Dehydrogenase
Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
First question: Which type of enzyme fron table 11-2 catalyzes the following reactions (a) 600 c=0 CH + NADH + H - 500- + NAD HO-- CH, COO H-CH(CH HỘI NH ADP + P 5. On the free energy diagram shown, label the intermediate(s) and transition state(s). Is the reaction thermodynamically favorable? 6. Urcase, the first enzyme to be crystallized, is inhibited in the presence of Hg, Cd, or Co ions What does this information suggest about the catalytic mechanism...
For the enzymatically catalyzed reactions shown below, classify the enzymes as oxidoreductases transferases, hydrolases, lyases, isomerases, or ligases. Answer parts (a), (b), and (c) carboxylate phosphate acylphosphate O oxidoreductase O transferase O hydrolase O lyase isomerase O ligase
There are 6 classes of enzymes: oxidoreductases, transferases, hydrolases, lyases, isomerases, ligases. Decide to which class each of the enzymes belongs. 3. 1) Papain Ha R3 O R3 Papain 2) Aspartase NH? +NH3 OOC H Aspartase 3) Coo lactate dehydrogenase ??? ?? Lactate dehydrogenase
which of the following coupling reactions can be used to couple vinyl groups to a benzene ring select all that apply 27. Which of the following coupling reactions can be used to couple vinyl groups to a benzene ring. Select all that apply. a) Suzuki coupling b) Heck reaction c) Negishi coupling d) Lithium dialkyl cuprate reagents
QUESTION THREE (20 MARKS) The enzyme malate dehydrogenase (MDIH) catalyses the following reaction: Malate +NADoxaloacetate + NADH a) Which of the six major groups of enzymes (oxidoreductases, transferases, hydrolases s] l lyases, isomerases and ligases) does MDH belong to? Explain your answer. 2 mark b) What equipment would you use to assay this reaction; what would you measure and why 14 Marks] c) Malate dehydrogenase from pig liver mitochondria has a K M of 0.3 mM malate. Sketch a graph...
There are two sets of reactions in glycolysis in which phosphate intermediates are synthesized in the first reaction and their energy harvested as ATP in the second reaction. Part A Identify the two sets of reactions. Check all that apply. O Step 1. Phosphorylation Step 2. Isomenzation Step 3. Phosphorylation Step 4. Cleavage Step 5, Isomerization Step 6, Oxidation and Phosphorylaton Step 7. Phosphate Transfer Step 8. Isomerization Step 9, Dehydration C) □ a Step 10. Phosphate Transfer We were...
The central dogma of molecular biology consists of which of the following steps? a) Ribosomes are involved in the translation process Ob) RNA is translated into proteins O c) All of the above d) DNA is transcribed into RNA e) The enzyme RNA polymerase is involved in transcription Ribosomes bind protein and synthesize RNA. O a) True b) False Question 9 (3 points) Lysosomes use_ enzymes to carry out_ in -- -- polymers. reactions that break bonds O a) acid...
Question 2 2.5 pts Which of the following statements is (are) true about enzyme-catalyzed reactions? The reaction is faster than the same reaction in the absence of the enzyme. The free energy change of the reaction is opposite from the reaction in the absence of the enzyme. The reaction always goes in the direction toward chemical equilibrium. O A and B only. O A, B, and C.
Which of the following is not true? Catalytic converters can facilitate both oxidation and reduction reactions simultaneously. Catalytic converters that reduce the nitrogen in NO can also reduce the sulfur in SO2, resulting in production of the toxic gas H2S when sulfur is present in the fuel. Reduction of the nitrogen in NO (to yield N2 and O2) is energetically favorable, but because the activation energy is high, the reaction must either be catalyzed or done at high temperatures to...