Fermentation And Respiration Essay

1092 Words3 Pages
bulb-icon

Recommended: How sugar affects fermentation

Mimi Wong Biology 5A Lab Thursdays 9:10a.m-12:00p.m 26 February 2014 Lab 6: Fermentation and Respiration Lab Introduction Question: How will increasing the number of yeast cells affect the rate of ATP production by the cells (in moles ATP/hr) if the sugar concentration in the experiment is held constant? Hypothesis: Increasing the number of yeast cells speeds up the rate of ATP production if sugar concentration is held at a constant concentration. Argument in support of the hypothesis: With an increase in the number of yeast cells, the rate of adenosine triphosphate (ATP) production-in moles of ATP for every hour is affected greatly even when the sugar concentration is constant. When the number of yeast cells grows, more cells are able to use the sugar for energy which causes the ATP production to go up. Fermentation is a catabolic process that makes limited amounts of ATP from glucose molecules (Campbell Biology 9th edition, text pg. G-14). In fermentation, one mole of carbon dioxide produced means that there is one mole of ATP produced (UCR Winter 2014 Bio 05LA Lab Manual: Lab#6, pg.4). Because the sugar concentration of the experiment doesn’t change and is constant, the amount of ATP will increase greatly up to a point. Experimental Strategy: In this experiment, the yeast being used is called Saccharomyces cerevisiae. This type of yeast follows fermentation which is very unique and can tell how much carbon dioxide is produced by fermentation more accurately compared to cellular respiration. Three test tubes will be filled with a specific volume and concentration of sugar with a certain amount of yeast in each test tube. Two of the three test tubes will have similar concentrations of sugar with different amounts of yeast... ... middle of paper ... ... a weighed Nalgene bottle and spread in a layer on a side of the bottle and then reweighed. A carbon dioxide sensor will be placed on the bottle opening. Using Lab Quest recorder, data will be collected for five minutes. After, the slope of the carbon dioxide production will be indicated and it will be used to calculate the rate of carbon dioxide was produced. The slope that indicates how much carbon dioxide was produced will be converted to milliliters per hour. Then, moles of gas shall be calculated. For 1 mole of carbon dioxide produced, 5.33 moles of ATP was produced (UCR Winter 2014 Bio 05LA Lab Manual: Lab#6, pg.4). The rate will be used to measure the corn seedlings metabolic rate with yeast cells rate after calculations. Prediction: If the metabolic rate of a reaction is high compared on a mass specific basis, then the reactant must have been a yeast cell.

Show More
Related

  • Investigation Into the Effect of Temperature On the Rate of Respiration of Yeast

    1314 Words  | 3 Pages

    2. A test tube was then filled with 35ml of yeast and placed in the

    Read More

  • The Relationship Between Food Concentration, And Respiratory Activity

    392 Words  | 1 Pages

    the experimenter added 5 ml of yeast suspension to each one of the ten test

    Read More

  • The Effects of Concentration of Sugar on the Respiration Rate of Yeast

    1192 Words  | 3 Pages

    This reaction is shown in the equation: Glucose Ethanol + Carbon Dioxide + Energy C6H12O6 2C2H5OH + 2CO2 Anaerobic respiration by yeast is generally called fermentation. Yeast is a living organism that produces enzymes. These enzymes break down glucose (by colliding with each other) to be able to respire anaerobically. I predict that the rate of fermentation will increase proportionally as the concentration of sugar increases but only up to a certain point were it will begin to decrease and eventually stop. I believe this because the more sugar added to the yeast the more glucose broken down producing ethanol and carbon dioxide.

    Read More

  • Cellular Respiration And Photosynthesis Essay

    1028 Words  | 3 Pages

    However, in anaerobic respiration (glycolysis and fermentation) only two (2) adenosine triphosphate (ATP) can be obtained. Now, for photosynthesis it is actually a carbon-fixation which is 3CO2+9ATP+6NADPH+H2O--- glyceraldehyde3phosphate+8Pi+9ADP+6NADP which turns out to just be eight-teen (18) ATP per glucose molecules in

    Read More

  • Aerobic Respiration

    956 Words  | 2 Pages

    Cellular respiration is an important function for the body to obtain energy (Citovsky, Lecture 18). There are two types of cellular respiration; aerobic conditions and anaerobic conditions. Aerobic conditions are the cellular respiration occurred with oxygen while anaerobic conditions are cellular respiration occurred without oxygen. The most common cellular respiration is aerobic conditions where oxygen were supplied for phosphorylation (Campbell et al., pg 177). In human body, anaerobic conditions occurred when muscle cells are overworked and oxygen is depleted before it could be replenished (Citovsky, Lecture 19). This is a common phenomenon during exercise. The accumulation and production of lactic acid from anaerobic cellular respiration has been always a cause of muscle sore from intense exercise (Campbell et al., pg. 179).

    Read More

  • Fermentation Experiment

    897 Words  | 2 Pages

    To start this study, nine labeled test tubes were setup with precise amounts of 2mL of deionized water, and 1ml of 50-50 corn syrup to water mixture. The addition of 1mL of yeast would also be added, but this will not be added until the fermentation apparatus is assembled in the water bath and ready to begin the reaction. The assemble of our apparatus included submerging and combining of the test tube and tubing with a stopper to ensure no air is in the apparatus. Then the assemble would be put this apparatus with water inside a Styrofoam cup, to ensure temperature is conserved best, and prepare to add the test tube with controlled substance to the test tube and stopper. The water baths at different temperatures are the only variables changed. One water bath was set up as the control group at room temperature, 28°C. The second water bath was setup to 0.4°C by use of ice water, and third bath used hot water at 49°C. Right before adding the test tube with control substance, the yeast would be added to create the reaction that produced the gas. To ensure best accuracy of fermentation, an initial test tube with all substances but yeast was performed to obtain an initial equilibrium time. Measuring of this time occurs till no more air is bubbling out of tube. This time is where we would mark are initial measuring line for each of the following reactions. As the gas pushes the water out of the test tube

    Read More

  • Baking Soda Affect The Rate Of Photosynthesis Over Time

    333 Words  | 1 Pages

    This experiment tested whether or not baking soda affected the rate of photosynthesis over time. For this experiment there was a beaker containing 100ML of running distilled water added to a beaker with 1% or 1 gram of baking soda. Then another beaker was placed beside that beaker with 100ML of 0.2% sodium bicarbonate. This was done to test the rate of photosynthesis with different amounts of baking soda over time. Both beakers were placed under a red light with 25 watts of electricity for two trials at 23 degrees Celsius. After 10 minutes in the first trial, it showed 1% of baking soda caused a greater amount of leaves to float over time; while the 0.2% sodium bicarbonate caused a fewer amount of leaves to float to the top of the beaker overtime.

    Read More

  • Yeast Cellular Respiration Lab Report

    1207 Words  | 3 Pages

    The disaccharides were: maltose and sucrose. The monosaccharides: glucose, fructose and lactose. In the experiment, the amount of CO2 produced was recorded by a gas sensor over a period of fifteen minutes in a Nalgene bottle of 3mL yeast solution and 3mL of sugar solution. It was predicted that the disaccharide sugars would produce a higher rate of cellular respiration, however, this hypothesis was proven wrong during the experiment. The data revealed that glucose was the sugar that produced the largest amount of CO2 (236 ppm/min). It had 28.5ppm/min more than the second most efficient sugar fructose (208.3ppm/min), which is also a monosaccharide. The products of one molecule of glucose in glycolysis include six molecules of carbon, six molecules of water and energy molecules called ATP and NADP (Source

    Read More

  • Salt And CO2 Production

    1518 Words  | 4 Pages

    Will the constant increased proportions of salt and sugar affect the yeast performance in bread rising and affect the cumulative CO2 production?

    Read More

  • Essay On Cellular Respiration

    1053 Words  | 3 Pages

    From my reading I learned that cellular respiration is a multi-step metabolic reaction type process that takes place in each living organism 's cell rather it be plant or animal. It’s my understanding that there are two types of cellular respiration, one called aerobic cellular respiration which required oxygen and anaerobic cellular respiration that does not require oxygen. In the anaerobic cellular respiration process, unlike the aerobic process oxygen is not required nor is it the last electron acceptor there by producing fewer ATP molecules and releasing byproducts of alcohol or lactic acid. The anaerobic cellular respiration process starts out exactly the same as anaerobic respiration, but stops part way through due to oxygen not being

    Read More

  • Investigate the Effect of pH on Immobilised Yeast Cells on the Breakdown of Hydrogen Peroxide

    1534 Words  | 4 Pages

    Investigate the Effect of pH on Immobilised Yeast Cells on the Breakdown of Hydrogen Peroxide

    Read More

  • Endosymbiosis Theory Essay

    551 Words  | 2 Pages

    10. a. The number of mitochondria per cell depends on how much energy that cell is using.

    Read More

  • Glycolysis Essay

    985 Words  | 2 Pages

    converted further to fructose 6-phosphate by phosphoglucose isomerase [8]. In the third reaction fructose 6-phosphate undergoes an additional phosphorylation to fructose 1,6-diphosphate by phosphofructokinase-1. A molecule of ATP acts as

    Read More

  • Fermentatiom By Yeast

    1325 Words  | 3 Pages

    This lab attempted to find the rate at which Carbon dioxide is produced when five different test solutions: glycine, sucrose, galactose, water, and glucose were separately mixed with a yeast solution to produce fermentation, a process cells undergo. Fermentation is a major way by which a living cell can obtain energy. By measuring the carbon dioxide released by the test solutions, it could be determined which food source allows a living cell to obtain energy. The focus of the research was to determine which test solution would release the Carbon Dioxide by-product the quickest, by the addition of the yeast solution. The best results came from galactose, which produced .170 ml/minute of carbon dioxide. Followed by glucose, this produced .014 ml/minute; finally, sucrose which produced .012ml/minute of Carbon Dioxide. The test solutions water and glycine did not release Carbon Dioxide because they were not a food source for yeast. The results suggest that sugars are very good energy sources for a cell where amino acid, Glycine, is not.

    Read More

  • The Effect Of Temperature On Cellular Respiration

    956 Words  | 2 Pages

    In this particular experiment, the procedure is carried out at different temperatures starting with 4˚C, 24˚C and then 37˚C while measuring the amount of oxygen utilized and that of carbon dioxide generated and the values recorded to plot a bar graph presentation.

    Read More

More about Fermentation And Respiration Essay

Open Document