was undertaken in order to observe the effects of changing the temperature of the solution that a potato cube is placed in. The temperatures that were tested in this investigation were 0°C‚ 20°C (room temperature)‚ and 70°C. This investigation tested the hypothesis: The rate of osmosis will increase as the temperature increases 2x2x2cm cubes of potato were weighed and then placed into 100mL of 10% NaCl solutions for 10 minutes. After 10 minutes the cubes were again weighed to determine the amount
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isotonic. In Cylinder (A) the mass decreased‚ so liquid was released from the potato‚ because the cells in the potato would have burst if even more was absorbed‚ whereas the length stayed the same. In Cylinder (B) the mass and length increased‚ which means the potato cells absorbed some Sodium Chloride (NaCl)‚ so the cells don’t shrivel up and die. For Cylinder 3 the mass and length also increased‚ like cylinder (B). The potato cells would have shrivelled up if water was released‚ so by absorbing more
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mass. To begin this experiment we filled 5 dialysis tubings with one of the five substances: water‚ egg white‚ NaCl‚ glucose‚ or sucrose. The equipment used was: 5 dialysis tubing‚ a scale‚ bekers‚ water‚ egg white‚ sucrose‚ glucose‚ NaCl‚ and 5 cups. We put the five dialysis tubing filled with one of the five substance into a cup filled with one of the substance: water‚ egg white‚ NaCl‚ glucose‚ or sucrose. Then we let them sit in there for 30 mins then took them out of the cups and remassed them
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Drowning‚ also defined as a respiratory impairment caused by being in or under a liquid‚ restrains one’s intake of oxygen. The lack of oxygen prevented from being distributed throughout the body causes it to slowly shut down then the victim will eventually go unconscious and sometimes die. Although drowning restricts one’s breathing‚ drowning in freshwater‚ and drowning in salt water will react in the body in two completely different ways (Helmenstine‚ “Drowning in Freshwater). The simple difference
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Experiment 2 : Transport Across Membrane Name : Matrix No : Group : B Semester : 1 Date of Experiment : 05.09.2013 Lecturer’s Name : Miss OBJECTIVE To study the effects of hypotonic‚ hypertonic and isotonic solutions on plant and animal cells. INTRODUCTION In cellular biology the term membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes‚ which are lipid bilayers
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(Solute concentration) of a Potato? ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- Design ------------------------------------------------- ------------------------------------------------- 1. What is the dependent variable for this experiment? ------------------------------------------------- The dependent variable is the concentration (solute) of the potato. -------------------------------------------------
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that affects the rate of osmosis in a potato: * Time * Temperature * Molar * Sucrose solution * NaCl solution * Concentration of liquid * Age of the potato * Variety of the potato * Potassium‚ K(AQ) Factor Chosen: Different Molar of Sucrose Solution In this investigation I will change the molar of sucrose solution to find the increase or decrease in mass change and also the higher or lower the mass change of the potato chip from its original weight will determine
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Living a Salty Life‚ http://www.lucasbrouwers.nl/blog/2009/11/living-a-salty-life/‚ date viewed: 10/03/13 Osmosis and The Water Potential of a Potato‚ http://biology.clemson.edu/bpc/bp/lab/110/osmosis.htm‚ Robert. J. Koninski‚ last update: October 2012‚ date viewed: 04/03/13 Potato in Osmosis Core‚ http://biology.clemson.edu/bpc/bp/Lab/110/handouts/Potato%20Osmosis%20OMP.pdf‚ date viewed: 02/03/13
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Title: Screening of Cellulolytic Activity of Locally Isolated Thermophilic Fungi Title : Screening of Cellulolytic Activity of Locally Isolated Thermophilic Fungi Objective : To screen for thermophilic fungi as producer of fungal cellulase. Introduction One of the most important sources of carbon that is abundantly found on this planet is cellulose. While cellulase is the enzyme to degrade this carbon and it is a key enzyme in the bio refinery process of producing green chemicals
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potential to solute concentration and water potential [NOTE: You may want to look over Lab 1a to refresh your memory!] EXERCISE 1b-A: DETERMINING THE WATER POTENTIAL OF POTATO CELLS In this exercise you will use potato cores placed in different molar concentrations of sucrose in order to determine the water potential of potato cells. First‚ however‚ we will explore what is meant by the term "water potential." Water Potential. Water potential is abbreviated by the Greek letter psi (ψ). Water potential
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