If van der Waals forces are weak, how can geckos utilize these forces to cling to and walk up vertical smooth
surfaces?
What will be an ideal response?
ANSWER: The toes of geckos are covered by millions of hairs (setae). At the tip of each setae are
hundreds of thousands of pads, where each pad forms a weak interaction with a smooth
surface due to van der Waal forces. Collectively, these forces form strong attractive forces.
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Some cyanobacteria form ________, which are comprised of chains of bacterial cells that are in close contact with one another over a large area.
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What is the probability that two lizards that are heterozygous for stripes on their tails (Ss) will produce
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Which vitamin is fat soluble?
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