Fermentation Lab Report

There are many substances that can be manipulated and cause the rate of reaction in fermentation to either speed up or slow down. Substances that alter the rate of the reaction could be temperature of the water, the yeast concentration, pH, and the glucose concentration. In the experimental group of the experiment the amount of yeast concentration was manipulated. The objective of this experiment was to determine what factors affect the rate of the fermentation. To test this objective we changed the amount of yeast being used. A higher yeast concentration replaced the controlled yeast amount. A prediction made by my group was that higher amount of yeast would speed up the process of fermentation. Our null hypothesis is there will be no

4) One package of active dry yeast was added to bottle labeled ‘5mL’ and solution was swirled.

4) The general effects of alcohol on the brain are blurred vision, weakened motor skills, blurred vision, slurred speech, slowed reaction times and impaired memory. In the liver alcohol causes fat deposits to develop in the liver and cause inflammation even eventually liver disease. Similarly, in the pancreas prolonged use can cause inflammation which yields vomiting, fever, weight loss, and is potentially fatal. Lastly, in the kidneys alcohol can increase the risk of high blood pressure developing in chronic kidney disease.

This pattern often encourages people to drink more to keep the buzz going." ( Net Biz Mentor ). When people get like that they usually get a little bolder and want to do normal tasks and routines like driving a motorized vehicle. The effects of alcohol result in poor coordination, slurred speech, double vision, decrease of self-control, lost of consciousness and maybe even death.

"After drinking people usually feel pleasure and become talkative at first. These feelings are usually replaced by drowsiness as the alcohol is eliminated from the body, and the drinker may then become withdrawn. This pattern often encourages people to drink more to keep the buzz going." ( Net Biz Mentor ). When people get like that they usually get a little bolder and want to do normal tasks and routines like driving a motorized vehicle. The effects of alcohol result in poor coordination, slurred speech, double vision, decrease of self-control, lost of consciousness and maybe even death.

Alcohol impairs a person’s judgement and can increase aggressive behaviors (it does most of the time). Alcohol related crime/violence rates are rising very quickly throughout the country. There are two million incarcerated men and women in the United States, and 37% of those people admit to drinking before being arrested. When it comes to rape and sexual assault, 90% of cases involve the drinking of alcohol. Almost 30% of inmates reported being under the influence of alcohol or drugs when committing murder. Almost 3 million violent crimes happen a year in which alcohol is involved. In addition, 95% of all violent crimes reported at American colleges involve alcohol. It has been proven that binge drinking or prolonged drinking can lead to acts that are more violent and that can put other people around the drinker in serious danger. Substance abuse plays a huge role in these violent crimes. The more a person drinks the less they can control their actions and how violent they become.

Teens who drink are at higher risk for date rape, pregnancy, HIV and other STDs, assault, drowning, alcohol poisoning, alcohol dependency, DUI-related injury and death (yours and/or others)

Lactic acid fermentation: Plant and fungal cells produce alcohol as a result of fermentation and animal cells produce lactic acid

Abstract: This lab’s purpose was to see how different levels of yeast, distilled water, and sugar interact to affect the level of carbon dioxide evolved in fermentation. In this experiment we had two sections. The first section tested four test tubes with varying levels of yeast, glucose and distilled water for evolved carbon dioxide levels. The tubes were timed for 20 minutes. The amounts of solution in the test tubes are noted in the methods section of this lab report. The second section of the lab used three test tubes and flowed the same procedure except added spices. The levels of ingredients are also in the methods section. The main goal of this experiment was to see the effects of yeast concentration.

There are many processes that are needed to occur to produce something that help organisms live. Cellular respiration and fermentation are two process that are important to the survival of organisms. Cellular respiration is the way cells make ATP, which they need to survive. The process starts with the breaking down of glucose into other compounds that can be used by the cell. However, there are more steps in the process than just cellular respiration and how precise cellular respiration is depends on how much ATP can be taken from food particles in the body (Hill 646). Fermentation is mostly known in the world of beer and wine, but it also produces lactate in organisms. Fermentation is breaking glucose into separate components like water or carbon dioxide, much like that of cellular respiration. N’guessan and some peers did an experiment and they found that after fermentation had stopped, they had over 200 counts of yeast in the beer (N’guess, Brou, Casaregola, Dje 858). Under the

After alcohol reaches the brain, it numbs the frontal lobe, which has direct control over the judgment, visual perception and decision making skills. Scientists believe this is what makes alcoholics believe they can conquer any task put before them. After drinking a good number of drinks everyday over a long period of time, many things can happen. Cirrhosis of the liver can occur, which means the liver tissues become hardened. Scientists also report that irreversible brain damage can occur before cirrhosis of the liver is even detected. Also, cancer of the liver, mouth, esophagus as well as lungs and pancreatic cancer often occur as a result of alcoholism. Alcohol also has an affect on the mind as well as the body. Alcoholics often report that they feel inferior to people and believe they can do anything. Many people believe that alcohol acts as a "social lubricant." Increased social pleasures, assertiveness talkativeness and even happiness are all expected by many, when they drink in these situations. Alcohol is said to reduce tension and anxiety. This in turn allows drinkers to feel more relaxed and comfortable in social situations. However, this also encourages the drinker to drink more when under more stress.

For the experiment, the changes of temperature on anaerobic fermentation the process in which cells undergo respiration without oxygen in Saccharomyces cerevisiae was observed. The purpose of this experiment was to test the effect of four different temperatures on the rate of carbon dioxide production in yeast by measuring the fermentation rate. Saccharomyces cereviviae, also known as Baker 's yeast, is a unicellular, eukaryotic sac fungus and is good for this experiment because of its characteristic of alcohol fermentation. It was hypothesized that fermentation increases with increased temperature to a point of 37°C; above that point, enzyme denaturing will occur and fermentation will decrease. The group was able to document the carbon dioxide production and mark each of the temperature intervals which were tested at temperatures 4°C (refrigerator temperature), 23°C (Room temperature), 37°C (Human body temperature) and 65° Celsius (Equal to 150°F). The experiment was conducted by pouring yeast solution with 2% glucose in fermentation tubes, placing the tubes in the appropriate incubation temperature, marking the rise of the gas bubbles in the fermentation tubes which indicated carbon dioxide production. The results of this experiment were not supported by the hypothesis, creating different results from what was predicted. It is important to understand the fermentation rate of yeast so

Alcohol is a depressant which means it slows down the Central Nervous System. According to the American Medical Association, over 900,000 people die from substance abuse in the United States each year. Alcohol also puts your health at risk. It can cause unsafe sexual activity resulting in accidental pregnancies or it can result in sexually transmitted diseases including AIDS, herpes, and syphilis. Drinking can cause weight gain or some people may have a series of health problems including heart conditions, serosis of the liver, depression, emotional problems, and behavioral problems. In a study by the University of Washington, people who regularly have five or more drinks at a time ,at the age of 13, were much more likely to be overweigh by age 24 compared to people who didn’t drink often were most likely to be overweight or have high blood pressure. People that drink too heavily are putting themselves at risk for damaging their organs such as their liver, heart, and brain. The best way to prevent yourself from drinking is to just say “NO”. If you have a drinking

Fermenting begins when the beans come into contact with the air. Here, a workrt uses a stick to gauge the depth of the mass in a vara, or measuring box, to determine the wage of the harvester, before transferring it to the fermentation bin. During fermentation, the pulp disintegrates, producing steamy heat and a pervasive, yeasty, sour smell. It is at this point that the beans first develop thier complex characteristics.

In 1856 Pasteur was approached by M. Bigo, one of his chemistry student’s fathers who required Pasteur’s help as he was having trouble with his wine business. The scientific theory of fermentation at that time was that it was a chemical breakdown of sugar into alcohol due to un-stabilising vibrations. M. Bigo manufactured his alcohol by fermenting the juice from roots of beet. However, sometimes the alcohol turned sour. Yeast cells were known as living organisms but it was thought that they were a product or catalyst of fermentation, not the cause of it. Pasteur, using a microscope discovered that vats which formed good alcohol contained yeast cells which were round and budding. When lactic acid formed instead of alcohol, there was small rod like microbes mixed in with the yeast. (Wilson, 2017) Pasteur’s fermentation experiment demonstrated what caused the growth of micro-organisms, and the emergent growth of bacteria in nutrient broths due to biogenesis and not spontaneous generation. Pasteur exposed boiled broths to vessels with air that contained a filter which prevented particles from passing through. Nothing grew in the broths unless the flasks were broken, exposing that only living organisms which grew in broths only came from the outside rather than within the broth. This was one of Pasteur’s last and most prominent experiments which displayed spontaneous generation and the supporting of the germ theory. (Abbott, 2013) The discovery of infectious diseases changed the direction of thinking dramatically as death from infectious disease has declined because of: Increased Hygiene awareness to prevent disease, widespread immunisation programs to control and prevent disease and