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- Part A Why is covalent modification used to regulate the activity of an enzyme? Match...
Explain the basis for the following statement: As a coenzyme, pyridoxal phosphate is covalently bound to enzymes with which it functions, yet during catalysis the coenzyme is not covalently bound. Match the words in the left column to the appropriate blanks in the sentences on the right. Reset Help e-amino carboxylic acid PLP forms a covalent between the carbon of the coenzyme and an group of a lysine residue in the active site of the enzyme. This bond must be...
The activity of many enzymes is regulated by reversible covalent modifications. Kinases add a phosphate group from an ATP to a specific hydroxyl group on an amino acid residue within an enzyme. Which of the following amino acids can be phosphorylated by a kinase? (Select all that apply) Cys His Tyr Thr Phe Ser Val
Part B Use the structures given in the cycle shown before this part identify the enzymes involved in each step of the citric acid cycle by completing each sentence Match the words in the left column to the appropriate blanks in the sentences on the right. View Available Hint(s) Reset Help isocitrate dehydrogenase aconitase citrate synthase fumarate hydratase succinate dehydrogenase succinyl-CoA synthetase a-ketoglutarate dehydrogenase malate dehydrogenase In step 1, oxaloacetate condenses with acetyl-CoA to form citrate, which is catalyzed by...
2. hypothesize the best conditions (pH and temperature) under which the enzyme chymotrypsin functions with an appropriate reference. also, hypothesize what will occur in the presence of an inhibitor and the type of inhibition. EXPERIMENT 5: ENZYME ACTIVITY WITH a-CHYMOTRYPSIN Prelab Assignment 1. Prepare a flow chart, covering one half of the experimental work (either part A and C if your lab bench is on the window side of the lab or part B and D if your locker is...
Part A Complete the sentences to explain why long-chain fatty acids cannot pass the mitochondrial membrane via diffusion, and the mechanism by which the cells transport them. Match the words in the left column to the appropriate blanks in the sentences on the right. View Available Hint(s) Reset Help translocase polar acyl-CoA synthetase Long-chain fatty acids have an alkyl chain of more than 10 carbon atoms. Fatty acids with alkyl chains of this length are characterized as in terms of...
please answer all the questions Question 8 0 / 1 pts Our understanding of RNA was non-existent until 2000 started with the identification of a tRNA which suggested a method of converting DNA to protein began to identify that DNA-->protein--> RNA stopped growing after it's original discovery in the 70s IncorrectQuestion 10 0 / 1 pts Enzymes allow for chemical reactions to occur in the cell that may not naturally occur at the right place at...