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BCH2011 - Structure and function of cellular biomolecules - S1 2025
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The image below shows a cartoon representation of the structure of part of a protein.
Because this isn't an exam question, I have crudely labelled these (1 to 4) with my best free-hand mouse skills.
Assign the correct label to each number.
The image below shows a cartoon representation of the structure of part of a protein.
Because this isn't an exam question, I have crudely labelled these (1 to 4) with my best free-hand mouse skills.
Assign the correct label to each number.
Shown below is data from an experiment assessing the activity of an enzyme following Michaelis-Menten kinetics.
What would the Vmax (in units of micromolar/min) of this reaction be if one third the amount of enzyme had been used for the experiment?
(Note: do not enter any units. You just need to enter in the numerical value, e.g. 15. Obviously the answer isn't 15 or I wouldn't have written that. I guess I could be weird and try to throw you by writing that and having the answer as actually that. But no, I wouldn't do that to you. Plus, you know the answer isn't 15. You've already worked it out and stopped reading this nonsense I'm still typing...)
The following data were obtained in a study of an enzyme and substrate A, known to follow Michaelis-Menten kinetics:
Estimate Vmax in units of micromolar/min. You do not need to enter unit, only a value.
The following data were obtained in a study of an enzyme and substrate A, known to follow Michaelis-Menten kinetics:
Estimate the Km (in units of micromolar) for the enzyme substrate reaction.
Note: you'll have already seen a question with the same image below. The question order shouldn't be randomised. There are a few questions with this same image.
The image below shows the titration curve for a dipeptide (think what that means).
The pI for this dipeptide is 5.0
What would the average charge of this dipeptide be at a pH of 8?
(You should be able to work this out even without knowing the precise identity of the amino acids.)
Shown below is a titration curve for a dipeptide. (Think about what this means...)
The number of ionisable groups in this dipeptide is:
Note: you'll have already seen a question with the same image below. The question order shouldn't be randomised. There are a few questions with this same image.
The image below shows the titration curve for a dipeptide (think what that means).
The pI for this dipeptide is 5.0
What would the average charge of this dipeptide be at a pH of 1?
(You should be able to work this out even without knowing the precise identity of the amino acids.)
Shown below is a Michaelis-Menten kinetics curve for a reaction carried out using an enzyme concentration of 1 nM (0.001 μM).
What is the kcat value for this enzyme-catalysed reaction?
Type your answer as a number in units of min-1 but do not type the units or any other characters except the number itself.