TAMU BIOL 111 - 2PropertiesOfWater091017 (32 pages)

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2PropertiesOfWater091017



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2PropertiesOfWater091017

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Pages:
32
School:
Texas A&M University
Course:
Biol 111 - Introductory Biology I

Unformatted text preview:

Lab Safety Biology 111 Lab 2 Properties of Water Osmosis Gloves goggles and closed toed shoes are required Bags purses backpacks must be hung on the bench hook DO NOT open the demonstration petri dishes containing potassium permanganate I will be the ONLY person to handle these dishes Dispose of Lugol s solution in the BASE waste container DO NOT fill waste containers past the indicated lines Keep containers closed when not in use No food or drink in lab Lab 2 Properties of Water Osmosis Whitney wroberson bio tamu edu Help Desk Hours M 8 9am W 9 10am or by appointment Reminders Lab Safety Forms Paper one and Howdy one Goggles If you do not have them Bring me your ID 1 Point has been deducted from your TA Points Closed Toed Shoes If you do not have them Bring me your ID 1 Point has been deducted from your TA Points Timeline Quiz 1 15 mins Lab 2 Intro 20 mins Lab Logistics Safety 5 mins Diffusion Across a Plasma Membrane and Part 2 Understanding pH 2535 mins Water is a solvent 5 mins Properties of Water 10 mins Oil and Vinegar Exp pg 24 5 mins Plasmolysis live Paramecium 20 minutes Analyze Data Clean Up 20 mins Summary 20 mins Potassium Permanganate Demo Will be announced by TA during lab take measurements every 5 mins Objectives Examine and describe the unique properties of water Use three different methods to test the pH of common household products Draw the structure of the plasma membrane and describe four ways substances enter and leave cells Differentiate between diffusion and osmosis Differentiate between passive and active transport Conduct an experiment to test the factors that affect diffusion across a selectively permeable membrane Conduct an experiment to determine water potential in plant cells Water is a Polar Molecule What is a Polar Molecule Hydrogen bonds form between positively charged H atoms and negatively charged atoms Covalent bonds share electrons within a molecule This bond is very strong Tension Cohesion Capillary Action The way plants pull



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