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.…
What is the point of cellular respiration? To harvest electrons from organic compounds. What is ATP?…
Ms. Brady Introduction To be able to carry on metabolic processes in the cell, cells need energy. The cells can obtain their energy in different ways but the most efficient way of harvesting stored food in the cell is through cellular respiration. Cellular respiration is a catabolic pathway, which breaks down large molecules to smaller molecules, produces an energy rich molecule known as ATP (Adenosine Triphosphate) and a waste product that is released as CO2. Basically, cellular respiration is a metabolic process that releases energy from organic compounds (such as C6H12O6) by metabolic chemical oxidation in the mitochondria within each cell. Proteins, carbohydrates, and fats can all be broken down into fuel for the cell but cellular respiration is usually correlated with glucose. Cellular respiration also requires O2 to carry out its pathway, as oxygen will act as a final electron acceptor. So, the final equation that can be represented for Cellular Respiration is: C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + heat.…
Photosynthesis Chemical Reaction for photosynthesis: Water + Carbon dioxide à Glucose + Oxygen 6H2O + 6CO2 C6H12O6 + 6O2…
Cellular respiration consumes oxygen as a reactant along with the organic fuel. 2. Give the formula (with names) for the catabolic degradation of glucose by cellular respiration.…
Cellular respiration involves glycolysis, the Krebs cycle, and the electron transport chain. Glycolysis is a…
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.…
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.…
AP Biology I Investigation 6 AP Bio: Lab 6 Cellular Respiration Introduction Some knowledge that is needed before performing this lab are as follows: First of all, cellular respiration is the metabolic processes whereby certain organisms obtain energy from organic molecules. This process includes glycolysis, the Krebs cycle, and the Electron Transport Chain. Glycolysis is a process that takes place in te cytosol and it oxidizes glucose into two pyruvate. Glycolysis also makes ATP and NADH. The Krebs Cycle occurs in the mitochondria and this process takes the pyruvate and breaks it down into carbon dioxide. But it also produces 3 CO2, 1 ATP, 1 FADH2, and 4 NADH. The electron transport chain takes place in the inner mitochondrial membrane nd creates H+ gradients and 36 ATP from glucose (Campbell, 2008).…
1989: Explain what occurs during the Krebs (citric acid) cycle and electron transport by describing the following:…
Cellular Respiration is part of the metabolism of organisms, it provides the energy for organisms’ basic life activity. The process of cellular respiration converts oxygen and water to glucose and carbon dioxide, and usually occurs inside of mitochondria. Thus the cellular respiration is closely related to the life of all organisms, especially the human. In a case study in cellular respiration, seven unrelated people died in five days, and the reason is unclear. However, all the victim had same symptoms, dizziness, confusion, headache, shortness of breath or rapid breathing, and vomiting. Another common is that most of deaths didn’t take too long. After further investigation, biologist found some other notable evidences.…
AEROBIC RESPIRATION-Cells only store a small amount of ATP molecules, so the chemical process of cellular respiration is necessary to convert energy from our food into enough energy for ongoing muscle contraction and other cellular work. The organic molecules in food contain stored energy…
1. Draw a picture of a mitochondrion. Label the inner membrane, outer membrane, cristae, intermembrane space and matrix.…
The drug “dinitrophenol” (DNP) was prescribed by some physicians in the 1940’s to help patients lose weight. This unsafe method was abandoned after a few patients died. DNP uncouples the chemiosmotic machinery by making the lipid bilayer of the inner mitochondrial membrane leaky to H+. Explain how this could cause weight loss.…
1. The process is for making ATP using oxygen, if available. 2. The process releases heat (Remember, heat is low quality energy) and free electrons. (Remember that electrons are a source of Kinetic Energy.)…