Biology: The Dynamic Science (MindTap Course List)
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 5, Problem 8TYK
Summary Introduction

Introduction:

Tonicity is the effect of the solution surrounding the cell on the volume of the cell. To maintain the tonicity and the osmotic balance inside the cell, the water or solvent molecules move in or out of the cell, which is termed as osmosis.

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The net diffusion of a solvent, across a semi-permeable membrane, from low to high solute concentration, is the precise definition of: simple diffusion facilitated diffusion active transport passive transport osmosis
Soft contact lenses are made from hydrogels, which make them soft and flexible. It is important to clean them daily using a sterile, isotonic cleaning solution. The concentration of solutes in the cleaning solution is the same as the concentration of the hydrogel in the contact lens. What would happen if instead of an isotonic cleaning solution, soft contact lenses are cleaned with water? (A) The soft contact lenses will shrink because it will remove too much water by osmosis. B The soft contact lenses will shrink because too much water is absorbed by osmosis. The soft contact lenses will swell and change shape because too much water is absorbed by osmosis. The soft contact lenses will swell and change shape because too much water is removed by osmosis.
Which of the following statements is TRUE of diffusion?     Diffusion of particles along the concentration gradient will occur until particles are equally distributed in all areas of the solution.   Diffusion of particles along the concentration gradient will occur until the particles move fully from one side of the solution to the other.   Diffusion of particles against the concentration gradient will occur until random motion            occurs.   Diffusion of particles against the concentration gradient will occur until all the particles have dissolved.       Carl is examining an onion root tip cell under a microscope. Based on his observations, Carl proposes that the onion root tip cell has completed interphase and is now in the first phase of mitosis. Which of the following pieces of evidence would best support Crisanto’s claim?      The cell’s chromosomes are aligned across the metaphase plate.   Separated sister chromatids are being pulled towards…
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license