• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigating the Respiration of Yeast

Extracts from this document...

Introduction

Biology - Coursework Investigating The Respiration Of Yeast Factors That Can Affect It In order to alter the respiration of yeast, I will have to change a factor, this could be any of the following things - * Temperature * Amount Of Food (Sugar) * Amount Of Fluid (Water) * Different Types Of Yeast I have decided to investigate the effect of altering the temperature of the experiment. I predict that the rate of CO2 released will increase with the temperature. The theory behind this is quite complex. Energy is required for respiration (in this case, the transforming of Glucose (C6H12O6) ...read more.

Middle

There is no need for an oxygen intake, as this experiment requires Anaerobic Respiration The Equation For The Experiment Is - To carry out this experiment I will need: - * Electronic Scales * Conical Flask * Water Bath * Bunsen Burner * Tripod * Heat-Proof Mat * Tubing (With Bung) * Measuring Cylinder * Thermometer * Yeast * Sugar * Stopwatch I will Construct my experiment like this: - Method - 1. Heat the water to a desired temperature, using the thermometer to record the heat. 2. Once the water is at the desired temperature, take the heat off, and place in the yeast and sugar mix into the conical flask 3. ...read more.

Conclusion

liquid product immediately/safely * Keep the Bunsen on a safety flame when not in use * Use a heat proof mat Time (Seconds) 150C 200C 250C 300C 0 20 40 60 80 100 120 140 160 180 200 220 240 *I am unsure about the duration of the experiment at the time of writing this plan, so I have decided to opt for 4 minutes, however, this time may be shortened of lengthened if the 'Test' experiment provides results. I may also however take readings with the water at higher temperatures, most likely going up to 500C Any changes I make will be enclosed on a separate sheet with the conclusion titled 'Changes To Plan'. There will also be an updated version of the results table on that sheet. James Maiden 10w ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Energy, Respiration & the Environment section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Energy, Respiration & the Environment essays

  1. Marked by a teacher

    effect of temperature on the rate of respiration in yeast

    5 star(s)

    For this to happen, respiration goes under few processes such as: Glycolysis: Glycolysis is the sequence of reactions that converts glucose into pyruvate with the concomitant production of a relatively small amount of ATP. Firstly glucose is phosphorylated from 2 ATP molecules to raise the energy level of the compound

  2. Marked by a teacher

    An investigation into the effect of different sugars on respiration in yeast.

    5 star(s)

    using, three are monosaccharides - glucose, fructose and galactose, and three are disaccharides - sucrose, maltose and lactose. From the research I have found about the sugars, I predict the fastest rates of reaction will come from either glucose or fructose.

  1. Marked by a teacher

    Effect of Anaerobic Respiration On Yeast

    5 star(s)

    This will cause more collisions to occur and allow the enzymes to react ore easily and regularly. At 40�C or 50�C I predict that the most will occur at these temperatures. Not all the heat energy will be passed onto the yeast.

  2. Marked by a teacher

    'An investigation into the ability of two strains of the yeast Saccharomyces cerevisiae to ...

    4 star(s)

    As a means of accuracy control, take the pink colour chart and continue to titrate slowly until the set point has been reached, i.e. the colour of the solution exactly matches the colour on the chart. From the burette, take the reading from where the reduced volume of NaOH lies.

  1. the effect of ethanol on the rate of anaerobic respiration

    Modification/ Previous experiment (6): Having carried out the previous experiments" An investigation into rates of fermentation by yeast "and "The effect of ethanol on the rate of anaerobic respiration of glucose by yeast", we have seen that sucrose is the best respiratory substrate and the ethanol concentration of 25% is too high resulting in a reaction with infinity.

  2. Investigating the Effect of Temperature on Rate of Respiration in Yeast

    In the matrix, the pyruvate is decarboxylated using decarboxylase enzymes and it is dehydrogenated also, which produces more reduced NAD. After that it is combined with coenzyme A to produce acetyl co enzyme A. + ions and electron, the hydrogen ion remains in the matrix.

  1. Investigating how prolonged exposure to its optimum temperature affects the respiration of yeast.

    Similarly, less Carbon Dioxide produced, indicates less respiration taken place at either that particular temperature or after the amount of time exposed to that heat. It is natural to assume that, after putting the yeast in a certain temperature of water, it will take a few moments to adjust to that temperature.

  2. An investigation into the effects of temperature on the rate of anaerobic respiration of ...

    It involves a culture of yeast and a solution of sugar, producing ethanol and carbon dioxide with the aid of the enzymes. The alcohol produced has been used in making wines and beers and the carbon dioxide produced has been used in baking as it gets trapped in the dough and causes it to rise.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work