Stearic acid is an 18-carbon fatty acid. If a single molecular of stearic acid is within the cytosol of the cells: Describe the process by which stearic acid would be metabolised, beginning the molecule in the cytosol of the cell, ending with the creation of ATP, and assuming the cell has sufficient oxygen for all reactions to take place Showing all working, calculate how many ATP molecules could be generated from a single molecule of stearic acid in the cytosol of the cell
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- Assume a cell undergoes the Aerobic Respiration option of catabolism. Calculate the number of ATP molecules that it could theoretically generate if it starts with each of thefollowing molecules. 1. a) A 10-unit polysaccharide (i.e., contains 10 glucose molecules) b) Two molecules of fructose 1,6-bisphosphate c) Four molecules of succinic acidAssume a cell undergoes the Aerobic Respiration option of catabolism. Calculatethe number of ATP molecules that it could theoretically generate if it starts with each of thefollowing molecules. 4. a) A dipeptide containing a 4-carbon amino acid and a 5-carbon amino acid b)A 20-unit polypeptide (each unit = a 2-carbon amino acid) c)one glycerol moleculeConsider ten glucose molecules that enter a cell. How many ATP can be generated by the complete catabolism of these into CO2 and H2O? If all ten are first incorporated into glycogen, liberated from glycogen, and then fully catabolized into CO2 and H2O, does the ATP tally increase, decrease or stay the same? Consider that 1 UTP = 1 ATP. Explain. Describe the processes which produce ATP and provide a balanced equation of glucose, CO2, H2O and O2
- Which of the following statements is a lie? Select one: a.Energy is released when the terminal phosphate group is removed, known as dephosphorylation, whereas energy is needed when a phosphate group is added, also known as phosphorylation. b.A living organism has an unlimited supply of energy. c.Energy mediated by ATP comes from the metabolism of different isomers of C6H12O6 (sugar), such as glucose, fructose, and galactose. Which of the following statements is a lie? Select one: a.The transfer of energy in living systems use electrons to allow the cell to transfer energy in large amounts. b.Electrons play an important role in redox reactions. This is true because it is the electrons that undergo the redox reactions in living systems. c.For nicotinamide adenine (NAD), its oxidized form is NAD+ while its reduced form is NADH. This is true because NAD+ can accept electrons from an organic molecule.Which of the following statements concerning ATP is true? a. The free energy value for the hydrolysis of ATP is nearly the same for ADP. b. The free energy value for the hydrolysis of ATP is greater than that for ADP. c. ATP hydrolysis is more likely at pH 5 than at pH 7. d. One mole of glycerate-1,3-bisphosphate can phosphorylate one mole of AMP to yield ATP.Which of the following is the preferred fuel source under anaerobic conditions? Group of answer choices amino acids glucose fatty acids lactate Which of the following tissues would be the BEST choice to study if you wanted to perform experiments studying how energy from food is extracted in the citric acid cycle? Group of answer choices liver red blood cells muscle containing lots of mitochondria a tumor Which of the following best describes CoA? Group of answer choices catalytic coenzyme glycolytic enzyme stoichiometric coenzyme building block of fatty acids
- The pH values of the different compartments are shown below: matrix Intermembrane space Cytosol pH 7.8 – 8.0 pH ~ 7.0pH 7.0 – 7.4 Proton flow through ATP synthase leads to the formation of ATP, a process defined as the binding-change mechanism that was initially proposed by Boyer. Briefly explain Boyer’s binding change mechanism for the ATP synthase.Consider a cell with ATP synthase deficiency (Assume that the deficiency is isolated and will not influence the function of other respiration components). In these cells/tissues, determine the following from the catabolism of the 2.5 moles of the disaccharide lactose (will be hydrolyzed first to yield glucose and galactose). Net ATP from glycolysis ATP from oxidative decarboxylation (if applicable) ATP formed from Krebs cycle (if applicable) Total net ATPRegarding phosphofructokinase, which of the following statements is true: a. Low [ATP] stimulates the enzyme, but fructose-2,6-bisphosphate inhibits. b. High [ATP] stimulates the enzyme, but fructose-2,6-bisphosphate inhibits. c. The enzyme is more active at low [ATP] than at high, and fructose-2,6-bisphosphate activates the enzyme. d. High [ATP] stimulates the enzyme, and fructose-2,6-bisphosphate activates.
- If carbohydrates are unavailable for cellular respiration, other organic molecules can be broken down and enter the cellular respiration process at the appropriate spot. Proteins can be broken down into a variety of amino acids. Some amino acids can be converted into glutamate which can then be converted into alpha-ketoglutarate. State which steps of the cellular respiration pathway lead to the generation of the energy molecules. State the TOTAL number of ATP molecules the ONE of these converted alpha-ketoglutarate molecules can produce and explain how all the ATP molecules are generated. Draw the stages that the molecule is going through in order to produce those ATPs.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 glucoseTRUE OR FALSE: NAD most commonly oxidizes carbon – oxygen bonds NADH is the most common biochemical reducing agent FAD contains ribitol as part of its molecular structure Pantothenate is part of the Vitamin B12 structure. Vitamin D is involved with blood coagulation. People on a vegan diet usually require Vitamin B12 supplementation Transcription factors are one means of regulating metabolic processes