permease
(Science: enzyme) general term for a membrane protein that increases the permeability of the plasma membrane to a particular molecule, by a process not requiring metabolic energy.
See: facilitated diffusion.
A type of protein believed to be involved in active transport and acts as a protein carrier.
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..
Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcri..
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..
This lesson looks at population attributes, regulation, and growth. It also covers population genetics, particularly gen..
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..