Preview

Cellular Respiration Lab Report

Better Essays
Open Document
Open Document
1719 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Cellular Respiration Lab Report
Cellular Energetics: The Rate of Cellular Respiration and Photosynthesis over Time Among Various Variables
By: Ethan Barnett
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
…show more content…
Cellular respiration includes the processes of glycolysis, krebs cycle, and the electron transport chain. Glycolysis is used to convert glucose to produce two pyruvate as well as 4 ATP’s and 2 NADH but uses 2 ATP to have a net product of 2 ATP and 2 NADH. The krebs cycle converts pyruvate to Acetyl CoA, which produces 2 ATP,8 NADH, and 2 FADH’s per glucose molecule. Electron transport Chain is the last and most important step of cellular respiration, it makes ATP with the movement of electrons from high energy to low energy that makes a proton gradient which makes ATP, this cannot occur unless oxygen is present. Fermentation is an anaerobic process in which converts sugars into acids, alcohol, or alcohol. This process occurs in yeast and bacteria as well as muscle cells that have no oxygen left. In yeast fermentation produces ethyl alcohol and carbon dioxide from glucose and fructose. Fermentation in bacteria cells the process of fermentation produces ethanol, while in human muscle cells fermentation produces lactic acid in cells that have a short …show more content…
The carbohydrate with the highest rate of cellular respiration was glucose followed by fructose, honey, sucrose. Lactose, galactose, and water all had the same final rate of cellular respiration. Figure 1. The rate of cellular respiration over time in the carbohydrate compounds glucose, fructose, lactose, galactose, sucrose, honey, and water. The final absorbance rates for glucose was 1.8, fructose 1.7, lactose 0.6, galactose 0.6, sucrose 1.5, honey 1.6, and water 0.6.
In the second experiment we measured the rate of photosynthesis through different colored light filters, the results were for the most part as expected, but a bit off due to human error. The color with the highest rate of photosynthesis through the production of oxygen was the clear (control), next was red, then blue, and finally green. These results are somewhat the expected outcome for the different colors, although not exactly.

Figure 2. The rate of photosynthesis in elodea plants with different color light filters which include clear, red, blue, and green. The color that produced the highest rate of photosynthesis was clear at .48, then red at .28, and finally green at

You May Also Find These Documents Helpful

  • Good Essays

    Black-Eyed Peas Lab Report

    • 1068 Words
    • 5 Pages

    Organisms need some sort of energy to facilitate their growth and development. Usually, this energy is in the form of adenosine triphosphate, or ATP. Cellular respiration is the process that synthesizes ATP through the three main steps of glycolysis, the citric acid cycle, and oxidative phosphorylation. Essentially, the sugar glucose is obtained by an organism and put through several stages within the three main steps previously mentioned. In oxidative phosphorylation, electrons are passed from a set of proteins called…

    • 1068 Words
    • 5 Pages
    Good Essays
  • Good Essays

    NADH is more efficient, therefore if they are the ones shuttling the energy, the total ATP production will be closer to 32. While the first step of cellular respiration (Glycolysis) is a catabolism of carbon molecules, photosynthesis’s last step of the calvin cycle is anabolism of carbon molecules. Cellular respiration starts with Glycolysis in the cytosol, splitting the six carbon molecule into two pyruvate molecules, each consisting of three carbons. This process requires two ATP’s and eventually generates four ATP’s which results in a net of two ATP’s. Glycolysis also gains two NADH’s which are then shuttled as two FADH. NADH and FADH are high energy molecules that help make ATP. The next step is the Kreb cycle where each pyruvate is brought to the inner mitochondrial membrane and gives off NADH, FADH, and a little ATP. The next step is oxidative phosphorylation where electrons go through the electron transport chain and H+ protons are pumped out. The source of energy and source of electrons are carried by FADH and NADH from glucose. A concentration gradient is formed between the intermembrane space and inner…

    • 528 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Cellular respiration is a process that releases chemical energy from glucose and other carbon-based molecules to produce ATP when oxygen is present. The formula for cellular respiration is C6H12O6+ 6O2= 6CO2= 6H2O. The process of respiration contains three main parts, glycolysis, Krebs cycle, and the Electron Transport Chain. The process of glycolysis takes place in the cytoplasm and is considered an anaerobic process which splits glucose into two three-carbon molecules and makes two molecules of ATP. The Krebs cycle takes place in the interior space of the mitochondria and gives off carbon dioxide as a waste product when sugars are broken down. The Electron Transport Chain takes place in the…

    • 366 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    In this lab the effects of different substrates on the rate of cellular respiration is being put to a test which is a very interesting experiment. The three major substrate solutions being used for this experiment are glucose, maltose, and alanine. The issues this experiment addresses are cellular respiration occur in different stages which are glycolysis, citric acid cycle, and fermentation. In this lab the experiment determines the effect of different substrates on rate of cellular respiration. Maltose would result in the greatest rate of cellular respiration the rationale is because it gives more carbon than others. Glucose would be a good alternate and result in the second best rate of cellular respiration…

    • 595 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Cellular respiration is “the oxidation of organic compounds that occurs within cells, producing energy for cellular processes.” Glucose is oxidized to form carbon dioxide while the oxygen atoms are reduced forming water. These redox reactions happen to synthesize ATP from ADP and Pi. The formula shown here: C6H12O6 + 6 O2 →6 CO2 + 6 H2O + energy, where it is glucose + oxygen to become carbon dioxide, water, and ATP. Cellular respiration is measure in this lab by the oxygen consumed when using a respirometer. The pressure changes in the respirometer are proportional to the oxygen consumed. This is because CO2 is removed by the potassium hydroxide…

    • 109 Words
    • 1 Page
    Satisfactory Essays
  • Satisfactory Essays

    Cellular respiration is the process that release energy by breaking down glucose and other food molecules in the presence of oxygen. There are three steps I the process of cellular respiration: glycolysis, the Krebs cycle, and the electron transport chain. Glycolysis is the process breaking one molecule of glucose in half, producing two molecules of pyruvic acid. If oxygen is present respiration will continue in the mitochondria. If oxygen is present or there is not enough to continue fermentation will take place. Fermentation release energy from food molecules by producing ATP and other byproducts in the absence of oxygen. There are two types of fermentation: lactic acid fermentation, and alcoholic fermentation. Alcoholic fermentation forms…

    • 122 Words
    • 1 Page
    Satisfactory Essays
  • Good Essays

    Cellular respiration is a very complex process that consists of many steps that take place inside the cell, in an organelle called a mitochondrion. Mitochondria are responsible for converting digested nutrients into the energy-yielding molecule adenosine triphosphate (ATP) to fuel the cell's activities. This function, known as aerobic respiration, is the reason mitochondria are frequently referred to as the powerhouse of the cell. There are two types of respiration that occur in cells to produce energy. When oxygen is available in the cell, aerobic respiration, as mentioned previously, occurs. When oxygen is not readily available, anaerobic respiration occurs.…

    • 393 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Six substrates were used. They were the following with the volume of carbon dioxide they produced in cm3. Sucrose –34.35, fructose –33.84, glucose –31.81, starch –1.57, and both lactose and distilled water got zero. Some substrates have simple compositions and are easy to break down unlike while some have complex compositions and are hard to break down during the process of respiration. With the conditions that some sugars still need to be hydrolyzed, the hypothesis “If the nature of substrates affects the cellular respiration in yeast, then the simpler the substrates the faster the cellular respiration.” was still accepted. The simpler the substrates used, the faster the rate of cellular respiration. However, this must still need to be verified and justified by further experiments that would attest stronger to it. It is recommended that another experiment dealing with the nature of the substrates under the same procedure but with different microorganisms should be…

    • 2030 Words
    • 9 Pages
    Powerful Essays
  • Satisfactory Essays

    Respiration can be defined as the oxidation of the end products of glycolysis with the storage of the energy in the form of ATP. Cellular respiration occurs when oxygen is available, and the products are carbon dioxide and water. There are three main pathways in the cellular respiration process. These are: pyruvate oxidation, the citric acid cycle, and the respiratory chain. Pyruvate oxidation in eukaryotic cells occurs inside the mitochondrion in the inner membrane, and in prokaryotes on the inner face of the plasma membrane. This step is the crucial link between the steps of glycolysis and cellular respiration. In this step, pyruvate is oxidized into…

    • 278 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    How Cells Harvest Energy

    • 2051 Words
    • 9 Pages

    • Ending material – (2) Pyruvate – 3 carbon molecule. Glycolysis • Does not require oxygen. • Net balance: – 2 ATP – 2 NADH http://www.youtube.com/watch?v=x-stLxqPt6E http://glencoe.mcgrawhill.com/sites/9834092339/student_view0/chapter7/how_glycolysis_works.html NADH must be recycled • For glycolysis to continue, NADH must be recycled to NAD+ by either: 1.Aerobic respiration – Oxygen is available as the final electron acceptor – Produces significant amount of ATP 2.Fermentation – Occurs when oxygen is not available – Organic molecule is the final electron acceptor Fate of pyruvate • Depends on oxygen availability. – When oxygen is present, pyruvate is oxidized to acetyl-CoA which enters the Krebs cycle • Aerobic respiration – Without oxygen, pyruvate is reduced in order to oxidize NADH back to NAD+ • Fermentation Pyruvate Oxidation •…

    • 2051 Words
    • 9 Pages
    Powerful Essays
  • Good Essays

    Bio Final Exam Notes

    • 4837 Words
    • 20 Pages

    Major Chemical Properties for Cellular Respiration: We need oxygen at the cellular level for this to be complete. Why do you need oxygen? What is your body trying to do? Your body needs to produce energy, which is why you go through these metabolic processes, and that’s ultimately why you need oxygen. So we are trying to produce ATP as our energy source. So ultimately your energy cannot be created, it only changes form, so where does that energy come from in your body? We’re going to convert it into ATP, because your cells need ATP to do work – its like the monetary value for your cells. So where does the energy, how do you get your energy to begin with? Sugar – you have to eat food, there’s energy stored in the chemical bonds of the food. So when it goes through the digestive process your going to break it down into glucose. So basically your trying to get from glucose to ATP – the energy in the bonds of the glucose to the energy of the bonds in ATP. There are 3 major processes that allow that to happen – glycolysis (this is where you need 2 ATPs to get it going, it breaks glucose into 2 3-carbon molecules, you produce 4 ATPs. This part of the reaction is anaerobic. This takes place in the cell cytoplasm. It’s not very efficient at this point because for every glucose molecule you’re only getting a net gain of 2 ATPs. If you don’t get any glucose into the system, those breakdown products end up as lactic acid. If lactic acid builds up you get cramps, it changes the pH. So ultimately, you do have oxygen coming in, to drive this to the next step), Citric Acid Cycle (or Krebs Cycle – Occurs in mitochondria of the cell. – Just need to know the general – so in the Krebs Cycle you have the breakdown products from glycolysis – you have 2 3-carbon compounds, 1 carbon from each 3-carbon goes to CO2 and the other 2-carbon enters the cycle to combine with oxalalocetic acid, which makes citric acid. Its cycling and your producing more CO2. The big thing that coms out of the…

    • 4837 Words
    • 20 Pages
    Good Essays
  • Good Essays

    Lab2

    • 1399 Words
    • 6 Pages

    Cellular Respiration Series of chemical reactions and electron exchanges that convert glucose into ATP C6H12O6 + 6O2 6CO2 + 6H2O + ATP + heat…

    • 1399 Words
    • 6 Pages
    Good Essays
  • Good Essays

    Cellular respiration is a three part process which includes glycolysis, Kreb's cycle, and oxidative phosphorylation. In glycolysis glucose is broken down in a ten step process into 2 3-carbon pyruvate molecules. During glycolysis a net gain of 2 ATP is formed. NAD+ is reduced to NADH and 2H+ ions which in turn go to the oxidative phosphorylation process. After glycolysis, the 2 pryuvate molecules enter the Kreb's cycle. In the presence of oxygen, acetyl-CoA are formed through…

    • 499 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Cellular Respiration

    • 2328 Words
    • 8 Pages

    Introduction: In this lab, we are investing cellular respiration, specifically aerobic cellular respiration. Aerobic cellular respiration is the process by which cells consume oxygen during the oxidation of glucose and produce CO2 as a byproduct. During cellular respiration, glucose is split into a 6 carbon sugar, G3P through the use of 2 ATP, and then G3P is oxidized to form a 3 carbon molecule, pyruvate. This process is known as glycolosis. After glycolosis, pyruvate enters the mitochondria and is converted into Acetyl CoA. This is done because pyruvate’s carboxyl group is oxidized and given off as CO2 and the remaining pyruvate is oxidized to form acetate. Coenzyme A is then attached to the acetate through the help of sulfur. Acetyl CoA then enters the Citric Acid Cycle where NADH and FADH2 are produced and enter the ETC where oxygen, the final electron acceptor, oxidizes NADH and FADH2 to form water. This equation: C6H12O6 + 6 O2-------→6 CO2 + H2O shows how glucose is oxidized and the different ways of measuring cellular respiration. For this lab, we will be measuring the amount of oxygen consumed by using a respirometer, where the amount of oxygen consumed will be measured by the amount of water taken into the respirometer.…

    • 2328 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    All living organisms need energy to function and we get this energy from the foods we eat. The most efficient way for cells to harvest energy stored in food is through cellular respiration. Cellular respiration is defined as the aerobic harvesting of chemical energy from organic fuel molecules. Cellular respiration occurs in eukaryotic and prokaryotic cells. It has three main stages: glycolysis, the citric acid cycle, and electron transport.…

    • 398 Words
    • 2 Pages
    Good Essays