Yeast and sugar were added to distilled water and mixed thoroughly to activate the yeast. Looking at the theory behind the carbohydrates involved as well as the yeast being used can justify my prediction. We use cookies to give you the best experience possible. The first variable, which I will touch upon, is the pH of the mixture. My hypothesis can be justified by the way in which yeast digests with the chosen sugars. Your Answer is very helpful for Us Thank you a lot!

First lesson after the designated units f—. During the experiment, the CO2 produced will be recorded at intervals of 60 seconds 1 minute. Another mixture was made with yeast and agave syrup. The two sugars used in the experiment will be glucose monosaccharide and maltose disaccharide making it easier to compare the rate of CO2 produced for both of these sugars. Temperature is a factor on cellular respiration in yeast because as the temperature increases it reaches an optimal temperature to produced the most energy and waste. Yeast has the ability to breakdown sugar into glucose, which causes the release of carbon dioxide.

My aim is to find how temperature affects the rate of anaerobic respiration in yeast.

Sorry, but copying text is forbidden on this website! Od enzyme locks into the substrates active site and the required reaction takes place. If you need this or any other sample, we can send it to you via email. This could be due to inadequate storage.

The Effect Of Temperature On Anaerobic Respiration In Yeast – GCSE Science – Marked by

The bond formed between the two monosaccharide residues is a glycosidic bond. Rate of yeast cells including respiration. With glucose the gradient is 0.


Accessed May 22, I know this because the gas given out is CO2, this is the waste gas given out during anaerobic respiration. Another factor was the schools resources. My hypothesis can be justified by the way in which yeast digests with the chosen sugars. Despite this, I once again feel the experiment went really well and the plan used for the practical was well done.

Doing this coursesork 4 times for each sugar will ensure preciseness and accuracy as well as proving the reliability of the results. A substance, which can be identified as a risk, is the yeast involved.

Except from human errors, a difficulty experienced was the water was coursewprk trapped in the glass tube above the waterline. Yeast will undergo cellular respiration coursewwork way of anaerobic respiration when supplied with sugar.

Shown by the calculation above, the gradient for glucose is approximately 3 times that of the maltose, which coursewotk that the rate of CO2 produced is approximately 3 times quicker than compared to maltose. This shows that a change in pH could affect the rate of respiration and production of CO2 by the yeast cells. I think this was the reason the results were as accurate and reliable as they could be.

anaerobic respiration of yeast coursework

Even though strong reliable results were produced, I think this could have been strengthened for more accurate results. Similarly cold temperatures and hot temperatures will not have the same effect. I think if there was an alternative method for measuring the rate of respiration with different sugars, this could improve the precision and accuracy of the experiment.

How about receiving a customized one? This could have allowed for fresh yeast preparation and if the limited time for the test were extended, this would have provided more reliable results. As shown in the graph, the average CO2 collected for glucose monosaccharide is quicker than the maltose disaccharide.


The respiration of yeast in different sugar substrates Essay

I predict the warm temperature will be optimal for yeast respiration therefore the most carbon dioxide will be released. Breaking this bond would slow the rate of CO2 produced in the respiration of yeast with the disaccharide anaefobic comparison to the monosaccharide.

How about receiving a customized one?

However glucose only requires the zymase enzyme to be broken down into ethanol and CO2, maltose. The measuring cylinder and the conical flask will be connected using the glass tube provided.

With the yeast being prepared early, that meant the solution was not fresh, probably causing a few enzymes to denature.

anaerobic respiration of yeast coursework

Also, if the temperature is too high, the yeast cells may die. Yeaast variable is the concentration of the solutions that are to be mixed. However, care will be needed when dealing with the equipment, such as the conical flask. The products of the respiration of yeast are CO2 and ethanol, where the CO2 is collected in the experiment. DisaccharideConstituent monosaccharidesType of glycosidic bondOccurrence and importance.

anaerobic respiration of yeast coursework

This can be justified by the positive correlations in the graphs of both sugars.