Biology, 11.10.2020 21:01 amanda2517
5. What are the percentages of the two elements at three half-lives of potassium-40?
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Biology, 22.06.2019 02:30
Contrast how pollination is different among gymnosperms and angiosperms.
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Biology, 22.06.2019 03:00
Nerve cells are specialized to respond to stimulitrue or false?
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Biology, 22.06.2019 10:50
The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.
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Biology, 22.06.2019 11:30
Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.
Answers: 1
5. What are the percentages of the two elements at three half-lives of potassium-40?...
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