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Search Results for enzymes - All Grades

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Grade 9 Macromolecules
A substrate binds to an enzyme at the
  1. active site.
  2. cell membrane.
  3. chemical reaction site.
Grade 10 Macromolecules
An enzyme's activation energy is
  1. heat energy.
  2. a substrate.
  3. the energy needed to cause a chemical reaction.
Grade 11 Macromolecules
Grade 11 Respiration, Digestion, and Excretion
Which secretion is NOT an enzyme?
  1. amylase
  2. bile
  3. protease
  4. lipase
Grade 7 Respiration, Digestion, and Excretion
Grade 12 Macromolecules
How are enzymes denatured?
  1. water
  2. pH
  3. temperature
  4. temperature and pH
Grade 9 Respiration, Digestion, and Excretion
College Macromolecules
How does a competitive inhibitor of an enzyme work?
  1. fitting into the enzyme's active site
  2. fitting into the allosteric site of the enzyme
  3. attaching itself to the substrate, thereby preventing the enzyme from making contact with substrate
  4. increasing the activation energy of the enzyme-catalyzed reaction
Grade 9 Organic Chemistry
Enzymes are found in household detergents. Many manufacturers claim they will get rid of grease, making your clothes look cleaner. Which of the following statements is true concerning enzymes that may suggest why manufacturers use them in their products?
  1. All enzymes work on dirt and grease.
  2. Enzymes are specific as to what they work on.
  3. Enzymes cannot be used over and over again.
  4. One type of enzyme can work on all types of chemicals.
None Macromolecules
An enzyme speeds up a reaction by                                
  1. lowering the activation energy.
  2. raising the activation energy.
  3. releasing energy.
  4. absorbing energy.
Grade 10 Macromolecules
Which chemical is classified as an enzyme?
  1. galatose
  2. lipid
  3. protease
  4. manganese dioxide
Grade 7 Macromolecules
What do enzymes do?
  1. produce proteins
  2. add acids
  3. act as catalysts
  4. add bases
Grade 10 Macromolecules
Grade 9 Skin, Skeleton, and Muscles
The deepest layer of skin is the
  1. enzymes.
  2. esophagus.
  3. hypodermis.
  4. marrow.
Grade 6 Cell Structure and Function
The jelly-like substance in the cell is
  1. a cell.
  2. cytoplasm.
  3. dermis.
  4. an enzyme.
Grade 7 Food Chains and Webs
                are organisms that cannot make food.
  1. Biodegradables
  2. Consumers
  3. Producers
  4. Enzymes
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