Peptides and catecholamines are hydrophilic and cannot penetrate a target cell. they therefore bind to receptors where?
a) on the DNA
b) on the cytoskeleton
c) in the nucleus
d) on the cell surface
Answer: d) on the cell surface
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In the brain, the outer cerebral cortex consists of gray matter, but in the spinal cord, gray matter is confined to the innermost regions.
Answer the following statement true (T) or false (F)
The first step in the scientific method involves the formation of a(n) ________.
A. experiment B. hypothesis C. theory D. law
Nonshivering thermogenesis is regulated by the ________ system.
A. parasympathetic B. sympathoadrenal C. somatic nervous D. limbic
Which two arteries arise from the right coronary artery?
A) the right anterior interventricular artery and the left posterior interventricular artery B) the left marginal artery and the right circumflex artery C) the right marginal artery and the right posterior interventricular artery D) the right anterior interventricular artery and the right circumflex artery