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Search Results for enzymes - All Grades

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Grade 10 DNA, RNA, and Genetics
An enzyme that cuts DNA at a specific sequence of nucleotides is a
  1. scissor enzyme.
  2. sequence enzyme.
  3. ligase enzyme
  4. restriction enzyme.
Grade 12 Macromolecules
Drugs, pathogens, pesticides, and metabolic imbalances are examples of
  1. enzyme activators.
  2. enzyme inhibitors.
  3. enzyme reaction.
  4. enzyme converters.
College Anatomy and Physiology
Enzymes
  1. are proteins
  2. can promote the formation of new molecules
  3. are molecules that control chemical reactions
  4. can break other molecules apart
  5. all of the above are correct
Grade 11 Reactions
Enzymes are                       .
  1. homogenous catalysts
  2. heterogenous catalysts
  3. acid catalysts
  4. base catalysts
Grade 9 Meal Planning
Identify what protein provides?
  1. structure, enzymes
  2. enzymes, transportation
  3. structure, transportation, enzymes
  4. enzymes, infection, structure
College Culinary Skills
Grade 10 Macromolecules
Which statement about enzymes is NOT true?
  1. Enzymes work best at a specified pH.
  2. All enzymes work inside cells.
  3. Enzymes are proteins.
  4. Enzymes are organic catalysts.
College Macromolecules
Which of the following statements about enzymes is FALSE?
  1. enzymes are highly specific.
  2. Enzymes do not affect equilibrium.
  3. Enzymes lower activation energy.
  4. Enzymes can be recycled.
  5. Enzymes can convert an endergonic to an exergonic reaction.
Grade 10 DNA, RNA, and Genetics
The enzyme helicase
  1. copies DNA.
  2. copies RNA.
  3. unzips the double-stranded DNA.
  4. adds complementary base pairs to DNA.
Grade 12 Macromolecules
Are enzymes reusable?
  1. yes
  2. no
  3. sometimes
Grade 10 Macromolecules
Grade 10 Culinary Skills
Identify two things that occur when food is frozen.
  1. spoilage and enzyme activity slows
  2. spoilage slows and enzyme activity stops
  3. spoilage and enzyme activity stops
  4. spoilage stops and enzyme activity slows
Grade 12 Macromolecules
Which of these describes a substrate?
  1. part of the enzyme that substrate molecules fit into
  2. molecule that the enzyme works on
  3. what the enzyme helps produce from the reaction
Grade 10 Macromolecules
Enzymes in your body act as catalysts. Thus, the role of enzymes is to
  1. help you breathe.
  2. increase the rate of chemical reactions.
  3. inhibit chemical reactions.
  4. decrease the rate of chemical reactions.
Grade 10 Macromolecules
Grade 10 Macromolecules
With an enzyme the activation energy is
  1. lowered.
  2. raised.
  3. not affected.
College Nervous and Endocrine Systems
                              is a hormone, whereas                                is an enzyme
  1. enterokinase, pepsin
  2. gastrin, secretin
  3. gastrin, cholecystokinin (CCK)
  4. gastric lipase, histamine
  5. secretin, pepsin
Grade 9 Macromolecules
The substrate binds to the enzyme at the
  1. neuroreceptor.
  2. active site.
  3. reception area.
  4. receiving site.
Grade 11 Respiration, Digestion, and Excretion
Which secretion is NOT an enzyme?
  1. amylase
  2. bile
  3. protease
  4. lipase
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