Amoebocyte
(Science: organism) phagocytic cell found circulating in the body cavity of coelomates (particularly annelids and molluscs) or crawling through the interstitial tissues of sponges. A fairly noncommittal classification.
Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..
Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..