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What is TRUE about enzymes?
They make biochemical reactions to proceed spontaneously
They lower the activation energy of a reaction
They are not very specific in their choice of substrates
They are needed in large quantities
To what category of molecules do enzymes belong?
Carbohydrates
Lipids
Nucleic acids
Proteins
What is TRUE about cofactors?
Break hydrogen bonds in proteins
Help facilitate enzyme activity
Increase activation energy
Are composed of proteins
Prosthetic groups are.
Required by all enzymes
Loosely attached with enzymes
Proteins in nature
Tightly bound to the enzyme
When we add more substrate to an already occurring enzymatic reaction and there is no increase in the rate of reaction, what would you predict?
All active site have been occupied by substrate molecules
The enzyme molecules have denatured
More substrate acted as inhibitor
More substrate has disturbed the pH of the medium
Which of these graphs correctly shows the effect of temperature on the rate of an enzyme-controlled reaction?
A
B
C
D