Category: Biology

Dialysis tubing in a solution to demonstrate osmosis
Anatomy & Physiology
Carolina Staff

Diffusion and Osmosis

All cells are bound by some type of permeable or semipermeable membrane that governs the ions, small molecules, and large molecules that enter and leave the cell. Diffusion is the general process of movement down a gradient that results in equal concentrations of solutes on both sides of the membrane. When water is the molecule entering or leaving the cell the process is osmosis. This guide breaks down the important information students need to know, provides links to products and free digital resources, and includes suggestions for hands-on-labs that reinforce student learning.

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chloroplasts-6258213_1920
Biology
Carolina Staff

Teaching the Calvin Cycle

The Calvin cycle of photosynthesis can be difficult to teach and to learn when presented only as a relentless sequence of complex reactions. Two ways

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animal-1238237_1920
Anatomy & Physiology
Carolina Staff

Rat Reproduction

Examining the reproductive system of the rat, students have the opportunity to compare male and female organs, study internal fertilization, and observe gestational changes in

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