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Which process uses proteins to move molecules against a concentration gradient?
A. Passive Transport
B. Active Transport
C. Hypotonic
D. Endocytosis
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This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is
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Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution
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How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?
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Which process uses proteins to move molecules against a concentration gradient?
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