Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..
The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..
Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
