WorksheetsEnzymes
Total questions: 19
Worksheet time: 10mins
In this example, an enzyme is assisting in the process of:
Hydrolysis
Dehydration synthesis
Protein synthesis
An enzyme's function is to ____________ the rate of chemical reactions like dehydration synthesis and hydrolysis.
Increase
Decrease
What would happen if enzymes were not available in a living organism?
Reactions would be so slow that the organism may die before the reaction took place
Reactions would be so fast that the organism may die after the reaction took place
Reactions would never happen
People would be able to drink more milk
Enzymes are made up of:
Proteins
Carbohydrates
Lipids
Nucleic Acids
Enzymes are called ___________ because they speed up reactions without being changed.
Catalysts
Untouchables
Products
Reactants
Enzymes are __________, meaning each enzyme can only be used for one particular reaction.
Specific
Interchangeable
Nonspecific
Changeable
True or False: Enzymes can be used over and over without being changed.
True
False
A substance with which the enzyme reacts.
Substrate
Active site
Enzyme-substrate complex
Pockets on enzyme's surface that fit into substrates.
Substrate site
Active site
Lock
Enzyme-substrate complex
Substrate comes into temporary contact with enzyme.
Enzyme-substrate complex
Activeness
Active site
Lock and key
In the "Lock and Key" model of enzyme action:
Substrates fit exactly into active site on the enzyme
Active site on enzyme changes shape to grasp the substrate at the active site
In the "Induced Fit" model of enzyme action:
Substrates fit exactly into active site on the enzyme
Active site on enzyme changes shape to grasp the substrate at the active site.
Most enzyme names end in __________, and the rest of the name comes from the substrate.
OSE
ASE
USE
ISE
Each enzyme has an optimum temperature at which its rate is the greatest. Above the optimum temperature, enzymes distort (change shape), called ____________.
Denaturing
Morphing
Shape-shifting
Melting
True or False: Each enzyme works best an an optimum pH.
True
False
The rate of enzyme action increases as more ___________ are added.
Enzymes
Substrates
Active sites
The rate of enzyme action reaches a __________ when all substrates are occupied by enzymes.
Maximum
Minimum
The rate of enzyme action increases as more ____________ are added.
Enzymes
Substrates
Active sites
True or False: The rate of enzyme action reaches a maximum when all enzymes are occupied by substrates.
True
False
