Tom has hepatitis, an inflammation of the liver. Which of the following symptoms would you expect to observe in Tom?
A) jaundice
B) elevated levels of blood glucose
C) impaired digestion of protein
D) blood in the feces
E) overproduction of blood plasma albumin
A
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Which of the following is NOT one of the three layers of tissue that forms the eyeball?
A. Conjunctiva B. Sclera C. Choroid D. Retina
Which of the following molecules cannot be used as a source of energy for humans?
A. Triglycerides B. Cellulose C. Glycogen D. Amino acids
Polar R groups of closely positioned amino acids often enter into ________ with each other, which helps give a protein its three-dimensional shape.
A. van der Waals repulsions B. ionic bonds C. sulfur-carbon bonds D. hydrophobic interactions E. hydrogen bonds
. Which of the following statements about membrane potentials in different types of cardiac cells is TRUE?
A. Myocardial cells have a resting membrane potential of about -90 mV; pacemaker cells do not have a true resting membrane potential. B. Once threshold depolarization is reached in both myocardial and pacemaker cells, the rapid upswing of the action potential is caused by the opening of voltage-gated Na+ channels C. Voltage-gated transient (T-type) Ca2+ channels are present in all of the different types of cells of the heart. D. There are no L-type Ca2+ channels in cardiac muscle cells. E. The upstroke of the action potential is steeper in SA node cells than it is in Purkinje cells.