homeostasis & transport study guide bI

Homeostasis & Transport Study Guide

	*What effect does diffusion have on the concentration of substances on either side of a membrane?*
	*In which direction does diffusion take place?*
	*The dispersal of ink in a beaker of water is an example of what process?*
	*By what process do sugar molecules enter a cell?*
	*In which direction do channels using facilitated diffusion work?*
	*Does facilitated diffusion occur against or with a concentration gradient?*
	*Besides energy, what else is needed for facilitated diffusion to occur?*
	*What happens to the shape of carrier proteins in facilitated diffusion?*
	*Electrical or chemical signals may control the movement of _________ across cell membranes.*
	*Which of these processes requires energy to occur --- chemiosmosis, active transport, or a sodium-potassium pump?*
	*Does diffusion require energy?*
	*A potassium ion would enter a cell by what process?*
	*What is osmosis?*
	*Sugar dissolving in water is an example of what process?*
	*Ridding a cell of waste by discharging it in sacs from the cell surface is known as ______.*
	*__________ is used to remove materials from a cell that are too large to pass through the cell membrane.*
	*Large molecules that can't pass through the cell membrane enter a cell by a process called ________.*
	*What is turgor pressure?*
	*What is plasmolysis?*
	*Explain solute concentration and water movement for cells in hypotonic solutions solution.*
	*Explain solute concentration and water movement for cells in hypertonic solutions solution.*
	*If solute concentration is lower outside a cell than inside a cell, where is their the greatest concentration of water? Which direction will water move?*