Prescription drugs such as Prozac help maintain higher levels of serotonin in the brain. What effect will this have on an individual?
A) It will act as an antidepressant because a lack of serotonin is considered a cause of depression symptoms.
B) It will act to suppress impulsive behavior because too much serotonin causes children to act out.
C) It will cause a patient to be sleepy because serotonin is essential to a good night's sleep.
D) It will cause tetany due to an overproduction of acetylcholine.
A
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Which of the following is NOT a mechanism used by bacteria to condense their DNA?
A. Super coiling B. Packaging the DNA with histone proteins C. Looping of the DNA D. Increase or decrease the number of turns in the DNA E. Anchoring the DNA loops with DNA-binding proteins
Rejection of inappropriately collected or transported specimens:
a. is the sole responsibility of the laboratory and should be performed without regard to physician requests. b. should be initiated by laboratory personnel but approved by the nurses or physicians responsible for the care of the patient. c. is not in the best interest of patient care and should not be considered appropriate. d. is the responsibility of the nursing staff and should not be an issue for laboratory personnel.
What important structure uses lenticels to communicate with the atmosphere in mangroves?
a. Pneumatophores b. Aerenchyme c. Chromatophores d. Nutritive roots
The ABO blood types have ____ different
genotypes.
a. 4 b. 6 c. 8 d. 12 e. 16