A function of cholesterol that does not harm health is its role ____.
a) All of cholesterol's effects cause the body harm.
b) the most abundant male sex hormone
c) as a component of animal cell membranes
d) in calcium and phosphate metabolism
e) as the primary female sex hormone
Ans: as a component of animal cell membranes
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Which of the following reactions prevails in red blood cells traveling through alveolar capillaries? (Hb = hemoglobin)
A) Hb + 4 O2 ? Hb(O2)4 B) Hb(O2)4 ? Hb + 4 O2 C) CO2 + H2O ? H2CO3 D) H2CO3 ? H+ + HCO3- E) Hb + 4 CO2 ? Hb(CO2)4
What is the name of the motor protein that enables motion of organelles and cytoplasm within the cell?
a. actin b. ATP c. myosin d. ?-tubulin
Are all the disulfide bonds in insulin between the two chains?
a. yes b. no
The ossa coxae and the sacrum make up the
a. pelvis b. cranium c. foot d. spine