S. Two algal species utilize bre in photosynthesrt proteins to take up carbon di
ID: 202800 • Letter: S
Question
S. Two algal species utilize bre in photosynthesrt proteins to take up carbon dioxide fo proteins in species A and B are different n photosynthesis. The kinetics erent transport proteins to take up carbon dioxide for transport of carbon dioxide uptake by the transport Species A 1000 mM Species B 10 mM 1000 mmol/min 100 mmol/min Assuming that that rate of carbon dioxide uptake is the rate-limiting step in hotosyntheti carbon dioxide is: 5 mM? 100 mM? 2000 mM? c growth, which algal species will grow faster if the concentration of Inhibitors reversible inhibitors are either competitive kno of enzymes can be either reversible or irreversible. In addition, most or noncompetitive. Based on what you w about enzyme inhibition, classify the following examples as irreversible, competitive, or noncompetitive enzyme inhibition A) competitive B) noncompetitive C) irreversible 1) Disopropyl fluorophosphate binds to acetylcholinesterase and permanently inactivates the enzyme. Paralysis results 2) A drug binds to the active site of an enzyme but disassociates and leaves the enzyme active. 3) A toxin binds to the surface of an enzyme. The enzyme then binds the substrate, but no product is produced. The toxin may disassociate and the enzyme wil become active again 4) Vitamin K is a coenzyme involved in blood clotting. An anticoagulant drug binds at the site of vitamin K bonding, blocking vitamin K binding and preventing clotting. Clotting resumes after the patient stops taking the drug 5) Aspirin binds to prostaglandin synthetase and permanently stops its abili produce prostaglandin.Explanation / Answer
1. Disopropyl fluorophosphate binds to acetylcholinesterase and permanently inactivates the enzyme. Paralysis results. - irreversible inhibition as it would render the enzymes permanently inactive.
2. A drug binds to the active site of an enzyme but disassociates and leaves the enzyme active. - competitive inhibition as the binding of the drug does not allow the drug to be active, but the drug is active after the removal of the drug,
3. A toxin binds to the surface of an enzyme. The enzyme then binds the substrate, but no product is produced. The toxin may dissociate and allow for product formation. - the mode of inhibition is non competitive inhibition as well as reversible inhibition. Toxins are binding to the enzyme and this is not causing any trouble to the enzyme. As the toxin would dissociate, the products would start forming.
4. Vitamin K is a coenzyme involved in blood clotting. An anticoagulant drug binds at the site of vitamin K bonding , blocking vitamin K binding and preventing clotting. Clotting resumes after the patient stops taking the drug. - reversible and competitive
5. Aspirin binds to prostagladin synthetase and permanently stops its ability to produce prostaglandin- Irreversible.
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