LDL's are taken into a cell by the process of
A. simple diffusion.
B. osmosis.
C. receptor mediated endocytosis.
D. HDL carrier molecules.
E. facilitated diffusion.
C
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The branch of the nervous system that helps govern smooth muscle contraction is the _______ nervous system
A. autonomic B. somatic
The TMR:
a. is usually less than the BMR b. is usually greater than the BMR c. increases as activity increases d. both B and C above
What two major regulatory systems in the body have the most influence on the immune system?
a. circulatory and digestive b. circulatory and endocrine systems c. digestive and endocrine systems d. nervous and endocrine systems e. nervous and digestive systems
The normal pacemaker of the heart is located in
A) the Purkinje fibers. B) the sinoatrial node. C) the atrioventricular node. D) the wall of the left ventricle. E) both the left and right ventricles.