What determines the shape of a protein?
The amino acid sequence of the protein
The function the protein carries out
The location in the cell where protein is assembled
Which of the following is not a function of protein molecules?
Acting as enzymes
Carrying chemical messages from one part of the body to another
Storing genetic information
Which type of substance are enzymes made of?
Carbohydrate
Fat
Protein
What is the name of a substance that speeds up the rate of a chemical reaction, but is unchanged by the process?
Catalyst
Product
Substrate
What is the name of a substance upon which an enzyme acts?
Biological catalyst
What happens during an enzyme catalysed reaction?
An enzyme binds to the active site of its specific substrate and the reaction occurs
A specific substrate binds to the active site of an enzyme and the reaction occurs
The active site of a specific substrate binds to the active site of an enzyme and the reaction occurs
Which word describes the relationship between the shape of the active site of an enzyme and the shape of its specific substrate?
Complementary
Denatured
Weak
What term describes the conditions in which an enzyme is most active?
Optimum
Specific
What effect does denaturation have on the activity of an enzyme?
Increased
Decreased
No change
The graph shows the effect of pH on the time taken for an enzyme-catalysed reaction to occur.
What is the optimum pH of the enzyme?
2
8
10