CELLS - CELL Basic unit of life no cells = no life 1...

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

View Full Document Right Arrow Icon
CELL Basic unit of life, no cells = no life 1. structure a. plasma membrane (cell) 1. phospholipid bilayer with cholesterol (mobile) 1 glyceride 2. proteins and glycoproteins (moveable) Fluid mosaic membrane a) transmembrane - entirely through bilayer b) integral - partially through bilayer c) peripheral - does not pass through Plasma Membrane Functions 1. Barrier between ECF and ICF a) controls permeability 1) pores/channels (tunnels) (passive transport and active transport processes) 2) gates - open and close according to substances to pass (Na+, K+, glucose, proteins - kidneys) 3) transport carriers b) glycoproteins (some) ID ie: blood types A, B, O (specialization) 2. Microvilli - increase surface area, intestine and kidney cells more efficient absorption into cells 3. Receptors in cell membrane react with external chemicals reactions inside cells NUCLEUS 1. Nuclear envelope - barrier between membrane and rest of cell, double membrance, pores (large) allow materials to pass except VERY LARGE molecules
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 04/02/2008 for the course BIOL 20204 taught by Professor Barcellona during the Fall '07 term at TCU.

Page1 / 2

CELLS - CELL Basic unit of life no cells = no life 1...

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