speract
sea urchin peptide hormone, from the jelly coat of the eggs of the sea urchins Strongylocentrotus purpuratus and Hemicentrotus pulcherrinus, affecting motility and metabolism. Receptor is a plasma membrane guanylate cyclase.
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..
Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..
