actin - actin The protein from which microfilaments are...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
actin The protein from which microfilaments are composed; forms the contractile filaments of sarcomeres in muscle cells. action potential A reversal of the electrical potential in the plasma membrane of a neuron that occurs when a nerve cell is stimulated; caused by rapid changes in membrane permeability to sodium and potassium. active transport Transport of molecules against a concentration gradient (from regions of low concentration to regions of high concentration) with the aid of proteins in the cell membrane and energy from ATP . PICTURE adaptation Tendency of an organism to suit its environment; one of the major points of Charles Darwin's theory of evolution by natural selection : organisms adapt to their environment. Those organisms best adapted will have a greater chance of surviving and passing their genes on to the next generation. adaptive radiation The development of a variety of species from a single ancestral form; occurs when a new habitat becomes available to a population
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

Ask a homework question - tutors are online