Water accounts for 50% of the weight of a young adult female and 60% of a young adult male. What kind of molecule is found at "E"?
A. water molecule
B. polar covalent bond
C. hydrogen atom
D. oxygen atom
E. hydrogen bond
A
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Name and define the unit used to measure cell size
A) picometer; equal to one-trillionth of a meter B) nanometer; equal to one-billionth of a meter C) centimeter; equal to one-hundredth of a meter D) micrometer; equal to one-millionth of a meter E) millimeter; equal to one-thousandth of a meter
The sum of the electrical and chemical forces acting on an ion is known as its
A) permeability gradient. B) thermodynamic difference. C) electrochemical gradient. D) action potential. E) summation difference.
The placenta is formed by ________
A) maternal and fetal tissues B) fetal tissues C) maternal tissues
General functions of the parasympathetic division include
A) secretion by digestive glands. B) pupillary constriction. C) secretion of hormones that promote nutrient absorption by peripheral cells. D) constriction of the respiratory passageways. E) All of the answers are correct.