The neurotransmitter acetylcholine ____.
A. speeds heart rate
B. induces skeletal muscle contraction
C. increases anxiety
D. has a role in memory and learning
E. dilates pupils
Answer: B
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Consider this statement: Information about citizens' genomes should be held in a centralized database by a single
private company or by the government. Do you agree or disagree? Explain your reasoning. What will be an ideal response?
Which term includes all others in the list?
a. Monosaccharide b. Carbohydrate c. Disaccharide d. Starch e. Polysaccharide
Which of these pathways best summarizes the route of a mineral that is absorbed by a plant?
A) Root hairs ? epidermis ? cortex ? endodermis ? pericycle ? xylem B) Root hairs ? pericycle ? endodermis ? endodermis ? cortex ? xylem C) Root hairs ? endodermis ? cortex ? pericycle ? xylem D) Root hairs ? epidermis ? endodermis ? cortex ? xylem E) Root hairs ? cortex ? epidermis ? phloem ? xylem
Dead leaf tissue on plants is a condition called:
A. necrosis B. hyperpigmentation C. viral mosaicism D. leaf injury E. none of the above