Remember that hexose kinase is an enzyme required for hexose metabolism, a process that takes a 6-carbon sugar and breaks it down into 2 pyruvate molecules. Practice Question 5 B) How many steps does this pathway consist of? steps

For each step of the citric acid cycle, name the enzyme responsible for the chemical transformation that occurs and classify the enzyme type: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Step 8. i. oxidoreductase (oxidases, reductases, dehydrogenases) ii. transferase (transaminases, kinses) iii. hydrolase (lipases, proteases, nucleases, carbohydrases, phosphateses) iv. lyase (dehydratase, decarboxylase, deaminase, hydratase) v. isomerase (racemases, mutases) vi. ligase (synthetases, carboxylaces) Enzyme Name Enzyme Type

Under aerobic conditions of high ratios of NADH/NAD+ and ATP/ADP, as pyruvate is utilized for its carbon skeleton, which molecules would you expect to see significant radiolabeling in the liver? Select all that apply. **Please note some molecules contain more details, including not only molecule name, but location of the label. Pick the options that are accurate for the above situation. Glucose C-2 and C-5 Glucose C-1 and C-6 Glucose C-2 only Pyruvate C-1 Lactate C-2 for export CO, from TCA cycle shows some radiolabel Label is halved over many TCA cycles Oxaloacetate Malate

For each of the following molecules determine how much ATP would be net from aerobic cellular respiration. Show your work. Which of the following produces the most energy? (a) Triglycerides are first digested into glycerol and fatty acids. The catabolism of this triglyceride yields: 1 DHAP molecule, 15 FADH2, 15 NADH, and 18 acetyl- COA. (b) Proteins are first digested into individual amino acids. Deamination removes the amine group from each amino acid. The resulting catabolism produces 12 pyruvate molecules.

Propose a hypothesis that this experimental design adequately tests

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The following two reactions are coupled in the last step of glycolysis (catalyzed by the enzyme pyruvate kinase). РЕР + Н.О € Руr + Pi ADP + Pi → ATP + H2O AG° = -14.8 kcal/mol AG° = +7.3 kcal/mol D) The steady-state concentrations of ATP, ADP, and pyruvate in human erythrocytes are 2.24 mM, 0.25 mM, and 0.051 mM, respectively. What would be the concentration of PEP in these cells if the coupled reaction was at equilibrium?

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In glycolysis, the KM value of hexoquinase is 0.04 mM.  At physiological conditions, the cellular concentration of glucose is between 4 mM to 15 mM.  According with this information, which of the following statements is true (Choose all that are correct)     The enzyme has a low affinity for its substrate     The enzme is working at its maximum velocity     The phosphorilation of glucose is very slow     The small value of KM assures that glycolysis will continue even when the concentration of glucose drops below 4 mM.      The hexoquinase is saturated with glucose

What is the name of the reactant, of the TCA cycle reaction, which yields a GTP? Selected Answer: succinate Correct Answer: Evaluation Method Exact Match Question 11 Bnous: Evaluation Method Exact Match Exact Match Exact Match onday, August 10, 2020 2:58:12 AM CDT Which enzyme of the TCA cycle catalyzes the reaction similar to the one that converts pyruvate to acetyl CoA? Selected Answer: dehydrogenase complex Correct Answer: Selected Answer: 2.5 Correct Answer: Evaluation Method Exact Match ✔ Exact Match Selected Answer: False Answers: Question 10 Question 2 How many moles of NADH will be produced when 1 mole of fructose-1,3-bisphosphate is metabolized to pyuvate and then through TCA cycle ✔True False Selected Answer: succinate Correct Answer: Question 9 The TCA cycle enzyme fumarase catalyzes a reversiable reaction. This enzyme shows a very high degree of selectivity in choosing the substrate for both the forward and the reverse reactions. Evaluation Method Exact Match Specified…