A teacher assigns the following experiment to a class. Draw an outline of a bird's feather, and color one half of the outline with a thick coat from a wax crayon. Leave the other half uncolored. Next, sprinkle a few drops of water on both halves of the feather. You will observe that the water soaks into the plain paper. The waxy coat, however, allows the paper to remain dry. Water forms tiny beads on top of the wax instead of soaking through it.
The results of the experiment are MOST USEFUL for explaining which of these functions of lipids in organisms?
A. forming a waterproof covering on feathers, leaves, and fruits.
B. providing energy for the cell
C. allowing water to pass through the cell membrane
D. replacing water in dry environments
Answers: 1
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What happens when a magniseum ion ia atracked to a chlrene ion
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What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.
Answers: 2
A teacher assigns the following experiment to a class. Draw an outline of a bird's feather, and colo...
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