology & Microbiology
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An enzyme that breaks down protein is
A. lipase. B. lactase. C. pepsin. D. amylase. E. bile.
Biology & Microbiology
__________________, is the first number listed in blood pressure readings, measures the force of the left ventricle contraction.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Human reproductive systems are best described as
A) perfect. B) dioecious. C) hermaphroditic. D) budding.
Biology & Microbiology
The major function of the protonephridia in the flatworm is to:
a. conserve water. b. conserve salts. c. eliminate waste materials such as ammonia and urea. d. eliminate excess water. e. regulate the pH of the gastrovascular cavity.
Biology & Microbiology