The term ________ refers to a membrane that allows some things to pass through it, but not others.
A. specificity
B. selectively permeable
C. carrier-mediated
D. phospholipid bilayer
E. glycocalyx
Answer: B
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Lordosis is an abnormal curvature of the spine usually occurring in the ________.
A. thorax B. upper back C. lumbar region D. midbuttocks
Which of the following describe an aging heart? Select all that apply.
_____ There is hypertrophy of the myocardium. _____ The valves become more flexible. _____ There is degeneration of the conduction system. _____ There is an increased number of autorhythmic cells in the SA node. What will be an ideal response?
Which statement about the cardiac cycle is false?
A. The right and left ventricle go through systole and diastole one after the other. B. The right and left atria go through systole and diastole at the same time. C. The AV valves function together. D. The semilunar valves function together.
A patient's urine sample has tested positive for nitrites. What is the most likely reason for the presence of nitrites in the urine?
A) bacterial infection of the urinary tract B) porphyria C) diabetes mellitus D) glomerulonephritis