7. Students carry out a laboratory experiment of the oxidative conversion of glucose to ribose 5-phosphate on muscle and liver homogenates. The first carbon of glucose is radioactively labeled. Will the labeled atom appear in pentose? Which tissue, liver or muscle will show a higher rate of the process? To solve the problem: a) depict reactions of the oxidative stage of the pentose phosphate pathway using chemical formulas; b) indicate the significance of this process for the cells and for the whole organism; c) name the regulatory enzyme and mechanism of its regulation.

A) what are the 6 types of enzymes B) provide real world examples of protein denaturation and explain what is happening during the process C) describe factors that can affect enzyme activity

In the meantime, here's a sneak peak: you will be investigating the enzyme called catalase. Write a paragraph or more to introduce the enzyme catalase. Include the following details in your introduction: • the substrate and products of catalase, • the type of reaction performed by catalase, • factors that could increase or decrease the activity of an enzyme like catalase, • how catalase is used by cells, • in what type of cells is catalase found, • an industrial use of catalase.

23.

Which of the following describes a purpose for the function of phosphoglucoisomerase? a) allows for phosphorylation for trapping the molecule in the cell b)promotes substrate level phosphorylation and formation of ATP c) allows formation of a primary alcohol necessary for the next step of phosphorylation d)facilitates epimerization, the change in stereochemistry at one chiral carbon

1. 65 years old woman with low physical activity got the excess carbohydrates (about 400 g daily) for several years. The laboratory value of total cholesterol in serum blood was 260 mg/dl. Why the excess consumption of carbohydrates can cause hypercholesterolemia? To answer the question: a) compare the cholesterol concentration in the serum blood of the patient with the normal range; b) draw the schemes of the metabolic pathways confirming that overeating of carbohydrates can result in hypercholesterolemia; c) draw the scheme of the cholesterol synthesis regulation; d) give your prescriptions for the diet and treatment of the patient.

15

1) Describe the change of Cis-aconitate to Isocitrate. 2) Are enzymes changed during a reaction they catalyze?  3) What does "induced fit" mean when talking about enzymes

Which of the following is TRUE under the following conditions: the enzyme concentration is 2.5 nM, substrate concentration is 75 nM, the KM = 150 nM, and the Vmax = 20 nmol/min a) The rate of the reaction is 20 nmol/min! b) The rate of the reaction is between 10 nmol/min and 20 nmol/min. c) The rate of the reaction is 10 nmol/min. d) The rate of the reaction is below 10 nmol/min. e) The rate cannot be determined from the above information.

Please answer in full.