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Assume the following: The total area of cell membrane in a single fat cell is 104 mm2,there is one insulin receptor per 1 mm2 of membrane,and 1 mm2 of cell membrane contains 106 phospholipid molecules.
(1)How many insulin receptors are in a fat cell?
(2)How many phospholipids molecules are in a fat cell?
(3)How many phospholipid molecules are there for each insulin receptor?
(4)What general principle of hormone action does your answer support?
Cross-sectional Study
A research method that analyzes data from a population, or a representative subset, at a specific point in time.
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To treat an abstract concept as if it were a concrete, real event or physical entity.
Field Research
The collection of information outside of a laboratory, library, or workplace setting, often involving direct observation or interaction with subjects in their natural environments.
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Concerns related to farming and food production, including sustainability, pesticide use, and water scarcity.
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