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- The enzyme which catalyzes the reaction below belongs to which enzyme classification? Н.С— ОН HC=0 C=0 Н-С—ОН H,C-0-P-o- || H,C –0-P-0- O Transfera Hydrolase Isomerase OxidoreductaseThe enzyme that catalyzes reaction below can be classified as: CoO COO NAD+ NADH + H* Но- | malate -C- H-Ć- dehydrogenase Охaloacetate Malate isomerase lyase hydrolase oxidoreductase ligase transferaseWhich class of enzymes catalyzes the following reactions? CH2- CH2- CH2 H2- C- CH2 AST CH2-C CH2 CH-NH + C=O + C=0 + CH-NH ČO0 Čo0 ČO0 ČO0" Aspartate Oxoglutarate Oxaloacetate Glutamate Select one: a. Oxidoreductase O b. Isomerase O c. Ligase d. Transferase
- All coenzymes are cofactors. However, not all cofactors are coenzymes. Both statements are incorrect O The first statement is incorrect while the second statement is correct The first statement is correct while the second statement is incorrect Both statements are correctA figure of the energy payoff phase of glycolysis is shown below. Look at the reaction labelled with a 6 (on the far left), which involves the conversion of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate. reduced? HC O CHOH CH₂O-P Glycer- aldehyde 3-phosphate (G3P) 2 NADH 2 NAD+ + 2 H+ Triose phosphate 2 P₁ dehydrogenase Copyright © 2018 Pearson Canada Inc. P CHOH CH₂0-P 1,3-Bisphospho- glycerate 1,3- bisphosphoglycerate NADH NAD+ 2 ADP GLYCOLYSIS: Energy Payoff Phase Glyceraldehyde-3-phosphate 2 ATP Phospho- glycerokinase 2 Which of the compounds is C=O CHOH H–CO- P Phospho- CH₂0-P glyceromutase CH₂OH 8 3-Phospho- glycerate C=O 2-Phospho- glycerate 2. ATP 2 ADP BYD Pyruvate kinase 10 2 H₂O Enolase 2 C=O CO-P CH2 Phosphoenol- pyruvate (PEP) CH3 PyruvateWhich of the following cofactors will eventually dissociate from their enzyme polypeptide given enough time in a dilute solution? TPP NAD+ FAD Coenzyme A Biotin Lipoic Acid
- A catalase is an antioxidant enzyme that requires ferric ion for catalysis. Under conditions of iron deficiency, when the catalase lacks ferric ion, it would be referred to as: O prosthetic group O holoenzyme ароenzyme coenzymeThe reaction pictured is an oxidation-reduction reaction in the citric acid cycle in which the energy-carrier molecule NADH is generated. Identify which molecule in the reaction will be oxidized and which molecule will be reduced. Place a single answer choice in each box. COO- HO-C-H H-C-H COO- Malate NAD+ NADH + H+ Oxidized malate oxaloacetate COO- H-C-H ī COO- Oxaloacetate Reduced NADH NAD+Which of the selected phosphate group hydrolysis reactions listed in the table below can NOT be productively coupled to the synthesis of glucose-1-phosphate? Free energy of hydrolysis for certain phosphate bonds Compound kcal/ mol-1 Phosphoenolpyruvate -14.8 1,3-Bisphosphoglycerate -11.8 Creatine phosphate -10.3 ATP (to ADP) -7.3 Glucose 1-phosphate -5 Pyrophosphate -4.6 Glucose 6-phosphate -3.3 Glycerol 3-phosphate -2.2 ATP hydrolysis. Glucose-6-phosphate hydrolysis.
- In liver, the accumulation of which of the following metabolite attenuates the inhibitory of ATP on phosphofructokinase? * O Fructose-2,6-Bisphosphate Fructose-1,6-Bisphosphate Glucose-6-Phosphate O CitrateThe energy for the production of ATP comes from the breakdown of a glucose molecule via many enzyme-mediated chemical reactions occurring at several distinct stages of cellular respiration. During this time, the chemical energy stored in glucose is continually trans- ferred across these reactions. Which of the following describes the form in which most of the energy from the glucose molecule is stored just before the oxidative phosphorylation stage in aerobic cellular respiration? A B с D acetyl CoA FADH 2 NADH pyruvateThe biosynthesis of vitamin D₂ is a two-step reaction, requiring two types of concerted pericyclic reactions. Draw in the arrows for each step and identify the structure of precalciferol. If an electrocyclic reaction is required, identify if it occurs through a conrotatory or disrotatory reaction. HO H H ergosterol hv precalciferol Cast HO ergocalciferol