The most intensive or peak effect of marijuana is felt in about _____.
A. 10 minutes
B. 20 minutes
C. 30 minutes
D. 40 minutes
Answer: C
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Why does ACh slow the heart rate? Choose the correct option
A) It stimulates muscarinic receptors that open potassium channels. B) It stimulates muscarinic receptors that close potassium channels. C) It stimulates nicotinic receptors that open potassium channels. D) It stimulates nicotinc receptors that close potassium channels.
The blood cell whose main job is to fight infections is the
A. red blood cell. B. plasma cell. C. white blood cell. D. platelet.
High-achieving students are more likely to try illegal drugs than those who have a casual attitude toward school
Indicate whether the statement is true or false
Conceptual physical fitness programs
a. focus on information, appraisal procedures, and program planning. b. are a proven phenomenon. c. increase a person's knowledge, which ensures a change in behavior. d. are the most important part of a physical education program.