What are the definitions of Science

Technology

Chemistry

Physics

Geology

Astronomy

Biology

Scientific Method

Observation

Hypothesis

Dependent Variable

Independent Variable

Controlled Experiment

Scientific Theory

Scientific Law

Model

Scientific Notation

Length

Mass

Volume

Density

Conversion Factor

Precision

Significant Figures

Accuracy

Thermometer

Slope

Direct Proportion

Inverse Proportion

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.