Define the word nucleus!!
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Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature about 37 degrees celsius (98.6 degrees f)? describe what might happened the temperature decreased by 10 degrees celsius.
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Environmental differences within ecosystems are generally caused by
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Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this
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