The Effect of Osmosis on a Potato Cell October 12th 2012 Osmosis Lab Purpose: The purpose of this lab is to investigate the effects of osmosis on a potato cell as it is immersed for a period of time in solutions of different water concentrations. Hypothesis: If the potato is immersed into the distilled water‚ then it will be the heaviest out of the three. This is because water is at the lower is moving toward the area of higher concentration‚ which in this case is the potato. This
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(inches or centimeters) Distance: ¾ full (inches or centimeters) A to B 3.5 5 9 13 A to C 4 4 9 13.5 A to D 3.5 5.5 12 17.5 B to C 4 4 8.5 13 B to D 2 2.5 5 7.5 C to D 3 3.5 5.5 10.5 Analysis: Answer the following questions in complete sentences. Include the answers in theAnalysis and Conclusion section of your lab report. 1. How does the density and distribution of your “stars” change as the balloon expands? When the balloon is not inflated‚ the “stars” are closer together. Thus‚ they
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Name_____________________ Section____________Date___________________ Lab Assessing Your Current level of Cardiorespiratory Endurance Cardiorespiratory endurance- is the ability of the body to perform prolonged‚ large-muscle‚ dynamic exercise at moderate-to-high levels of intensity. The 3-Minute Step Test I. How to Assess Your Cardiorespiratory endurance 1. Warm up before taking the test. Do some walking‚ easy jogging‚ and stretching exercises. 2. Practice stepping up onto and down
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Use this document to report your findings from the LeafLab Exploration Experiment. The lab report consists of three sections: Data‚ Exploration‚ and Lab Summary. Data: copy any data‚ graphs‚ charts‚ or notes that you have saved in your LeafLab online notebook into this section. Exploration: Answer the questions. The questions in the Exploration section are the same questions in your LeafLab instructions. Lab Summary: Write a 100- to 200-word summary. Data To copy your data from your online
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Lab 6 Experiment 2 1. It is important that bass caught and marked are returned to the lake unharmed because if they are harmed them they are less likely to be caught again or they may end up dying if they are returned harmed. 2. I don’t this type of population would be easier to count directly because I don’t think it would be possible to catch all of the bass in the population to conduct this experiment. 3. I think that sample size is relative to population density and will positively
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points of water‚ 10% antifreeze‚ and 20% antifreeze utilizing an ice bath and a really cool thermometer. Apparatus Procedures Preparing the Ice Bath 1. Fill the tub ¾ full with ice. 2. Cover the ice with a respectable amount of salt. 3. Add water and stir that bad boy‚ the water should be standard temperature in a fwe minutes. Fill the test tube with any amount of water and submerge promptly *Check the test tube every few seconds until frozen. Record temperature. Repeat with both
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Student’s Name Date of Experiment- 11/27/12 Date Report Submitted 11/27/12 Title: Caloric Content of Food Purpose: to be able to measure the energy content of foods Procedure: We are going to take food items and burn them to heat water to be able to determine the amount of “energy” a food source can emit. Data Tables: |Data Table 1: Food Item - Observations
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CHM1032L pre/post lab instructions Preparation is a key to success in this lab. For this reason‚ you are required to thoroughly read through the experiment information presented in the lab manual‚ and complete a pre-lab for each experiment you do. The prelab must be completed prior to the day of the experiment. Each Friday I will ask to see your completed prelab before I allow you to enter the lab. If you have not finished the pre-lab‚ I will not allow you to enter the lab and you will receive
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Safety Concerns in the Laboratory Safety goggles must be warn at all times during a lab session. This is very important because they protect your eyes from harmful matter such as chemicals‚ glass‚ and fumes. It is very important to note that they must be goggles and not glasses. Safety glasses may protect the eyes from flying debris and splashes but may not protect the eyes from gas fumes or splashes from underneath. Also‚ wearing contact lenses in a chemical laboratory without proper coverage
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The completed calculations can be found on lab notebook page 14. Using this data‚ graph 2 was generated showing the relationship between the intensity ratio and the concentration of chlorine. Relating to the Stern-Volmer equation of F0/F=1+KSV[Q] and the linear line equation of y = 124x + 1.08‚
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