Polycythemia is an increase in red blood cells, which would increase the viscosity and decrease flow. ACTIVITY 3 Studying the Effect of Blood Vessel Length on Blood Flow Rate 1. Which is more likely to occur, a change in blood vessel radius or a change in blood vessel length? Explain why. Increase in blood vessel radius is more likely to occur.
Angiotension II causes vasoconstriction, which raises the blood pressure. Angiotension II also stimulates aldosterone release from the adrenal gland. This leads to increased sodium reabsorption by the kidneys, which causes water to follow it, which then increases intravascular volume. The increased vasoconstriction and increased blood volume raise the blood pressure. Additionally, the perceived hypovolumic status causes the release of antidiuretic hormone (ADH) from the posterior pituitary.
Clinical microbiology MLT1 Task 9 Antibiotic Sensitivity Chandra Evans A) Selectively Toxic is defined by the fact that the antimicrobial treatment used, destroys selective microorganisms, but doesn’t harm the host. Selective toxicity of an agent is necessary so that during treatment the agent will not affect or interact with the normal functioning microorganisms in the host. The agent will interact with microbial structures and functions that are not the same as the microbial structures of the host. B) Broad spectrum antimicrobials are effective against a large range of both Gram-negative and Gram-positive microorganisms A pro of this type of agent is the fact that a variety of bacteria is targeted at the same time when used. A con is the higher risk of destruction of normal body flora.
Hypothesis I predict that if the concentration of Hydrochloric acid is increased by 20%, the rate of reaction will also increase by 20%. This is because more molecules of Hydrochloric acid will be present, meaning there will be more molecules to react with. For particles to react, they must collide with one another, but for a successful collision, there must be enough energy for them to react. This is known as activation energy. Activation energy is defined as “the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur”.
Unit 2 Acute response to exercise is short term effects that exercise has on the body. Musculoskeletal response An acute response of the musculoskeletal system during exercise includes an increase in blood supply. The short term effects on your muscles increases the temperature therefore there is more activation energy so chemical reactions are used by the musculoskeletal system and the metabolic activity increases. As the oxygen demand increases, more oxygenated blood needs to be supplied to the muscles so vasodilatation occurs so more blood can pass through the arteries. This affected me during the bleep test because vasodilation allows more oxygenated blood to travel to the actively respiring muscle tissues.
When you heat this, the water surrounding the membranes expands, and molecules gain more kinetic energy and vibrate around more. This disrupts the phospholipid bilayer. The more you heat the beetroot, the more the phospholipid bilayer is disrupted, meaning more betacyanin can leak out of the vacuole. Another big factor in the breaking of the membrane is that the beetroot contains some protein, and when this is heated the amino
Title Problem Definitions Hypothesis Background Information Procedure Materials Results Conclusion References and Acknowledgements Reactions with Alka-Seltzer How does the temperature of water effect how fast the chemical reaction of Alka-Seltzer happens? I think the Alka-Seltzer will react faster in very hot water because the molecules are moving around faster. Therefore, they will run into each other faster causing a faster chemical reaction. Molecules: Two or more atoms which have chemically combined to form something Temperature: A measure of warmth or coldness Reaction Rate: The speed of a reaction Reactants: The substance(s) first involved in a chemical reaction Chemical
The movement of water leads to dramatic changes in the volumes of the two compartments. Osmosis in red blood cells affects the tonicity of the cells. Tonicity refers to the ability of a solution to change the shape or tone of cells by altering the cells’ internal water volume (Marieb 2013). Changes in the concentration of water on either side of the cell membrane result in a net loss or gain of water by the cell (Marieb 2013). If cells are exposed to a solution that has the same solute/water concentration as inside the cells, the solution is said to be isotonic.
The biological value of oxygen is increased by the negative electromagnetic field, and that field causes the negatively charged deoxyribonucleic acid (DNA) to ‘pull’ the oxygen out of the bloodstream into the cell. One important function the negative electromagnetic field does is to keep a cellular buffer system (pH or acid-base balance) intact so that cells remain in alkaline state. Pathogenic microorganisms cannot survive in a well oxygen-saturated alkaline environment. Other function is that it can increase enzyme action, because it fosters a favorable environment within cells (simply maintaining a proper pH
The purpose of the experiment is to determine whether or not increasing temperature will increase the rate of the reaction. Reaction rate is a way of measuring how fast the reaction takes place. So the higher the reaction rate the faster the reaction takes place and the lower is the reaction time is. Research Question How does reaction rate change with increasing temperature of sodium thiosulphate in a reaction between hydrochloric acid (HCl(l)) and sodium thiosulphate (Na2S2O3(l)) ? Hypothesis With increasing temperature of sodium thiosulphate the reaction rate will increase as well.