The repolarization of cardiac muscle is due to _______
A) potassium exiting the cell
B) potassium entering the cell
C) sodium exiting the cell
D) sodium entering the cell
Answer: A) potassium exiting the cell
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A) carbohydrate B) lipid C) protein D) salt E) nucleic acid
Which structure of the larynx vibrates to produce sound?
A) epiglottis B) vestibular ligaments C) tracheal rings D) vocal ligaments
The shape of a ligand and the shape of its binding site influence both the specificity and the affinity of binding
Indicate whether the statement is true or false.
During the postabsorptive phase of metabolism:
A. glycogen in muscle cells is broken down to glucose, which is released into the blood. B. liver glycogen is broken down to glucose, which is released into the blood. C. triacylglycerols in adipose tissue are broken down to glucose by lipolysis. D. the liver exports lactate to the muscles, which use it for fuel. E. glycerol and fatty acids are rapidly assembled into triglycerides in adipose tissue.