Blind passage

This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..

The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..

Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...

Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..

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