Why is it important for organisms to regulate internal temperatures or metabolic processes at different temperatures? -Certain vital enzymes will become inactive if the temperature is too cold, and denatured if the temperature is too hot. The organism cannot function without these vital enzymes. 8. Explain how the process of blanching is used in the food industry and why a specific temperature is required.
Supplying enough energy to support the many functions of the body at work and play is one of the chief functions of food. This energy comes from the fats, carbohydrates, and proteins in the food you eat. Without energy stored in our bodies- our bodies would not function. It is required for the molecules to move in and out of the cells, for breaking down large molecules and also foe building new ones. The role of energy in our body consists of the breakdown of large, complex molecules to the simplest form to release energy, this is called catabolism.
This theory states that the shape of the active site changes to the correct shape when the substrate binds to the enzyme. When the products of the reaction are formed, they no longer fit the shape of the active site and fall away from the enzyme active site. The enzyme then reverts back to the original shape, until another substrate molecule collides. Below is a diagram showing the induced-fit model. Both models show why enzymes are not changed by the reactions that they catalyse and provide an explanation as to why enzymes can be continually re-used.
affect the enzyme activity, to get enzymes working there should be proper ph. to avoid denaturing of enzymes, changes in pH alters ionization of charged amino acids. In an experiment to determine the pH range over which the enzyme catechol oxidase is able to catalyze its substrate, this will also help determine the optimum pH in which enzymes work best. Materials • 7 test tubes • Test tube rack • Metric ruler • China marker • Wash bottle containing 1%
This will occur because the water and glucose are small enough to diffuse out of the pores in the dialysis bag, but the starch molecules are too large to fit through 2. If a solution is very hypertonic, then the most amount of water will diffuse across the semi-permeable membrane into the dialysis tubing. This occurs because the higher concentration of solute, the more water it takes to reach equilibrium, thus, the faster rate of osmosis. 3. If we place the potato in a sucrose solution with a similar solute concentration as a potato, then the least amount of water will diffuse into or out of the potato cells.
Lactase Buffer solutions 4,7,9 Enzymes are organic catalysts that control the rate of chemical reactions in cells while not being permanently altered themselves. In general, enzymes speed up the rate of reaction by lowering the activation energy required to start reactions. Lactase is an enzyme used by the body to hydrolyze lactose, a disaccharide unique to mammalian milk, into the monosaccharaides, glucose and galactose. Lactose has been shown to aid in the absorption of several minerals, including calcium, magnesium, and zinc. .
pH > 7 is alkalinity environment that will bind hydrogen ion, and pH < 7 is acidic environment that will donate hydrogen ion. On the other hand, increasing hydrogen ion concentration will reduce the bound metal cation concentration. Decreasing hydrogen ion concentration will increase the hydroxyl ion concentration (M. Chaplin, 2004). Enzymes are one of the most efficient catalysts in biochemical reactions. They are used to speed up the reaction rates by providing an alternative reaction pathway of lower activation energy, which is the minimum energy that requires for reactions occur.
Energy Systems D2 After I analyse each aspect of the energy systems I will then explain why they are so vital in helping us when participating in sporting activities. First lets start by looking at what ATP is. Adenosine Triphoshate, better known as ATP is the energy our body uses willingly to create movement such as contractions in the muscles. ATP consists of one adenine and three phosphate molecules. It is produced through the breakdown of foods that we eat.
Enzymes are a type of protein which speeds up the chemical reactions which occur within an organism by lowering the activation energy required to start the reaction. 6. Lock and Key- Only a specific substrate is able to fit in a particular enzymes active site as the substrate is believed to be a perfect fit for the active site. Induced Fit- When a substrate binds to an enzyme’s active site, the enzyme temporarily changes shape to accommodate the
Cheese making is a relatively simple process but it requires careful control of time and ingredients. This report aims to show the production methods involved in cottage cheese manufacturing and to explore the chemical reactions that occur. 2.0 Introduction A Complex food is one that is comprised of several key ingredients and where each of those key ingredients plays a specific role in its production. Cottage Cheese is a variety of fresh soft cheese that comprises of individual grains. It is widely viewed as a healthy option and commonly eaten by people on a weight management plan, as it is a good source of protein whilst remaining low in fat (Deland, 2012).