Cellular Respiration Lab - Cellular Respiration Lab Jennie...

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Cellular Respiration Lab Jennie Chang Period 6 / / 12 8 11 AP Biology
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Background info: Aerobic cellular respiration is the release of energy from organic compounds by metabolic chemical oxidation in the mitochondria within each . , , cell Cellular respiration the most efficient pathway for producing ATP involves - . , a series of enzyme mediated reactions Green plants respire at all times like . most living organisms Seeds are dormant stages of living organisms and grow . , into plants when conditions are right Before they grow into plants the seeds . must germinate Germination is a precarious time in a plant life cycle because . . , of all surrounding conditions Seedlings are fragile To germinate seeds absorb , . water which they need in order to mobilize their food reserves using enzymes Then they speed up their rate of respiration dramatically and thus use the . , energy released in order to sprout However many seeds spend much of their . , lifetime in dormancy Because seeds are produced in high numbers only so . many seeds can viably thrive Environmental factors affect timing and success . of germination Using a respirometer enables one to measure the amounts of ( ) . . gases oxygen in this lab used in respiration A respirometer utilizes gas laws = , , PV nRT where P is the pressure of the gas V is the volume of the gas n is , ) ), the number of molecules of gas R is the gas constant its value is fixed and T ( is the temperature of the gas in ° ). K Purpose: The purpose of this lab was to calculate the rate of cell respiration , , from experimental data relate gas production to respiration rate test the rate of cellular respiration in germinating versus nongerminated seeds in a controlled , experiment and test the effect of temperature on the rate of cell respiration in . germinating versus nongerminated seeds in a controlled experiment Materials: 25 o C bath 100mL graduated cylinder Water 25 germinating peas 25 dried peas Glass beads 3 respirometers 3 vials 3 stopper 3 pipette Cotton KOH Sling Masking tape Thermometer
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Procedure: . - 1 A room temperature bath should be set up to allow time for temperature to . adjust . 2 : Respirometer 1 Obtain a 100ml graduated cylinder and fill with 50ml of
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This note was uploaded on 01/09/2012 for the course BIO 87 taught by Professor Bio during the Spring '10 term at Aachen University of Applied Sciences.

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Cellular Respiration Lab - Cellular Respiration Lab Jennie...

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