Outer Onion Essay

Great Essays
INTRODUCTION
Research Question
Is the carbon dioxide emission rate per gram (ppm/s/g) of an outer onion (Allium cepa) layer, greater than the carbon dioxide emission rate per gram (ppm/s/g) of an inner layer?

Scientific Context
Cellular respiration is a catabolic pathway that breaks down complex molecules to more simple ones which release stored energy (World of Biology). The process of cellular respiration produces carbon dioxide (CO₂). It is powered by the oxygen that we take in as we breathe and CO₂ is emitted as we breathe out, which means cellular respiration, is essentially the CO₂ emission rate (Veloz). Cellular respiration has a clear relationship with metabolism in humans. “Respiration is the process that gets oxygen from the air to the tissues of the body and removes carbon dioxide from the body.
…show more content…
The only safety precaution would be to be careful with the knife as one cuts the onion in half. Since this experiment does not deal with chemicals there is no special disposal required.

RESULTS
Results Description
The mean of the CO₂ emission rate per gram (ppm/s/g) of the outer layer is higher than the mean of CO₂ emission rate per gram of the inner layer. Continuing, the error bars do not overlap, meaning that the statistical mean of cellular respiration, like said before, is greater in the outer layer compared to the inner layer. Furthermore, the CO₂ emission rate per gram of the outer layer, is 67.7% greater, than the one of the inner layer.
In my experiment, I noticed two differences treatments or unusual measurements, in the tenth and the fifth trail. The thing that I did not expect was the respiration chambers with the onion pieces to fog up, however, this happened to each of the

Related Documents

  • Improved Essays

    Ap Biology Lab Report

    • 711 Words
    • 3 Pages

    The purpose of this lab is to examine cross sections from the leaves of C3 and C4 plants and to determine the morphological differences between them while relating those differences to their metabolism. In C3 plants the carbon dioxide is first incorporated into a 3-carbon compound. Their stomata are open during the day and photosynthesis takes place throughout the mesophyll cells. In comparison C4 plants, the CO2 is first incorporated into a 4-carbon compound. Their stomata are open during the day and photosynthesis takes place within the inner cells.…

    • 711 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Experiment 10 Crickets

    • 380 Words
    • 2 Pages

    During the experiment, several materials were needed to perform the experiment with ease. Ten crickets were needed and were provided by the teacher of the class. A clear container, including a lid, was also needed to contain the crickets. As well as crickets and a container, the lab required a working computer, with the Logger-Pro application already downloaded onto the computer. Many different devices, such as a carbon dioxide sensor and incubator, were needed to obtain the results of the experiment.…

    • 380 Words
    • 2 Pages
    Improved Essays
  • Decent Essays

    There are differences and similarities about the factors (carbon dioxide and light) that affect the rate of photosynthesis. They’re similar because both increase the rate of photosynthesis when there’s more of…

    • 420 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Introduction Carbon dioxide plays a huge rule on plant growth. This reports points out some positive affects as well as negative aspects of carbon dioxide concentration illustrated through a graph from the three trails. Some positive affect is that if a plant is receiving an average amount of CO2 and water and sunlight, it’ll have a positive affect depending on the type of the plant. The negative affect is if there is an imbalance of one element or if the plant if receiving too much or too little, for example if carbon dioxide in the atmosphere is too high then plants lose water due to the evaporation as the heat increases, also the excess CO2 in plants causes the plant to be less nutrient for human and animal consumption (Zhu 2005). However, the effect of carbon dioxide concentrations varies depending on the type of plant since each plant has different feedback affect and how the plant reacts to the increased level of CO2.…

    • 685 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Respiration is a process, which conducts the circulation of air between the lungs and the external environment. Two main mechanisms involved in the respiration process is the act of inspiration and expiration. Inspiration involves the inhaling of oxygen into the lungs. Expiration involves the exhalation of carbon dioxide into the external environment. Respiration is important to human body because it is a major contributor to speech.…

    • 367 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    In this lab, we should expect changes in the rate of cellular respiration based on the available fuel source in the different seeds. We know that aerobic respiration requires oxygen gas and an organic molecule, and produces carbon dioxide, water, and energy. The goal of cellular respiration is to harvest ATP. However, the carbon dioxide can be measured using a gas sensor. Since we know that more reactants generally equals more products, more organic molecules should result in more carbon dioxide, thus, increasing the rate of cellular respiration.…

    • 536 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Rate of Respiration from Refrigerated, Sprouted Mung Beans; Room Temperature Sprouted Mung Beans, and Moss at Room Temperature, and Yeast? Introduction: The purpose of this experiment was to determine the rates of respiration within refrigerated and non-refrigerated Mung beans. Cellular respiration is the oxidation of glucose molecules (C6H12O6) to produce ATP, CO2, and H2O.…

    • 636 Words
    • 3 Pages
    Improved Essays
  • Superior Essays

    Photosynthesis Lab

    • 1107 Words
    • 5 Pages

    The greenhouse effect would cause the heat produced from the lamp to become trapped underneath the container with the plant. As more heat gets trapped and little heat escapes, the inside of the container gradually becomes warmer. The less volume the container is, the more heat is confined to a smaller area, causing the temperatures in the containers with less volume to become more heated than those with more volume. The plants underneath the smaller containers did better than the plants underneath the larger containers because the smaller containers had higher temperatures, which caused the plants to prosper; not because of the carbon dioxide…

    • 1107 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    Leaf Disk Lab Report

    • 566 Words
    • 3 Pages

    Introduction: Leaf Disk float in water alone. When a solution consisting of a small amount of sodium bicarbonate is added to the water it causes the leaf disk to sink. As photosynthesis continues in the leaf disk it releases oxygen and causes the leaf disk to rise. While cellular respiration is occurring also the rate that the disk raise is an in implicit measurement of the net rate of photosynthesis. The independent variable in this lab is the solution and the light because it can be controlled.…

    • 566 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Carbon Dioxide Classroom

    • 357 Words
    • 2 Pages

    Some possible consequences of high carbon dioxide levels in a room are that it may be the cause for decreased energy levels and produce headaches as well as drowsiness if they are above the recommended level. 5. List at least one researchable question for this experiment Would having more plants placed in a classroom significantly decrease CO2…

    • 357 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Photosynthesis Lab

    • 435 Words
    • 2 Pages

    This process is not only vital to the plants but also for humans and wildlife, as we are reliant on other sources to gain needed amounts of energy to sustain our way of living. If our bodied could not get the need amounts of energy and carbohydrates our organs and vital functions would not have the ability to complete needed processes for life. The purpose of this lab was to see the different changes light color has no the rate of photosynthesis through light intensity and wavelengths absorbed. For this experiment the dependent variable is the rate of photosynthesis and the independent is wavelength and light…

    • 435 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    Yet the experiment gave out the 3 minute interval rule. Correct hypothesis: More amount of time under the light will cause the plant to give out more glucose and O2. During the experiment, I learned the role of Sodium Bicarbonate and that photosynthesis can happen very…

    • 602 Words
    • 3 Pages
    Improved Essays
  • Great Essays

    Tree Philly Speech Outline

    • 1166 Words
    • 5 Pages

    Tree Philly A program of Philadelphia parks and recreation. Introduction: Main idea: The purpose or main idea of my speech is to peruse you for volunteering Tree Philly.…

    • 1166 Words
    • 5 Pages
    Great Essays
  • Improved Essays

    Determining The Process of Photosynthesis And Cellular Respiration Using Elodea and Yeast Introduction Photosynthesis is an essential process to life on earth, in which plants and other organisms use sunlight to create food from oxygen, and carbon dioxide. Cellular respiration is when energy in food is released and converted to ATP, which is then used as chemical energy to complete tasks within a cell. This process usually requires oxygen and releases carbon dioxide. Photosynthesis and cellular respiration are similar in some areas and different in others. The purpose of both of the process is to produce energy, but they have different ways of achieving this goal.…

    • 1180 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    The easiest way to explain transpiration is to think of it as plant evaporation. Transpiration as a whole is the general cycle for water regarding plants, this includes the movement of water throughout the plant itself and the movement of water leaving the organism. However, most definitions of transpiration focus on aerial parts such as the stomata on the leaves. The adhesion and cohesion of water is something very important to life.…

    • 896 Words
    • 4 Pages
    Improved Essays