CHAPTER 7 - Active transport - an energy-requiring process...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Active transport - an energy-requiring process that moves material across a cell membrane. Aquaporin - are integral membrane proteins from a larger family of major intrinsic proteins (MIP) that form pores in the membrane of biological cells Concentration gradient- is the spontaneous net movement of particles from an area of high concentration to an area of low concentration in a given volume of fluid (either liquid or gas) down the concentration gradient. Co-transport -also known as coupled transport, refers to the simultaneous or sequential passive transfer of molecules or ions across biological membranes in a fixed ratio. Electrochemical gradient - is a spatial variation of both electrical potential and chemical concentration across a membrane. Endocytosis - a process where cells absorb material ( molecules such as proteins) from the outside by engulfing it with their cell membrane . Exocytosis - is the durable process by which a cell directs secretory vesicles out of the cell membrane Facilitated diffusion
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/30/2008 for the course BIO 121 taught by Professor Moss during the Spring '08 term at Western Michigan.

Page1 / 2

CHAPTER 7 - Active transport - an energy-requiring process...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online