Preview

AP Biology Lab: Cellular Respiration

Powerful Essays
Open Document
Open Document
1577 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
AP Biology Lab: Cellular Respiration
AP Bio p. 6
December 8, 2011
AP Biology Lab 5: Cellular Respiration
Introduction/Lab Objective:
In this lab we are testing how the process of cellular respiration is affected by temperature, and also how it is different between germinating and non-germinating peas. Cellular respiration is a catabolic process (breaks down organic material into usable cell energy) that produces ATP. The electron receivers are inorganic. Cellular respiration releases energy from organic material through chemical oxidation within the mitochondria of cells. Cellular respiration usually refers to the metabolizing of glucose, however carbohydrates, proteins and fats can also be metabolized.
C6H12O6 + 6O2 → 6CO2 + 6H2O + 686 Kcal of energy/mole of glucose oxidized …show more content…
|Corr. Diff. |Reading |Diff. |Corr. Diff |Reading |Diff. | |18 |0 |.80 |- |- |1.10 |- |- |.65 |0 | |18 |5 |1.45 |-.65 |-.65 |1.10 |0 |.05 |.70 |-.05 | |18 |10 |1.75 |-.95 |-.90 |1.10 |0 |.05 |.70 |-.05 | | |15 | | | | | | | | | | |20 | | | | | | | | | | |25 | | | | | | | | | | |30 | | | | | | | | | |Vials 4-6
8 |0 |1.65 |- |- |1.05 |- |- |.90 |- | |9 |5 |1.65 |0 |.1 |.8 |.25 |.35 |1 |-.10 | |9 |10 |1.25 |.4 |.4 |.5 |.55 |.55 |.90 |0 | | |15 | | | | | | | | | | |20 | | | | | | | | | | |25 | | | | | | | | | | |30 | | | | | | | | | | | | | | | | | | | | |[pic]
Data analysis:
In this lab the vials with beads only serve as a control, because the beads do not go through cellular respiration. With the data from vials 1-3 we can see that the dye travelled the most in the respirometer with germinating peas, this is because in cellular respiration germinating peas require the most oxygen to survive and grow. The dye is travelling because as the oxygen is being consumed by the peas, the oxygen is being taken out and the pressure within the respirometer decreases; pulling the dye towards the respirometer. While non-germinating peas are also alive, they currently require much less oxygen to survive. In vials 4-6 from what I see looking at the non-germinating peas, the readings are smaller, meaning in a cold temperature …show more content…
We can also see the differences in cellular respiration between germinating and non-germinating peas. In our lab the main error made was that I accidentally bumped the chilled water tray, moving the respirometers equilibrating inside the tray, therefore resulting in botched results.

CELLULAR RESPIRATION ASSESSMENT QUESTIONS 1. The rate of oxygen consumed by germinating peas increases over time (at least in 1 of out data sets), meaning that they require a lot of oxygen to survive. 2. Three controls used in this lab are the temperatures of the water baths, the amount of KOH added to the vials, and the time intervals in which we recorded rates of oxygen consumption. 3. The water initially moved into the respirometer because we had to fully submerge the respirometer. I don’t think we could have avoided some water getting inside the graduated pipet. 4. The role of KOH is to prevent the release of CO2, but K2CO3 we see at the bottom of the respirometers. Without CO2, we can accurately measure how much oxygen is being used without the release of CO2 effecting those readings. 5. The KOH absorbs the CO2, therefore affecting the volumes within the
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Good Essays

    Cellular Respiration
    • 605 Words
    • 3 Pages

    Cellular Respiration

    Cellular Respiration Lab Report Wednesday 8:00 A.M. Lab March 2nd, 2005 I. Introduction In this lab we are measuring the amount of oxygen used in both germinating and non germinating peas. We are measuring the oxygen consumption by taking a reading of a respirometer submerged in two water baths. The first bath will be cold water and the second warm to determine the effect of temperatures on oxygen consumption. Our negative control will be glass beads to measure to increase or decrease in atmospheric pressure or temperature changes. There is a direct relationship between oxygen consumption and Carbon Dioxide produced, therefore the more O2 consumed the more CO2 produced. To keep the amount of CO2 produced from canceling out any pressure gained or lost from the consumption of CO2 we are adding KOH(Potassium Hydroxide) to the respirometers. Since the CO2 will be selectively removed the change in the volume of gas in the respirometer should be directly related to the oxygen consumed. In this experiment the germinating peas, in both water baths, should consume much more oxygen than the non-germinating peas or the glass beads, because germination has began thus accelerating cellular reactions and the rate of respiration. The cold water bath should slow the respiration down in all three respirometers.…

    • 605 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Dry Peas Lab Report
    • 495 Words
    • 2 Pages

    Dry Peas Lab Report

    .01 20 .84 .01 .005 .665 .655 .84 .02 .01 Respiration in Beads, Germinating Peas, and Dry Peas Using Respirometers…

    • 495 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    CHM130 Lab 6
    • 1556 Words
    • 6 Pages

    CHM130 Lab 6

    2. What was the control used during the liquid portion of Part I of this experiment? (8 pts) (Hint: What did you do the same with each liquid to ensure a fair comparison?)…

    • 1556 Words
    • 6 Pages
    Good Essays
    Read More
  • Better Essays

    Cellular Respiration Lab Report
    • 1719 Words
    • 7 Pages

    Cellular Respiration Lab Report

    Introduction Cellular Energetics is the broad term that encompasses both cellular respiration and photosynthesis and refers to how energy changes and reacts within cells. Cellular respiration is the process by which cells break down sugars (ATP) in order to produce energy for other chemical reactions. Cellular respiration takes place mainly in the mitochondria and the reactants in this process are oxygen and glucose and the main product in this process is ATP as well as waste products which include carbon dioxide and water. Almost all organisms perform cellular respiration. There are two types of cellular respiration…

    • 1719 Words
    • 7 Pages
    Better Essays
    Read More
  • Powerful Essays

    Ap Bio Lab 5: Cell Respiration
    • 1940 Words
    • 8 Pages

    Ap Bio Lab 5: Cell Respiration

    | AP Biology Lab #5: Cell Respiration | | | | | | Brian Suarez…

    • 1940 Words
    • 8 Pages
    Powerful Essays
    Read More
  • Good Essays

    Cell and Cellular Respiration
    • 2022 Words
    • 9 Pages

    Cell and Cellular Respiration

    Photosynthesis Chemical Reaction for photosynthesis: Water + Carbon dioxide à Glucose + Oxygen 6H2O + 6CO2  C6H12O6 + 6O2…

    • 2022 Words
    • 9 Pages
    Good Essays
    Read More
  • Better Essays

    Standardized Acid Titration
    • 1661 Words
    • 7 Pages

    Standardized Acid Titration

    Methods and Materials Week One: the experiment started off by preparing 250mL of NaOH solution. About 0.5 grams of NaOH were measured and then inserted into a 250mL volumetric flask. Once the NaOH was in the flask, it was then filled up to the 250mL line using deionized water. After the water was put in the flask, the solution was then mixed well until the NaOH dissolved well in the water. The second solution that was prepared was KHP. This was done by measuring 1 gram of KHP. After that was completed, the KHP was put in a beaker and filled up using 50mL of demonized water and mixed well until the KHP dissolved well in the water. Three drops of the indicator phenolphthalein were put in the KHP solution.…

    • 1661 Words
    • 7 Pages
    Better Essays
    Read More
  • Satisfactory Essays

    Bio Lab 1
    • 282 Words
    • 2 Pages

    Bio Lab 1

    Lab 1 : Scientific Method 20 Table 2: Water quality vs. fish population 1. Based on the information in Table 2, (in the lab manual) what patterns do you observe?…

    • 282 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Seed Germination EEI
    • 1144 Words
    • 5 Pages

    Seed Germination EEI

    Germination in plants is the process in which dormant seed begins to grow and sprout under certain growing conditions. The English pea, also known as the garden pea, is a member of the legume family and is known to grow roughly three to four inches long. Research shows that it only takes approximately 1 week for the seed to start to germinate. There are many things that can affect, the growth of the pea seed such as; temperature, moisture, planting depth and sunlight. The pea grows best in temperatures between 7˚C -14˚C, any lower or higher temperatures may affect the seed germination. Often it is recommended for the seed to firstly be planted indoors, where there is a controlled environment. Similar to most living things the English pea needs moister to survive. Pea seeds deprived of water shrivel and die, while those that receive too much water become water-logged and start to decay. Proper watering ensures that the soil around the bases of the pea vines is damp but not saturated, with additional watering scheduled during dry weather.…

    • 1144 Words
    • 5 Pages
    Good Essays
    Read More
  • Good Essays

    Cellular Respiration in Peas (Germinating and Non-Germinating)
    • 655 Words
    • 3 Pages

    Cellular Respiration in Peas (Germinating and Non-Germinating)

    Biology 101 1 November 2013 Cellular Respiration in Peas Part A: Abstract: This report examines Cellular Respiration and its functions as well as its function in germinating and non-germination peas. Cellular Respiration can best be described as a complicated string of chemical reactions. The complete Cellular respiration process begins with Glucose being oxidized, and the potential energy is transferred to the ATP molecule. The ATP molecule is now free to supply energy to the various processes within the cell. Water and Carbon dioxide are released during the process. This experiment aimed to conclude whether or not non-germinating peas are undergoing Cellular Respiration before they begin germination. This particular experiment required the following equipment: A thermometer, an Oxygen gas sensor, and a Carbon dioxide gas sensor. Temperature was also a factor in this experiment, as the effects of temperature on the rate of Cellular Respiration was also under study. The conclusion(s) of the study was/were as follows: Germinating peas experience Cellular respiration at a much faster rate than non-germination peas (however, non-germinating peas do undergo cellular respiration, but a much slower rate); it was also found that cooler temperatures affect the rate of respiration by slowing the process down.…

    • 655 Words
    • 3 Pages
    Good Essays
    Read More
  • Powerful Essays

    Lab 5 Cellular Respiration
    • 3401 Words
    • 14 Pages

    Lab 5 Cellular Respiration

    C6H12O6 + 6O2 → 6CO2 + 6H2O + 686 kilocalories of energy/mole of glucose oxidized…

    • 3401 Words
    • 14 Pages
    Powerful Essays
    Read More
  • Satisfactory Essays

    Photosynthesis and Cellular Respiration Biology Lab Report
    • 342 Words
    • 2 Pages

    Photosynthesis and Cellular Respiration Biology Lab Report

    5. Why are photosynthesis and cellular respiration viewed as complementary processes? They are complementary process because they both need the same components, water, energy, carbon dioxide, and glucose.…

    • 342 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Cellular Respiration
    • 779 Words
    • 4 Pages

    Cellular Respiration

    Cellular Respiration My hypothesis for the germinated pea experiment was that the level of aerobic respiration would increase as the temperature would increase. I also predicted that there would be an upper temperature limit. The experiment proved part of my hypothesis correct and part of it incorrect. I was correct in predicting that the rate would increase as the temperature increase, but I was incorrect in hypothesizing that there would be an upper limit. My hypothesis for the larvae experiment was that the level of aerobic respiration would increase as the temperature increased and there would be an upper temperature limit. My hypothesis was proved to be correct, for the rate of respiration continued to increase until the upper limit was hit and the rate started to decline. There were no unexpected results from our group, but I noticed that group six had some unexpected data in the class larvae table. The only explanation I can make out of it is that the group made a math error. I do not have any suggestions to make this experiment better. Other factors that can affect the rate of cellular respiration are amount of available nutrients, because this allows more energy to be produced from the cell with an increase in amount of nutrients. Another factor is the state of the cell, such as the difference between working and dormant cells or the difference between plant and animal cells.…

    • 779 Words
    • 4 Pages
    Good Essays
    Read More
  • Good Essays

    Lab 5 Cellular Respiration Lab
    • 549 Words
    • 3 Pages

    Lab 5 Cellular Respiration Lab

    7. Germinating seeds have an increased metabolic rate, which in turn needs more oxygen. The non-germinating peas are smaller and barely alive, so they only need a little bit of oxygen to live.…

    • 549 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Sci 230 Essay Example
    • 897 Words
    • 4 Pages

    Sci 230 Essay Example

    Cellular respiration is the metabolic process that releases stored energy from the bonds of organic molecules, mainly glucose. There are three stages:…

    • 897 Words
    • 4 Pages
    Good Essays
    Read More