In bio lab‚ my lab partners and I did a lab experiment involving yeast fermentation. Fermentation is an anaerobic process to regenerate NAD+ to keep glycolysis active. Yeast preforms ethanol fermentation which create ethanol and NAD+. The class used six different types of sugars to determine which fuels fermentation by measuring the amount the carbon dioxide bubbles produced by the yeast. Yeast are single-cell fungi that cannot make their own food. They take the sugars in the surrounding environment
Premium Glucose Carbon dioxide Yeast
Carbohydrates‚ Proteins‚ lipids‚ and nucleic Acid Lab Exercise 6 Date: 9/17/12 Bio 102-11 Purpose the purpose of this experiment was to perform test to detect the presence of carbohydrates‚ proteins‚ lipids‚ and nucleic acids. Explain the importance of a positive and a negative control in biochemical test. Use biochemical test to identify an unknown compound. Background Most organic compounds in living organisms are carbohydrates‚ proteins‚ lipids‚ and nucleic acids they are called macromolecules
Premium Carbohydrate Glucose Starch
Biochemistry: Biological Molecules Pg. 2 – 7 Carbohydrates Pg. 8 – 12 Proteins Pg. 13 – Lipids Carbohydrates. L.O. 1.1 and 1.2 Carbohydrates are sugars and they are the primary source of energy for our vital functions such as breathing and sleeping. There are two types of carbohydrates‚ simple and complicated. Monosaccharides‚ disaccharides and polysaccharides. L. O. 1.2 Carbohydrates are split into different classifications depending on how many molecules they have. Monosaccharide: one sugar
Premium Protein Amino acid
The effect of changing volumes of NaF added to 1mL of 35 °C yeast on the level of respiration in the solution‚ as measured by the degree of colour change after 10 minutes. | Degree of colour change in yeast solution at 35 °C after 10 minutes | Concentration of NaF drops in the yeast solution (+/-1 drops) | Group 1 | Group 2 | | Trial 1 | Trial 2 | Trial 3 | Trial 4 | Trial 5 | Trial 1 | Trial 2 | Trial 3 | Trial 4 | Trial 5 | A=0 drops | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | B=5 drops
Premium Concentration Change
The use of yeast as a food dates all the way back to the Ancient Egyptians. Note that unlike the yeast used to leaven bread‚ nutritional yeast is inactive. It has been deactivated so that it cannot be used to make bread rise or convert sugar into alcohol. It is also different from brewer’s yeast‚ though the two are strains of the same fungus. The main difference is the source. As its name suggests‚ brewer’s yeast is a product of the brewing industry; it is typically bitter because it is grown
Premium Brewing Beer Yeast
1 diabetes and is very physically active. An example of a healthy day of eating for Jason would be three meals that do not individually exceed 60 grams of carbohydrates. As for between meals and to promote energy for sports‚ it would be a good idea for Jason to choose nutrient dense snacks that do not contain more than 30 grams of carbohydrates. Some snack suggestions might be a small granola bar‚ nuts and fruit‚ or peanut butter crackers. Jason’s morning meal could be a breakfast burrito that includes
Premium Nutrition Meal Food
Abstract Carbohydrates are important in metabolic processes for everyday physical and chemical actions. The carbohydrate‚ glucose‚ is a key component in generating adenosine triphosphate‚ also known as ATP. In order to analyze unknown glucose levels‚ a DNS assay was performed. By using 2-hydroxy-3‚5-dinitrobenzoic acid to oxidize the aldehyde group on the carbohydrate‚ the reducing end of glucose increases in absorbance of 540 nm. Using a UV spectrophotometer‚ the concentration was calculated
Premium Fructose Sucrose Glucose
and started adding one scoop of our enzyme catalyst‚ in this case‚ the yeast. We then proceeded to measure and add 1 mL of distilled water to test tubes A-D. To get a more accurate measure of 1 mL of distilled water‚ we used the dropper labeled “W” to drop distilled water into the 5 mL graduated cylinder until we saw that the bottom of the water line reached closely to 1 mL. Next‚ we took the four tubes with the scoop of yeast and added to each the corresponding 1 mL of water from tubes A-D. As
Premium Chemistry Water Distillation
detoxifying hydrogen peroxide and preventing the formation of carbon dioxide bubbles in the blood. This laboratory exercise involves the use of an enzyme that will react with hydrogen peroxide. The enzyme is catalase and hydrogen peroxide (H2O2) is the substrate. The reaction is as follows: catalase 2H2O2 2H2O + O2 Ingested hydrogen peroxide is a poison‚ while external use of this substance is not. However‚ the generation of oxygen gas requires careful handling
Premium Oxygen Enzyme Hydrogen peroxide
What is the difference between oxidative and substrate level phosphorylation? Oxidative phosphorylation is a metabolic pathway that uses energy released by the oxidation of nutrients to produce ATP. Oxidative phosphorylation uses the electrochemical gradient‚ set up by the oxidation of nutrients‚ of protons across the inner mitochondrial membrane to generate ATP from ADP. During oxidative phosphorylation‚ electrons are transferred from electron donors to electron acceptors such as oxygen‚ in
Premium Adenosine triphosphate Cellular respiration