Substrate concentration and yeast catalase Aim: To see how the substrate concentration in hydrogen peroxide affects the rate of an enzyme controlled reaction using yeast catalase. Introduction: An enzyme is a biological catalyst made of protein. Enzymes are protein molecules found in living organisms and in this case I will use a yeast catalase. Catalase is an enzyme that catalyzes the reduction of hydrogen peroxide. Hydrogen peroxide is a poisonous by-product of metabolism‚ so it is very
Premium Hydrogen peroxide Enzyme Catalase
of Glucose in Yeast Cells Glucose is absorbed across the cell surface membrane (plasma membrane) of most cells. A convenient way to investigate this is to use a solution of glucose and a suspension of yeast cells. The amount of glucose taken up from the glucose solution by yeast cells in a fixed length of time can be measured. At the end of the fixed length of time‚ further uptake of glucose is prevented by transferring the yeast suspension to a boiling water bath to kill the yeast cells. If the
Premium Cell membrane Protein Chemistry
3A Task 1 Aim: the aim of the experiment is to find the best temperature to ferment yeast at. Hypothesis: the yeast will ferment the best at 60 degrees Celsius. Independent variable: the temperature of the water the yeast is put in to ferment. Dependent variable. The amount of air bubbles the yeast produces. Controlled variable: the amount of yeast and glucose in each syringe. Uncontrolled variables: human error in counting. Materials : Plastic soft drink bottle cut to size Marking pen
Premium Celsius Temperature Fahrenheit
Comparing the Rate of Fermentation of Yeast in Solutions with Different Concentrations of Glucose Brandon Bosley BIO 121 11/19/2013 Introduction: In our lab this week we tried to see how different amounts of substrates affect our organism‚ yeast‚ in its fermentation process. Yeast (Saccharomyces cerevisiae) is an organism that is cultured for the cells themselves‚ as well as the end products that they produce during fermentation. Yeasts are commonly known for the ethanol fermentation due
Premium Carbon dioxide Metabolism Yeast
The methylene blue staining procedure is used to measure yeast viability based on the assumption that the methylene blue will enter the cells and be broken down by living yeast cells that produce the enzymes which breaks down methylene blue‚ leaving the cells colourless. The non- viable cells do not produce this enzyme (or enzymes) and as such the methylene blue that enters the cells are undegraded causing the cells to remain coloured (the oxidized form concentrates intracellularly). The coloured
Premium Yeast Ethanol Enzyme
multicellular organisms‚ also to research and understand how to use a CO2. Background: Living systems require free energy and matter to maintain order‚ to reproduce‚ and grow. Energy deficiencies cause disruptions at the population and ecosystem levels as well. 1 mol of H2O produces 1 mol of CO2 through cellular respiration. Autotrophic organisms capture free energy from the environment through the process of photosynthesis and chemosynthesis. Hypothesis: The germinating beans will discharge more
Premium Carbon dioxide Oxygen Cellular respiration
breaks down glucose into ethanol and carbon dioxide without the use of oxygen‚ is extremely vital in food processing. Especially useful in the making of bread and wine is yeast‚ a single-celled fungus. The rate of fermentation of these products can be done by measuring the amount of carbon dioxide produced by the work of the yeast. The specific variable we tested was the volume of fructose in each vial solution. Hypothesis: The vial with the highest volume of fructose will produce the most carbon dioxide
Premium Carbon dioxide Enzyme Yeast
Yeast Fermentation Lab Report SBI4U Chaweewan. Sirakawin Present to Ms.Allinotte November 21. 2014 Introduction: Fermentation is a metabolic pathway that produce ATP molecules under anaerobic conditions (only undergoes glycolysis)‚ NAD+ is used directly in glycolysis to form ATP molecules‚ which is not as efficient as cellular respiration because only 2ATP molecules are formed during the glycolysis. One type of fermentation is alcohol fermentation‚ it produces
Premium Cellular respiration Carbon dioxide Oxygen
In this lab my group and I tested to see how yeast would react to different substances. Yeast is a fungi that releases carbon dioxide which can be used in the process of bread making. During this lab we used sugar‚ warm water‚ cornstarch‚ yeast‚ a gas sensor‚ plastic cylinders‚ and a laptop. The process of this lab was to create cellular respiration‚ which is what cells do to break up sugars into a form that the cell can use as energy. When yeast and a certain substance were combined‚ this substance
Premium Carbon dioxide Yeast Metabolism
Myrtle Freedom under threat: PH‚ 2rd deadliest country for Journalists Journalism has long been a high-risk profession‚ many journalists and reporters have put their lives on the line for a story. Journalists often have to go through extreme measures just to get information. Intensive research‚ live coverage and interviews are being demanded more and more by the public and in order to get such vital information‚ being on the scene is necessary. According to Committee to Protect Journalists (CPJ)
Premium Murder Journalism Homicide