Yeasts’ capability of undergoing ethanol fermentation‚ its ability to ferment other sugars and artificial sweeteners‚ and how lactase influences yeasts ability to use lactose as a food source Kristina Naydenova Father Michael Goetz Purpose Part A: To investigate whether yeast has the ability to ferment glucose to produce carbon dioxide gas and ethanol. Part B: To investigate whether yeast has the ability to ferment other sugars and artificial sweeteners and how lactase influences their
Premium Carbon dioxide Sugar Ethanol
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
temperature has on the growth and respiration of yeast fermentation. The growth and respiration of the yeast can be determined by using a glucose/ yeast solution mixed with water in flasks set at different temperatures. Yeast in order to produce‚ has to make energy‚ to carry out all cellular functions (Spicer‚ & Holbrook‚ 2007). The concept that aerobic metabolism of all yeasts‚ is determined by the relative sizes of the transport rate of sugar into the cell and the transport rate of respiratory into the mitochondrion
Premium Yeast Carbon dioxide Fahrenheit
Science Form 3 note SMART STUDY - GOOD LUCK Teacher zaidi@maher2010 Chapter 1: Respiration Respiration Human Breathing Mechanism Transport of oxygen Importance of a healthy respiratory system Respiratory system Diffusion of oxygen by blood Harmful substances lungs Transport of oxygen by blood Effects of pollutants inhalation Diffusion of oxygen into cell Respiratory diseases. Good habit to improve air quality. exhalation Human Respiratory
Premium Respiratory system Oxygen Red blood cell
unicellular organisms in pond water 1831 – Robert Brown – observed the nucleus in plant and animal cells 1839 – Schleiden and Schwann formulated the cell theory that all living things are made up of cells. Schwann was the first scientist to see yeast cells producing new cells 1858 – Virchow stated that where a cell exists‚ there must be pre-existing cells 1880 – Walter Flemming described cell division from observations on living and stained cells 1.2 Describe evidence to support the cell theory
Free Cell Eukaryote
How a faster pulse rate after exercise affects the amount of carbon dioxide in breath and how males and females pulse rates change or don’t after exercise Introduction There is a chemical reaction that takes place in this lab‚ O2 + C6H12O6 –> H2O + CO2 + ATP. This represents cellular respiration‚ the reaction. The reactants are Oxygen and Glucose. The products are water‚ carbon dioxide‚ and ATP. This reaction is split into 3 stages‚ the Glycolysis stage‚ the Krebs cycle‚ and the Electron Transport
Premium Oxygen Blood Respiratory system
This experiment shows the effects of changing the pH level has on Catalase. As predicted‚ the farther away the pH levels got from the optimum pH (7.2)‚ the lower the reaction rate. At a pH of 7.2‚ the foam of the reaction measures 6cm. At a ph of 3 it measures 2.5 cm‚ at a pH of 5 it measures 2.75 cm‚ at ph 9 it measures 2.3 and at 11cm it measures 2cm. pH measures the hydrogen ion concentration of a substrate. By changing the pH of the catalase‚ the enzyme was denatured. Denaturing is the result
Premium Enzyme Chemical reaction Catalysis
A2 Biology Coursework A1- Develop a hypothesis Outline your biological knowledge or research related to the problem under investigation Yeast are eukaryotic species and make up approximately one percent of species in the kingdom Fungi. One of the most well studied yeast species‚ Saccharomyces cerevisiae‚ commonly known as bakers yeast‚ and also used in the fermentation of alcohols‚ is a model species for the study of eukaryotic cells. They are known to reproduce either sexually‚ by mitosis‚
Premium Yeast Enzyme
include learning how to measure the pH of several different liquids as well as learning how to change the pH of those liquids by adding other acidic and alkaline mixtures. Materials: Graduated cylinder- used to measure the various liquids 4 100 mL beakers- used to hold liquids when measuring pH pH meter- used to measure the pH of the various liquids Tap water- liquid we are trying to find pH of Distilled water- liquid we are trying to find pH of Soda- liquid we are trying to find pH of Milk- liquid
Premium PH Water Acid
Carbon Dioxide Production of Yeast in Different Sucrose Solutions Internal Assessment Azayleah Delgado October 27‚ 2013 Period 2 Carbon Dioxide Production of Yeast in Different Sucrose Concentrations Raw Data Tables: Sucrose concentration (%) Volume of CO2 captured (mL) 0 minutes 5 minutes 10 minutes 0 4.5 4.5 5.0 2.5 4.0 4.5 4.5 5 4.0 4.0 4.5 7.5 4.0 4.5 4.5 10 3 3.5 3.5 Table 1: Trail 1 of Volume of CO2 captured by sucrose concentration Sucrose concentration
Premium Standard deviation Carbon dioxide Normal distribution