Mixed Solutions: If 1 mmole of glucose (180mg=1mOsm) and 1 mmole of NaCl (58mg=2mmOsm) are put into a beaker and distilled water added to make 1 liter, the osmolarity is 3 mOSm/L. OSMOSIS CALCULATIONS: 1. Calculate the number of grams of NaCl needed to prepare 100 mL of a 280mOsm.L Solution. (280mosm/l) *(1L/1000mL)*(100mm/1)*(29mg/1mosm)*(1g/1000mg)=0.812g 2. Calculate the number of grams of glucose needed to prepare 100mL of a 280 msm/L glucose solution.
If the reaction is first order, its graphical representation is seen as ln[A] (natural log of concentration) vs. time, and the slope of its like is also the negative rate constant. Finally, for a second order reaction the graph is shown as 1/[A] (inverse of concentration) vs. time, and the slope of its given line is the positive rate constant. By understanding the rate law and finding the value of the correct rate constant with respect to the order of the reaction, one can determine the half-life of the crystal violet. This is because the crystal violet undergoes a decay reaction with the sodium hydroxide. According to Beer's Law, the absorbance of crystal violet is proportional to its concentration.
Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane. How well did the results compare with your prediction? Glucose was able to diffuse through the 200 MWCO because its molecular weight is 180. Albumin was not able to diffuse because its molecular weight is much larger than 200. 4.
Dip the strip in the milk, Wait five seconds, Record Data 6. Now add a few drops of each acid or base to each cup 7. Dip a new glucose a strip and record your data 8. Add a few drops of enzyme to each cup 9. Use a new glucose strip and record Data: Conclusion: According to my data, pH levels do, in fact, affect the results of Lactex.
Only the enzyme will fix the substrate because of the active sites on the enzyme. Once locked together, the enzyme can break down the substrate (Hudon-Miller, 2012c). An example of this is Sucrose. Sucrose is considered a regular table sugar. It is composed of two monosaccharaides: glucose and fructose.
Glucose travels in the plasma or liquid part of your blood but cholesterol (triglycerides) travel bound to protein carriers in the blood. Based on their respective chemical properties, explain the reason for this difference. (2 marks) Cholesterol is an amphipathic molecule, since it has polar and non – polar regions. Even though the cholesterol has polar group (OH) it dissolves fats than in aqueous
Controlled Variables. temperature; pH; sucrase + sucrose incubation time 1. Describe what is measured as an indicator of sucrase activity and why this is an indicator of sucrase activity. Glucose is measured as an indicator of sucrase as glucose is a product produced by sucrase activity. 2.
Materials and Methods Effect of pH on Enzyme Activity. 1. Dependent Variable. amount of product (glucose and fructose) produced 2. Independent Variable.
Structure similar to substrate | Harmful noncompetitive enzyme inhibitor | C. Tie up metals | Feedback enzyme inhibition | B. Binds to allosteric site | Ribozyme | D. Catalytic RNA molecule | Question 5 Potentially, how many molecules of ATP can be generated by prokaryotes from the complete oxidation of glucose to CO2 and H2O? Answers: 38 Question 6 How many molecules of ATP are spent by prokaryotes in the oxidation of glucose to pyruvic acid? Answers: 2 Question 7 Although the production of ATP during fermentation is limited, its advantage over respiration is that in fermentation Answers: | The final electron acceptors could be either inorganic or organic molecules | | Glucose is completely oxidized to CO2 and H2O. | | There is not need of an external molecule to serve as a final electron acceptor | | The production of FADH2 and NADH is higher than in respiration | | Glucose is oxidized to ethanol.
Give an example of a circulating hormone, and an example of a local hormone. How are your chosen hormones regulated?. (5marks) A Circulating Hormone are hormones that travel in blood and act on distant target cells. An example of a circulating hormone is Insulin. Insulin is released by the beta cells in our pancreas into our blood stream when our blood glucose level is high.