Differentiate among LM, TEM, and SEM
What will be an ideal response?
A light microscope (LM) passes visible light through a thin section of tissue. A transmission electron microscope (TEM) uses magnets to direct a beam of electrons through a finely sectioned object. A scanning electron microscope (SEM) creates a three-dimensional image by first coating a surface with electron-dense material, then bombarding it with electron beams.
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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.
A slower-than-normal heart rate is called
A) tachycardia. B) bradycardia. C) hypercardia. D) hypocardia. E) procardia.
Placental functions are concentrated in a disc-shaped area in the endometrium called the
A) trophoblast. B) allantois. C) capsular decidua. D) basal decidua. E) parietal decidua.
The breakdown of starch by digestive enzymes into glucose molecules is a(n) ________ reaction.
A. exchange B. reduction C. anabolic D. synthesis E. decomposition