Bulk flow is fluid flow as a result of a(n) ________ gradient.
A) electrical
B) concentration
C) pressure
D) Two of the answers are correct.
E) None of the answers are correct.
C) pressure
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The purpose of the uvula is to help prevent food from entering the windpipe when swallowing.?
Indicate whether the statement is true or false
Chemoreceptors in the carotid and aortic bodies
A. primarily respond to changes in blood oxygen levels. B. become important in the control of breathing when oxygen declines, but carbon dioxide is normal. C. function in conditions such as being at high altitudes. D. produce an increase in the rate and depth of breathing E. have all of these characteristics.
The bonding properties of an atom are determined by its ________.
A. neutrons B. positrons C. protons D. photons E. electrons