Heavy use of which drug can lead to hallucinations, anxiety, depression, paranoia, and psychotic symptoms?
A. heroin
B. ecstasy
C. marijuana
D. methamphetamine
E. cocaine
Answer: C
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According to Fig 9.13, phosphate groups play a key role in receptor kinase activation by:
A. activating the receptor so that the receptor is capable of binding its signal. B. activating the dimerization of the receptor kinase proteins in the membrane. C. activating receptor kinase activity. D. providing binding sites to recruit and activate signal-transduction proteins. E. All of these choices are correct.
Which of the following choices places the layers of human skin in the correct order from shallowest to deepest?
a. dermis, epidermis, hypodermis b. hypodermis, dermis, epidermis c. hypodermis, epidermis, dermis d. epidermis, dermis, hypodermis
Sound amplification happens in the middle ear because of ________
A) resonance in the efferent outer hair cells B) stapedial reflex C) lever action of the ossicles D) size difference between the eardrum and oval window
If a bacterial cell is in a hypertonic solution, water will move in what direction?
A) Out of the cell B) Into the cell C) Water will be at equilibrium