Activity
Serendip

Cells as Molecular Factories

For Teachers 9th - 12th
Cells are both made of molecules and make molecules all at the same time! An exploratory lesson provides a means for scholars to research the components of cells made of molecules and also investigate the molecule-producing power of...
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Khan Academy

Khan Academy: Biology Foundations: Unit Test

For Students 9th - 10th
A nine-question unit test over biology foundations along with a review of the chemistry basics to help you understand the beauty of life.