Learners identify negative roles, match statements characteristic of each role, and relate how they have handled negative teams.

In this learning activity you'll observe the growth of gram negative organisms and determine if they're lactose positive or negative.

In this interactive object, the learner practices identifying charges on ions.

In this overview, students examine and identify mannitol positive and mannitol negative bacteria on mannitol salt agar.

Ions are electrically charged particles obtained from an atom or from a chemically bonded group of atoms by adding or removing electrons. Eight examples illustrate the number of protons, neutrons, and electrons in positive ions (cations) and in negative ions (anions).

In this learning activity you'll describe inflation, its causes, and the negative consequences of it.

The inverting amplifier configuration is presented. The closed loop voltage gain and the closed loop bandwidth formulas are explained, along with the concept of negative feedback.