Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..
This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..