Name: Alexis Savastano How Does pH Affect an Enzyme? Catalase is an enzyme that helps decompose the toxic hydrogen peroxide that is produced during normal cell activities. The products of this reaction are water and oxygen gas. The pressure of the oxygen gas in a closed container increases as oxygen is produced. Any increase in the rate of reaction will cause an increase in the pressure of the oxygen.
The maximum solute concentration refers to the amount of solutes You correctly answered: b. in the interstitial space. 3. Antidiuretic hormone (ADH) affects the permeability of You correctly answered: c. the collecting duct. 4. ADH aids the reabsorption of You correctly answered: a. water.
Explain your results with reference to the concentration of respiratory gases. The body constantly produces CO2 as a by-product of the metabolic energy production. Normally carbon dioxide is carried to the lungs by the blood and is expelled though exhalation. However, holding your breath increases the concentration of CO2 in the bloodstream which can cause suffocation, or feel unconscious. One of the most common causes of hyperventilating is high levels of oxygen in the blood.
The salts will be dissolved in distilled water by small quantities until the reaction reaches When ionic compounds dissolve in water, they either absorb energy from or release energy to the surroundings. If a chemical reaction absorbs heat from the surroundings, it is an endothermic reaction. If a solution releases heat to its surroundings, it is an exothermic reaction. The enthalpy of dissolution is the enthalpy change associated with the dissolution of a substance in a solvent at a constant pressure. The change in enthalpy relies on the concentration of the salt solution, because different concentrations will produce different enthalpies.
Write the equation for the chemical reaction that occurs for the transposrt of carbon dioxide as bicarbonate ions in blood:__ 3. The three basic steps of respiration are pulmonary ventilation, external respiration and cellular respiration. 4. For inhalation to occur, air pressure in the alveoli must be less than atmospheric pressure; for exhalation to occur, air pressure must be greater than atmospheric pressure. 5.
A good example of where a large surface area is used for a fast rate of diffusion is in the alveoli of the lungs. Alveoli are the ‘air sacs’ at the end of the airways in the lungs where the exchange of carbon dioxide and oxygen takes place between the air in the alveoli and the blood in capillaries. Both the alveoli and the capillaries are extremely thin, only one cell thick, which increases the rate of diffusion, but the alveoli also have an extremely large surface area. This is because they take the shape of small spheres, giving them a large surface area to volume ratio. Another example of where surface area is maximised to increase the rate of diffusion is in the small intestine.
The level of osmotic pressure is equal in the intracellular fluid, and the extracellular fluid.’ (Study.com, 2015) ‘Osmotic pressure is vital within the human body because it allows water to enter a cell if there is lack of water, and vice versa, if there is too much water within one cell, the osmotic pressure will allows the electrolytes to exit a cell.’ (Study.com, 2015) ‘Intracellular fluid has important functions, it transports food within the cells, it also brings waste products from the cells so that they can be picked up and excreted from the body, and it maintains the shape and size of the cell.’ (Nursing411.org, 2015) ‘Extracellular fluid is located outside the body cells. The extracellular fluid consists of one-third of the water contained in the body. The extracellular fluid has many functions; it carries nutrients and oxygen to the body cells and waste materials from the cells. There are two types of extracellular fluid, including interstitial fluid and intravascular fluid.’
b. A saturated solution is when the dissolved concentration of a solute is equal to its maximum solubility at equilibrium. If the amount of chemical in a solution is in excess of what will be present in a saturated solution, precipitation will occur until the amount of chemical that is in solution is in equilibrium with the solid form of the same chemical that is also in contact with the solution. c. A supersaturated solution is a solution that the concentration of a dissolved chemical is temporarily greater than its maximum solubility at equilibrium. The excess of the chemical will later precipitate until the amount of chemical that is in solution is in equilibrium with the solid form of the same chemical that is also in contact with the solution.
According to Science Buddies in the article Measuring Surface Tension of Water with a Penny, water “molecules at the surface experience a net force pulling them inward” (2007). For instance, if you filled a cup with water to the very top, adding a few more drops of water will make the glass overfill without spilling any actual water because the water molecules are being pulled inward. While water has a unique, high surface tension, other liquids, like olive oil, do not. The cause of low surface tension in olive oil is due to “Van Der Waal” forces. While hydrogen bonds have a uniquely high surface tension, van der Waals forces have a relatively weak attraction, which causes low surface tension.
Breath Is Life. A Goldfish Respiration Experiment 03/05/15 Tom Nash Fish are able to breathe by swimming along and letting water pass through their mouth, over their gills, absorbing the dissolved oxygen that is in the water and out the operculum, or gill flaps. Fish are ectothermic, which means they are cold blooded and the environment it is in determines their body temperature. Therefore it is hypothesized that the more warmer the water, the respiration of a fish will go up. This experiment is to show the respiration of a fish in different water temperatures.