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.
When adjusting the controls, what happens to the blood pH when you lower the PCO2? You correctly answered: a. The pH increases. 2. In uncompensated respiratory alkalosis, the You correctly answered: b. carbon dioxide levels of the blood are low.
A) is neutralized by water B) is surrounded by water molecules C) reacts and forms a covalent bond to water D) aggregates with other molecules or ions to form a micelle in water Answer: B Page Ref: Section 3 11 9) Which would you expect to be most soluble in water? A) I B) II C) III D) IV Answer: A Page Ref: Section 3 10) Solutes diffuse more slowly in cytoplasm than in water because of A) the higher viscosity of water. B) the higher heat of vaporization of water. C) the presence of many crowded molecules in the cytoplasm. D) the absence of charged molecules inside cells.
(2 marks) A drug of same size and shape, as that of a substrate, which fits into the active site of an enzyme will act as a competitive inhibitor and the reaction is termed as competitive inhibition. The drug will compete with the substrate molecule for the active site of an enzyme, thus, it will decrease the rate of substrate-enzyme reaction by binding to the active site of enzyme. The rate of competitive inhibition reaction is directly proportional to the concentration of inhibitor present. 2. Glucose travels in the plasma or liquid part of your blood but cholesterol (triglycerides) travel bound to protein carriers 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.
Explain. It is valid to conclude that a base were added, the rate of the reaction would slow down because the pressure of oxygen barely increased, meaning the enzymes were not working at a faster rate. 6. Predict what would happen if vinegar (also known as acetic acid) were added to a water solution of hydrogen peroxide and
3. First-pass elimination by the liver is reduced because of the immaturity of the liver and reduced levels of microsomal enzymes. 4. Intramuscular absorption
(h) "Hard" water contains a high concentration of calcium ions. Suggest a way to make hard water "softer: Answers: a) It could have been improved if the experimental design said " you have to place seven different nitrates in three different sodium solutions to see if a reaction occur." b) With my evidence silver nitrate was the would the cation that would make most of the anions create a precipitate. c) Chlorine can selectively remove silver ions from a solution because silver has a positive 1 charge and chlorine has a negative 1 charge so when they react it is a perfect
The freezing point depression has some limitations and factors which affect to what extent the freezing point of the solvent will be decreased. One major limitation is the choice of the solute to be dissolved in the solvent because the solute must be able to dissolve sufficiently to lower the freezing point of the solvent. The solute must be soluble in the solvent in order to form a homogenous mixture. A few experiments with the unknown and different solutes will tell you what kind of properties the substance has and what substances will dissolve in it. Also, there is a limit of how much solute you can put in the solvent and you should not exceed that certain percentage.
6. Addition of DNS at the end of the incubation period stopped the reaction by denaturing sucrase. Explain why it is important to denature sucrase before measuring product concentration. RESULTS See Table 1: Effect of pH on Sucrase Activity See Graph, Effect of pH on Sucrase Activity 1. State the optimum pH for sucrase activity and describe how sucrase activity changes at more acidic and more alkaline pH values.