Cellular Respiration Hypothesis
In this experiment the rate of cellular respiration was measured by the amount of CO2 in ppm per gram of substance produced by a given treatment group or the control over the course of ten minutes. CO2 levels were measured using a CO2 sensor. The sensor was given time to warm up then placed in a glass chamber with a sample from one of the treatment groups or a sample of control. CO2 levels in ppm were collected every four seconds for ten minutes by the sensor. The data was divided by the weight of the sample used to generate it, to give the respiration rate per gram of sample.
Dionna Johnson~ Chapter 2 Paper Monosaccharides are the simplest form of carbohydrates, and they're the simplest form of sugar also. Monosaccharides are the main block of complex carbohydrates, such as disaccharides and polysaccharides. They appear in a crystal-like substance, and can dissolve in water. Molasses has a high content of the monosaccharides. Yogurt contains monosaccharide galactose, cherries contain monosaccharide fructose.
Glucose is a sugar that can be used in many different forms. Glucose in plants is used by photosynthesis and is needed in order for respiration to occur and produce energy or to produce cellulose and proteins.
B-galactosidase breaks down the disaccharide lactose into simple sugars glucose and galactose. However, glucose is a colorless compound hence it has to be substituted with a compound that is detectable by a visible color change. Hence,
Cagney Watson Ms. Chartrand 6th Pre-Ap Biology 23 October 2017 Effect of Type of Carbohydrate on Respiration Rates in Yeast Introduction This experiment is based around yeast enzymes. This lab will show if yeast are capable of digesting certain sugars.
The stomata are the most critical piece to this process, as this is where CO2 enters and can be stored, and where water and O2 exit. Cellular respiration also known as oxidative metabolism is important to convert biochemical energy from nutrients in the cells of living organisms to useful energy known as adenosine triphosphate (ATP). Without cellular respiration living organisms would not be able to sustain life. This process is done by cells exchanging gases within its surroundings to create adenosine triphosphate commonly known as ADT, which is used by the cells as a source of energy. This process is done through numerous reactions; an example is metabolic pathway.
+ ATP Although plants and animals have different methods of obtaining glucose, the cell respiration process occurs in both types of organisms. Many external factors in the environment may affect the organism's’ rate of respiration such as the temperature of the surrounding,
the runner wasn’t using as much energy and carbon dioxide so it took longer for the solution to turn yellow. After exercising, the runner gained more energy as the cellular respiration process accelerated in their body. The increased amount of exercise led to the runner sweating, panting and breathing heavily to maintain homeostasis. Also, you breath much more briskly (increase in heart rate) in order to increase the oxygen intake and ensure that the cells inside the body are adequately supplied with oxygen. Once you stop exercising and the cells return to normal energy needs, less carbon dioxide is created, allowing your breathing rate to return to normal.
Homeostasis is the tendency within every living organism to maintain balance of its internal conditions in order to survive. Some examples of what our body regulates is hydration level, oxygen level, body temperature, blood pressure, and pH balance. The process of maintaining homeostasis comes from two different feedback loops, which are positive and negative feedback loops. A positive feedback loop brings a even greater change in the same direction, when the body senses a change (Raven). A negative feedback loop acts against the change sensed by the body, in order to retain the regular internal condition (Raven).
The Effect of Sugar Concentration on CO2 Production by Cellular Respiration in Yeast Introduction In this lab, our main focus was to find how sugar concentration affect yeast respiration rates. This was to simulate the process of cellular respiration. Cellular respiration is the process that cells use to transfer energy from the organic molecules in food to ATP (Adenosine Tri-Phosphate). Glucose, CO2, and yeast (used as a catalyst in this experiment) are a few of the many vital components that contribute to cellular respiration.
Photosynthesis and Cell Respiration form a complete cycle fairly simplistic. If you look at the equations for each system, you'll see that they oppositely reflect each other. The equation for Photosynthesis is: CO₂ + H₂O ⇾ Sugar + Oxygen. During Photosynthesis energy from the sun is required. Whereas, the equation for Cellular Respiration is: Oxygen + Sugar ⇾ CO₂ + H₂O (Which releases energy from the sugar).
The formula for respiration is C6H12O6 (Glucose)+6O2 (Oxygen) in the presences of enzymes → 6CO2 (Carbon dioxide) + 6H2O (Water)+ ATP (Energy). ATP is Adenosine Triphosphate. Respiration takes place in the cytoplasm and the
Fermentation uses more glucose because the process of fermentation is much less efficient than cellular respiration in terms of energy production per molecule of glucose used. The open flask (control) and the closed
Glucose, which is a six-carbon sugar, is at that moment divided into two molecules of a three carbon sugar. The breaking down of glucose, takes place in the cell’s cytoplasm. Glucose and oxygen are produced from this breakage, and are supplied to cells by the bloodstream. Also produced by glycolysis are, 2 molecules of ATP, 2 high energy electron carrying molecules of NADH, and 2 molecules of pyruvic acid. Glycolysis happens with or without the presence of oxygen.
Germinating peas and maize respire at faster rates than fresh and dried peas and maize at room temperature and 400C(graph no). This could be because pea seeds have two cotyledons as compared to the single one of maize so oxygen usage is also more. These results support my hypothesis stated earlier. Respiration is an enzymatic process where enzymes are required at every step in the breakdown of glucose. At 600C for both peas and maize the respiration rate went down as the enzymes denatured.
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