Environments that are hypertonic to their cytoplasm
What strategies do other organisms have that allow them to live in environments that are hypertonic to their cytoplasm?
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What properties allow phospholipids to form membrane bilayers? Why can't a fatty acid do this?
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A bucket is made from thin sheet metal. The bottom and top of the bucket have radii of 21.0 cm and 39.0 cm, respectively. The bucket is 30.0 cm high and filled with water. Where is the center of gravity? (Ignore the weight of the bucket itself.)
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Joe has a ring weighing 13 grams made of an alloy of 16 silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 69 . How many grams of silver should he add?
A young child grows rapidly, with high levels of cell division and high energy requirements.
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