Signs of aging at the cellular level are (Select all that apply) A) graying hair, waning strength, and wrinkles.B) unrepaired DNA and abnormal proteins.C) impaired cell division and the ability to break down and recycle worn cell parts.D) a fatty liver and clogged blood vessels.
What will be an ideal response?
B, C
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Shaking the head "no" causes changing of the signal originating from the ________ semicircular canal.
Fill in the blank(s) with the appropriate word(s).
Hyaluronic acid gives a very slippery quality to fluids that contain it. Hyaluronic acid
A. resists stretching. B. promotes oxygen transport in the plasma. C. is a good lubricant for joint cavities. D. functions as an insulator. E. is a protein.
Which type of receptor binds norepinephrine on cardiac muscle, thus increasing cardiac activity?
a. cholinergic. b. nicotinic. c. alpha. d. beta1. e. beta2.
What do you expect to see if the activity of the reticular formation is decreased?
A) increased level of consciousness B) decreased level of consciousness C) increased metabolism D) fever