Which of the following is true about trans fatty acids found in hydrogenated fats?
a. When consumed, they can decrease blood clotting.
b. When consumed, they can raise serum LDL cholesterol.
c. When consumed, they can lower serum LDL cholesterol.
d. When consumed, they have no effect on serum cholesterol.
b. When consumed, they can raise serum LDL cholesterol.
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Self-propagation and refractory periods (states) are typical of _____
A) action potentials B) graded hyperpolarizations C) excitatory postsynaptic potentials D) threshold potentials E) resting potentials
Communication within and between cells of an embryo can include all of the following EXCEPT _____
A) increased concentration of signaling molecules B) changes in binding to regulatory sequences C) changes in gene transcription D) changes in gene sequences
The primary function of an enzyme or any biological catalyst is to
A. reduce the energy of activation of a reaction. B. increase the rate of a reaction. C. increase the rate of a reaction and change the direction of a reaction. D. reduce the energy of activation and increase the rate of a reaction. E. change the direction of a reaction.
To be diagnosed as having hypertension, you consistently will have a diastolic pressure of ______ mm
Hg and a systolic pressure of _____ mm Hg. a. 120; 80 b. 80; 120 c. 90; 140 d. 140; 90 e. 120; 73