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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 22:00
When the body has a weakened immune system, the production of antibodies is increased.
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Biology, 22.06.2019 22:30
Astudent wants to compare the amounts of co2 given off by yeast provided with different amounts of sugar. the student places a balloon over each container to catch the released co2. which observation is a qualitative observation the student can make?
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Biology, 23.06.2019 00:30
Which is an example of precipitation. 1snow 2clouds 3natural gases 4organic matter
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When a rancher puts cattle in a pasture, what happens to the amountof grass in it...
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