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Biology, 22.06.2019 19:20
Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?
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Biology, 22.06.2019 21:30
Kendra has the ability to cover a distance in a short period of time. she is said to have a lot of agility power strength
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Biology, 23.06.2019 00:00
How many neutrons does element x have if its atomic number is 29 and its mass number is 86?
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What group of organic molecules is made up of a sequence of an amion group, a carboxyl group, a hydr...
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