Sucrose is formed when the simple sugars fructose and glucose are covalently bonded. This reaction releases water. What type of reaction is this?
A.
monomeric
B.
hydrolysis
C.
catabolic
D.
dehydration
D
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Labor begins when the increasing concentration of ________, which stimulate(s) uterine contractions, reaches a point that overrides the effect of ________, which inhibit(s) uterine contractions.
A. relaxin; progesterone B. estrogens; progesterone C. progesterone; estrogens D. relaxin; estrogens
If a red blood cell is placed in a hypotonic solution,
A. the cell will shrink. B. only permeable substances will leave; but concentrations in the cell do not change. C. the cell will swell and may eventually burst. D. the cell will remain the same size and shape.
Which of the following labeled panels in the figure shows hyperextension?
a) C b) E c) F d) G e) I
Which valve prevents the backflow of blood into the left ventricle when the ventricles relax?
A. Left atrioventricular valve B. Aortic semilunar valve C. Right atrioventricular valve D. Pulmonary semilunar valve E. None of the choices is correct.