The enzyme that catalyzes the formation of a particular damaging amyloid ?-peptide, and is implicated in inherited forms of early-onset Alzheimer's disease is ________.
A. ?-secretase
B. ?-secretase
C. ?-secretase
D. ?-secretase
Answer: A
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________ secretion is controlled by neuroendocrine reflexes, whereas ________ secretion is controlled by negative feedback mechanisms.
A. Antidiuretic hormone (ADH); oxytocin (OT) B. Thyroid stimulating hormone (TSH); luteinizing hormone (LH) C. Antidiuretic hormone (ADH); thyroid stimulating hormone (TSH) D. Oxytocin (OT); antidiuretic hormone (ADH) E. Follicle-stimulating hormone (FSH); luteinizing hormone (LH)
The effective plasma concentration of a hormone is normally regulated by appropriate adjustments in the hormone's rate of
a. excretion b. binding to plasma proteins c. metabolic inactivation d. secretion e. binding with target-cell receptors
Which of the following is not a reason a reflex response may fail during a clinical exam?
A) The person may consciously suppress the response. B) The nerves may be damaged. C) The person may be elderly and no longer have any reflexes. D) The CNS may be damaged. E) There may be nerve conduction problems.
Which of the following type of muscle contains the largest number of mitochondria per cell?
a) Smooth muscle b) Skeletal muscle c) Cardiac muscle d) All the muscle types contain approximately the same number. e) Mitochondria are not found in muscle cells.