Regardless of race, all human beings have about the same number of melanocytes
Indicate whether the statement is true or false
TRUE
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Fibronectin is a strong carbohydrate in the extracellular matrix of connective tissues that holds adjacent cells together
Indicate whether the statement is true or false
The normal sequence of structures activated for signal transmission and response in the body is
a. effector--afferent neuron--interneuron--efferent neuron-receptor. b. effector--efferent neuron--interneuron--afferent neuron-receptor. c. receptor--afferent neuron--interneuron--efferent neuron-effector. d. receptor--efferent neuron--interneuron--afferent neuron-effector.
What is "allosteric modulation"?
A. regulation of physiological functions by the sympathetic division of the autonomic nervous system B. modification of the functional state of a protein by temperature or pH C. the change in the shape and functional state of a protein that occurs when a ligand binds to a regulatory site D. the fact that all binding sites on a protein must be occupied to have a biological effect E. the ability of a single ligand-binding site to bind to molecularly similar ligands
The position of the head with respect to gravity is determined by the
A. shift in fluid in the semicircular canals. B. movements of otoliths in response to gravity. C. movements of perilymph in the vestibular chamber. D. impulses transmitted from the macula of the semicircular canals. E. stimulation of the cochlear portion of the nerve.