Hydrobiology

The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..

The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..

The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..

According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..

Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..

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The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..

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