What is a substance called if it speeds up a chemical reaction?
  • reusable
  • catalyst
  • specific
  • fragile
In the diagram, what is letter A? 
sc-8 sb-1-Metabolism & Enzymesimg_no 87.jpg
  • product
  • substrate
  • enzyme-substrate complex
  • active site
Enzymes are...
  • nucleic acids
  • proteins
  • lipids
  • carbohydrates
What is the function of an enzyme?
  • enzymes break themselves into small pieces
  • enzymes slow down chemical reactions
  • enzymes speed up chemical reactions
  • enzymes combine products to form reactants 
With what 3 letters do enzymes typically end?
  • -ose
  • -ase
  • -ese
  • -tic
Where do substrates bind on an enzyme?
  • voltage-gated channels
  • surface receptor
  • calcium channels
  • active site
The "lock and key hypothesis" attempts to explain the mechanism of?
  • Vacuole formation
  • Pinocytosis
  • Sharing of electrons
  • Enzyme specificity 
Which substrate would this enzyme catalyze?
sc-8 sb-1-Metabolism & Enzymesimg_no 88.jpg
  • Δ
  • σ
  • ∅
  • μ
What makes an enzyme substrate specific?
  • Size
  • Shape
  • Name
  • Location it is found in
Enzymes need certain environmental conditions in order to function properly.  What happens when enzymes are heated to a high temperature?
  • they die
  • they denature
  • they change their amino acid sequence
  • they work better
How do enzymes increase the speed of chemical reactions?
  • reducing the number of products   
  • reducing the activation energy
  • increasing the temperature of the cell
  • increasing the concentration of reactants 
After the enzyme and substrate bind together and perform the reaction, what does the substrate become?
  • a substrate
  • an enzyme
  • a product
  • an active site
can a change in pH alter the active site of an enzyme
  • yes
  • no
Which of these is NOT true?
  • Enzymes can denature (change shape) when the temperature gets too high.
  • Enzymes can only be used once in a chemical reaction. 
  • Extreme pH can denature enzymes.
  • Enzymes speed up chemical reactions. 
What happens when enzymes are heated to a high temperature?
  • The enzymes die.
  • The shapes of the enzyme are altered or denatured
  • The enzymes' amino acid sequence changes.
  • The enzymes remain the same
Venus flytraps produce chemicals that break down insects into usable compounds. These chemicals are most likely:
sc-8 sb-1-Metabolism & Enzymesimg_no 89.jpg
  • Hormones
  • Lipids
  • Enzymes
  • Carbohydrates
Which chemical is classified as an enzyme?
  • Galactose
  • Lipid
  • Protease
  • Manganese dioxide
What is indicated by letter A?
sc-8 sb-1-Metabolism & Enzymesimg_no 90.jpg
  • enzyme
  • product
  • substrate
  • active site
How do competitive inhibitors affect enzymes?
sc-8 sb-1-Metabolism & Enzymesimg_no 91.jpg
  • It binds to the active site, blocking the substrate
  • It changes the shape of the enzyme
  • It increases the activation energy
  • It decreases the activation energy
Which of these do NOT affect enzyme activity?
  • Temperature
  • pH
  • Competitive Inhibitors
  • Carbohydrates
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