Water molecules and small ions enter a cell through
A) channels formed by integral membrane proteins.
B) peripheral proteins.
C) lipid channels.
D) peripheral carbohydrates.
E) defects in the lipid layer of the membrane.
A
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The third direct branch from the aortic arch is the ____ artery.
a) right common carotid b) right subclavian c) brachiocephalic d) left subclavian e) left common carotid
Which of the following is not a function of the skeleton?
A. Protecting the spinal cord B. Storage of red blood cells C. Protecting the brain D. Providing support for most muscles E. Storage of calcium and phosphate ions
Match the following:
A) glycogenesis B) gluconeogenesis C) glycolysis D) glycogenolysis 1) Breakdown of glycogen to release glucose. 2) Formation of glucose from proteins or fats. 3) Storage of glucose in the form of glycogen. 4) Breakdown of glucose to pyruvic acid.
A neuron is a
A. cartilage cell. B. fiber cell. C. muscle cell. D. nerve cell.