10 Questions
What does the term 'apoenzyme' refer to?
An enzyme without its cofactor or coenzyme
In the context of enzyme kinetics, what does a higher Km value indicate?
Lower affinity between the enzyme and substrate
How would you describe Reversible Non-competitive Inhibition in terms of enzyme-substrate interaction?
The inhibitor binds to a site outside the active site of the enzyme
What is the role of a biocatalyst in a chemical reaction?
Speeds up the reaction by lowering the activation energy
Which of the following statements is true about enzymatic cofactors?
They act as keys that unlock the enzyme-substrate complex
How do enzymes differ from ribozymes in terms of their classification as biocatalysts?
Enzymes are always proteins, while ribozymes can be RNA molecules
What determines whether an amino acid is in L- or D- configuration?
The position of the amino group (-NH2) relative to the carboxyl group (-COOH) on the carbon chain
What characterizes a Zwitterion?
Consists of nonadjacent regions of charges
What is the significance of reaching the isoelectric point (pI) for an amino acid?
It results in a net charge of zero for the entire molecule
Which structural feature is essential for an amino acid to be considered a Zwitterion?
Having at least one positive and one negative functional group
Test your knowledge on protein modifications like glycosylation and phosphorylation, as well as the quaternary structure of proteins. Identify proteins in the same family based on their primary structure and understand the composition of hemoglobin subunits.
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