PH

seconds, pH = 7.4 2. At 40 seconds, pH = 7.4 3. At 60 seconds, pH = 7.4 4. Did the pH level of the blood change at all during normal breathing? If so, how? The pH did not change during the normal breathing. 5. Was the pH level always within the “normal” range for the human body? Yes it was. 6. Did the PCO2 level change during the course of normal breathing? If so, how? No it did not change either. Activity 2a: Hyperventilation – Run 1 1. At 20 seconds, pH = 7.48 2. At 40 seconds, pH = 7

The Effects Temperature, pH and enzyme concentration have on Enzyme Catalase Tiffany Sievers Biology 110, Community College of Baltimore County Abstract The purpose of this experiment was to test the effects that temperature, pH, and substrate concentration have on an enzyme catalase reaction. What affects will temperature, substrate concentration, and pH levels have on an enzymes catalase reaction? Temperature, pH levels and substrate concentration will have an effect on the

Buffers I. Purpose The purpose of this experiment was to get an understanding as to how to properly prepare chemical buffers. Also part of this experiment was to gauge the effectiveness of the buffers by measuring their pH levels in various titration solutions, using a pH meter. II. Procedure To start our experiment we had to prepare Buffer B, which was the .060 M Ammonia/Ammonium solution. Using 3.0 M ammonia, we had to calculate the proper volume of NH3 base by using

BIOL 140 Lab—The Chemical Composition of Cells Name ____________________________ I) Introduction All cells contain four major types of macromolecules: carbohydrates, lipids, nucleic acids, and proteins. In today’s lab, we will be studying three of the four-proteins, carbohydrates and lipids. Various chemical tests can be used to detect the presence of each of these molecules. Most of the tests involve a color change visible to the eye. If a color change is observed, the test is considered positive

must be regulated. The integrity of cells, tissue sand metabolic processes depend on the body’s pH to be in a narrow range to function properly. The pH level is defined by the concentration of hydrogen ions, the measure od the body’s acidity. When the hydrogen ion concentration drives the pH out of range, a buffering system that involves the respiratory system, and kidneys are activated to return the ph balance to normal. The respitory system manages immediate needs and the kidneys handle the process

change in pH when little measures of solid corrosive or base are included. For instance, when 0.01 mole of solid corrosive or base are added to refined water, the pH drops to 2 with the corrosive and ascends to 12 with the base. In the event that a similar measure of corrosive or base is added to an acidic corrosive – sodium acetic acid derivation cradle, the pH may just change a small amount of a unit. (1) Buffers are imperative in numerous ranges of science. At the point when the pH must be controlled

enzyme, just like any other enzyme, has an optimum PH and temperature range in which it is most active, and in which the substrate binds most easily. The purpose of this experiment was to determine (1) the reaction rate of an amylase enzyme in starch and (2) the environmental factors that can affect the enzymatic activity. The hypothesis, in relation to the enzymatic activity by variables such as the substrate concentrations, temperature, PH and chemical interactions on the rate of reaction

response to small external changes in the environmental conditions, such as temperature, pH, light, magnetic or electric field, ionic factors, biological molecules, etc. Smart polymers have very promising applications in the biomedical field as delivery systems of therapeutic agents, tissue engineering scaffolds, cell culture supports, bioseparation devices, sensors or actuators systems. pH-sensitive polymers: pH-sensitive polymers are polyelectrolytes that bear in their structure weak acidic or basic

optimal ranges under which the enzyme activity is maximized. Also to determine whether saline and alcohol are inhibitors or activators Hypothesis: PH factor prediction: I predict that as the pH increases so the activity of the enzyme will increase until it reaches optimum pH range (pH 7) because the enzyme is less denatured when it reaches the preferred pH level, and after this it will decrease because the active site will change in shape and it will no longer accept substrates. Temperature factor

high rate. Temperature also considered a main factor for Ocean characteristics regulation. Global warming increase the temperature of the ocean. Rapidly rising levels of atmospheric CO2 are not only causing ocean warming, but also lowering seawater pH to a point closer to the acidic number, hence the carbonate saturation state of the oceans, on which many