Choose an enzyme and tell its function and what substrate it works on.
1. Enzymes are biocatalyst, they catlaysed the speed of bio-chemical reactions taking place in our body.
2. There are many enzymes one of which is amylase present in saliva, it breaks down starch molecule into glucose and maltose which are smaller molecule
3. Amylase works on starch
Choose an enzyme and tell its function and what substrate it works on.
All of the following apply to enzyme structure and function EXCEPT: (choose what does not apply to the question) A. enzyme active sites function to lower the activation energy of substrate molecules B. enzymes may require coenzymes that change the shape of the active site C. enzymes increase the speed of chemical reactions D. enzymes may have allosteric sites that are used to regulate substrate-active site binding E. enzymes may require cofactors such as Ca++ that improve the binding of...
Problem 3: A) Draw the mechanistic modifications associated with chymotripsin enzyme and its substrate up to the formation of acyl enzyme intermediate. Specify the role of each of the amino acids in the catalytic triad. B) Provide a Michaelis-Menten rate-law equation. Subsequently, on the same graph draw Lineweaver-Burk plots for i) enzyme which is not inhibited: ii) enzyme inhibited by a non-competitive inhibitor, C) The Km and kcat for hexokinase with as a glucose substarte are 5-10 M and 8-10²...
df Match the term for a type of enzyme to its correct definition. < Transferases [Choose 733 Isomerases [Choose) Ligases [Choose] tion Hydrolases [Choose ent Oxidore [Choose) Transfer electrons from one substrate to another. Cleave bonds in molecules with the addition of water. Catalyze the formation of bonds with the inpuit of ATP and the removal of water. Change a substrate to its isomeric form. Transfer functional groups from one sunstrate to another. • Previc
- Vmax is a kinetic property associated with an enzyme. Describe what occurs when an enzyme reaches its Vmax. - Km is also another intrinsic property of an enzyme. Practically, what does the Km tell about how an enzyme interacts with its substrate?
Enzyme X has a Km for substrate A which is twice as large as its Km for substrate B. If the enzyme is added to a solution containing equal, but low concentrations of A and B and Vmax for A and B are equal: substrate A will be used at a rate equal to substrate B substrate A will be used at a rate greater than substrate substrate B will be used at a rate greater than substrate A. substrate...
Consider an enzyme with the following properties: – Km = 0.0050 M At what substrate conc. would the enzyme operate at one-fourth of its maximum rate? At a given substrate conc. (e.g., ½Km) what would the rate be as a fraction of Vmax?
5. The Km of an enzyme of an enzyme-catalyzed reaction is 6.5 uM. What substrate concentration will be required to obtain 55% of Vmax for this enzyme? (10 pts)
ATCase is an important enzyme in DNA replication. a) What does this enzyme do and what are its substrates? b) This enzyme demonstrates feedback regulation. Describe its quaternary structure in this regard. c) Besides substrate(s) and product, what other molecules are involved in the feedback regulation of ATCase? Describe their function and how they interact?
ATCase is an important enzyme in DNA replication. a) What does this enzyme do and what are its substrates? b) This enzyme demonstrates feedback regulation. Describe its quaternary structure in this regard. c) Besides substrate(s) and product, what other molecules are involved in the feedback regulation of ATCase? Describe their function and how they interact?
Is more binding energy released when an enzyme encounters its substrate or when an antibody encounters it eliciting antigen? What is the implication here?