Wearing gloves, hair nets, and making sure there is no cross contamination
Answer:
Target heart rate is generally expressed as a percentage (usually between 50 percent and 85 percent) of your maximum safe heart rate. The maximum rate is based on your age, as subtracted from 220. So for a 50-year-old, maximum heart rate is 220 minus 50, or 170 beats per minute.
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Answer:
The receptors are like locks and the keys to open these locks are the odor molecules that float past, explains Leslie Vosshall, a scientist who studies olfaction at Rockefeller University. People have about 450 different types of olfactory receptors.
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Answer:
Microvilli function to increase the functional absorptive capacity of the small intestine cells
Explanation:
Microvilli cover the apical surface of the intestinal absorptive cells, (i.e., enterocytes), thereby increasing the surface absorption area of the small intestine from 20 to 1000-fold. Microvilli are numerous projections that have only one dimension beyond 100 nanometers (nm) and form a fingerlike brush border. In a similar manner to the experiment that involves two papers towels contacting two cups of colored water, this formation can significantly increase the velocity of absorption because the colored water molecules have higher surface to move faster from the cup that is in contact with the paper in a zigzag way.
