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The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..

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

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This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..

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Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..

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Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..

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Circulation

The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..