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.
The absorption spectrum is measured using a spectrophotometer and the data is graphed in Excel. The peak of the line is used to find Vmax of Fe2+. Vmax is used to find the moles of Fe2+ and ligand. The unknown n is a ratio of moles ligand divided by moles Fe2+. Results and Discussion For the first part of the experiment (Part A), five different 100 mL volumetric flasks were each filled with 1,2,3,4 and 5 mL of iron (II) solution.
Was the rate of increase of sucrase activity higher at a pH of 8.5 or a pH of 5.5? 3. State the optimum temperature for sucrase activity, and describe how sucrase activity changes at lower and higher temperatures. The optimum temperature for sucrase activity is 40˚ C. Sucrase activity drops at lower and higher temperatures (it kind of levels out with minimal change at higher temperatures but is still dropping). See Table 3: Effect of Sucrose Concentration on Sucrase Activity See Graph: Effect of Sucrose Concentration on Sucrase Activity 4.
Once more alkali is added to this, the solution will begin to increase again in pH, going up to 12 – 14, and being blue/purple in colour through testing with indicator. This would be because there would then be more OH- ions. Hypothesis and prediction: Concentration of an acid affects the pH during a titration. As the concentration of the acid increases, I predict that the volume of alkali needed to change the pH to reach an end point will also increase. I also predict that doubling the concentration of acid will require double the amount of alkali to reach an end point.
Then by filtering, iodide can be extracted which when combined with other substances can make an iodine tincture, that is a pharmaceutical product. * Can a single substance be isolated from a mixture? Yes a single substance can be isolated from the seaweed mixture by using methods such as filtration and evaporation. In our experiment we used filtration using a filter paper funnel to extract the iodide from the tincture. * What is this substance This substance is iodide Confidence Report The aim of extraction, is to separate a part of raw material, using a solvent such as water with heat.
(d) Oil companies anticipate an upsurge in demand for oil in electricity generation. (e) The demand for petrol rises. (f) New technology decreases the costs of oil refining. (a) Shift right. (b) Movement up along (as a result of a rise in price).
Some of these factors include the Factors on the supply-side that affect prices include natural gas production, net imports, and underground storage levels. Increases in supply tend to pull prices down, while decreases in supply tend to push prices up. Increases in prices tend to encourage production, imports and sales from storage inventories. Declining prices tend to have the opposite effects. Factors on the demand side include economic conditions, winter and summer weather, and petroleum prices.
c) Using the same logic as (b) So, output increases by about 3 percent. The change in the real rental price of capital is: The real rental price falls by 6.5% because there are diminishing returns to capital. The change in the real wage is: So, the real wage increases by 2.9% because the added capital increases the marginal productivity of the existing workers. (Notice that the wage and output have both increased by the same amount, leaving the labour share unchanged—a feature of the Cobb-Douglas production function.) d) Using the same
Materials and Methods Part 1 For the cation elimination test first 10 drops of potassium, iron (III), zinc (II), copper (II), and cobalt (II) were added to 5 centrifuge tubes and the color was recorded. Then for the metal hydroxide test, 6 M NaOH was added drop wise till a precipitate was formed. Each solution except potassium formed a precipitate, so then 10 additional drops of NaOH were added to the remaining solutions. Tubes were cleaned with distilled water and 6 M HCL. Next was the ammonia test 10 drops of each metal solution were added to new centrifuge tubes and 15 M NH4OH was added until the solution changed color or a precipitate was formed.
State the optimum pH for sucrase activity and describe how sucrase activity changes at more acidic and more alkaline pH values. See Table 2: Effect of Temperature on Sucrase Activity See Graph, Effect of Temperature on Sucrase Activity 2. Was the rate of increase of sucrase activity higher at a pH of 8.5 or a pH of 5.5? 3. State the optimum temperature for sucrase activity and describe how sucrase activity changes at lower and higher temperatures.