Many proteins on the outer surface of the cell are receptors, sites that "recognize" and bind with specific extracellular chemical messengers (signal molecules) in the cell's environment
a. True
b. False
Indicate whether the statement is true or false
True
Anatomy & Physiology
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The enzyme _____________ resides in the synaptic cleft and breaks down molecules of ACh
Fill in the blank with correct word.
Anatomy & Physiology
Irritation of the phrenic nerve may cause diaphragm spasms called hiccups
Indicate whether the statement is true or false
Anatomy & Physiology
The ionization of a/an ________ releases hydrogen ions and increases the concentration of hydrogen ions in a solution.
A. solvent B. salt C. acid D. base
Anatomy & Physiology
White blood cells engulf foreign particles by means of
A. macrocytosis. B. phagocytosis. C. exocytosis. D. pinocytosis. E. prestocytosis.
Anatomy & Physiology