18 Questions
What makes enzymes different from most other catalysts?
They are highly specific
Which of the following is true about enzyme inhibitors?
They decrease enzyme activity
What is the main effect of enzyme activators on enzyme activity?
Increase activity
Which statement is true about enzyme catalysis?
Enzymes make reactions occur many times faster than usual
What is a common feature of enzymes in terms of reaction specificity?
They exhibit high specificity with few side products
How can the activity of enzymes be regulated?
Through cofactors and inhibitors
What is the reason behind the unusual amino acid composition of collagen being unsuited for alpha helices or beta sheets?
The high content of Glycine and Proline
Which amino acid residues make up approximately 30% of the residues in collagen?
Glycine and Proline
How are the hydroxylated amino acids in collagen synthesized?
Post-translationally
In which protein structure are long stretches of Gly-Pro-(Pro/HyP) commonly found?
Collagen triple helix
What type of secondary structure is predominantly observed in myohemerythrin?
Alpha helix
Which type of proteins show structural diversity reflecting functional diversity?
Globular proteins
What are some denaturants that can lead to protein unfolding?
Temperature, pH, organic solvents
Which denaturant is commonly used in chemical denaturation of proteins?
Urea
What is the main factor contributing to thermal denaturation of proteins?
Increase in temperature
Enzymes accelerate chemical reactions by:
Lowering the activation energy
Enzymes are typically named based on:
The reaction they catalyze
The suffix -ase is usually added to enzyme names based on:
The name of the substrate or type of reaction
Test your knowledge on enzymes, catalysts that can greatly accelerate chemical reactions. Learn about enzyme specificity, factors affecting enzyme activity, inhibitors, activators, and their impact on biochemical processes.
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