Examlex
________ transport of molecules across a selectively permeable membrane requires the input of energy from the cell,whereas ________ transport of molecules across a selectively permeable membrane does not require the use of cellular energy.
Basic Law
A fundamental principle or rule that forms the foundation of a system of beliefs, behavior, or reasoning, often referring to the essential laws of a scientific discipline.
Physics
The natural science that studies matter, its motion and behavior through space and time, and the related entities of energy and force.
Like Charges
Charges that are the same (either both positive or both negative) and repel each other according to Coulomb's law.
Opposite Charges
Charges that have different electrical signs, one positive and one negative, which attract each other.
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