Preview

Lab 5 Cellular Respiration Lab

Good Essays
Open Document
Open Document
549 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Lab 5 Cellular Respiration Lab
AP BIOLOGY Lab 5 Cellular Respiration

Objective: To calculate the rate of CR from the data. To then relate gas production to respiration rate. Then test the rate of CR in germinating versus non-germinating seeds in a controlled experiment and then test the effect of temperature on the rate of CR in the germinating versus non-germinated seeds in a controlled experiment.

Analysis:

1. The CR is higher in the germinating peas in the cold water rather than in the beads or non-germinating peas. The cold water probably slowed the process of CR in both germinating and non-germinating peas.
2. The conditions that must remain constant are: the water baths, the same amount of KOH, the same amount of time for equilibration, the same time measurements, and using glass beads as the control. These must remain the same to ensure
…show more content…
See Graph 5.1.
4. Over the time allotted, there was a slow increase of O2 consumed over the time span.
5. See Table 5.2.
6. The glass beads cannot produce gas, so it served as a control, due to no change in the volume of gas.
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.
8. See Graph 5.2. I think the graph will rise to a max peak of 40 C, where it’ll consume the most, then begin to decline as the heat increases past 50 C.
9. It was used to absorb excess CO2 and to make it precipitate at the bottom of the vial, so as to avoid any disruptions with the readings.
10. The stopper was simply put to keep what is in is in and what is out is out, i.e. gas in, water out.
11. I think respiration would be much higher in the mammal because they are warm blooded and in turn, endothermic.
12. Since the entire contraption was under water, the oxygen originally inside the vial was consumed by the peas, and the CO2 discharge was absorbed by the KOH. Water moves in because of the lack of gases in the

You May Also Find These Documents Helpful

  • Powerful Essays

    Nt1330 Unit 2 Lab Summary

    • 1237 Words
    • 5 Pages

    To open the spores and allow the dye to enter and stain. Once cooled down the spores closed trapping the dye inside.…

    • 1237 Words
    • 5 Pages
    Powerful Essays
  • Good Essays

    out of carbohydrate reserves to use as fuel. Draining the carbohydrate levels and reserves of your…

    • 516 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    beaker. Three trials were done and measurements were recorded. The purpose of the second experiment…

    • 671 Words
    • 5 Pages
    Satisfactory Essays
  • Satisfactory Essays

    EARLY CELLS

    • 341 Words
    • 1 Page

    The bubbles where forming on the surface of the shell because of the vinager. Those be CO2. That lab was an example of cellular transport.…

    • 341 Words
    • 1 Page
    Satisfactory Essays
  • Powerful Essays

    Funnel: This piece of equipment was added to the top of the burette and it was used to channel the sodium hydroxide solution into the burette. The mouth of the burette was too small to pour the sodium hydroxide…

    • 1424 Words
    • 5 Pages
    Powerful Essays
  • Satisfactory Essays

    Germination and Beans

    • 326 Words
    • 2 Pages

    1. Think of 10-20 variables that may affect seed germination, recording them in Table 3.…

    • 326 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    cellular respiration lab

    • 396 Words
    • 2 Pages

    The purpose of this experiment was to determine the effect of body mass and temperature on the rate of respiration in the mouse.…

    • 396 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Every cell needs a source of energy in order to perform their daily functions. However the process to get this energy is different for plant and animal cells. Plants cells undergo a process called photosynthesis where light energy from the sun is used to convert carbon dioxide and water into glucose and oxygen. For animal cells, the process is known as cellular respiration by which cells break down complex molecules, such as sugars, to release carbon dioxide. The complex chemical reactions of photosynthesis and cellular respiration help meet the energy needs of living things. (Cellular Respiration) In this experiment you will be testing the amount of carbon dioxide and oxygen produced or consumed during photosynthesis…

    • 816 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    This double chambered respirometer, allows you to measure the pressure changes, due to the presence of a control tube.…

    • 360 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    and then blew carbon dioxide into those different types of water through a straw. The…

    • 709 Words
    • 4 Pages
    Powerful Essays
  • Good Essays

    Seed Germination EEI

    • 1144 Words
    • 5 Pages

    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
  • Good Essays

    6. Explain the purpose of each of the following with regard to transpiration. (6 pts)…

    • 907 Words
    • 6 Pages
    Good Essays
  • Good Essays

    Cellular respiration is the process that mainly important in our daily life and supply energy to your body. The main purpose is to turn food into usable chemical energy called ATP. Your body can use ATP as a source of energy to function. Cellular respiration is also the procedure by which cells in plants and creatures separate sugar and transform it into energy, which is then used to perform work at the cell level. The reason for cell breath is straightforward: it gives cells the vitality they have to work.…

    • 514 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    2.This activity uses a number of controls. What conditions must be kept constant?.
Water baths held at constant temperature
Volume of KOH is the equal in every tube
Equilibration time is identical for all respirometers.…

    • 1687 Words
    • 7 Pages
    Powerful Essays
  • Good Essays

    Controlled: the same type of beaker as the mass of the beaker is never changed…

    • 951 Words
    • 4 Pages
    Good Essays

Related Topics