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Twelfth Grade (Grade 12) Biochemical Pathways Questions

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Grade 12 Biochemical Pathways
How do enzymes make reactions go faster?
  1. They lower activation energy
  2. They raise the activation energy
  3. They supply extra reactants
  4. They limit the amount products in the reaction
Grade 12 Biochemical Pathways
Which process would require an input of energy?
  1. exergonic reactions
  2. endergonic reactions
  3. hydrolysis
  4. cellular respiration
Grade 12 Biochemical Pathways
Energy is released from ATP when                             .
  1. a phosphate group is added
  2. amino acids bond to proteins
  3. a phosphate group is removed
  4. it is heated by the sun
Grade 12 Biochemical Pathways
Which of the following best summarizes the relationship between dehydration reactions and hydrolysis?
  1. dehydration assembles and hydrolysis breaks down
  2. Dehydration reactions can occur only after hydrolysis.
  3. Dehydration reactions assemble polymers, and hydrolysis breaks down polymers.
  4. dehydration releases energy and so does hydrolysis
Grade 12 Biochemical Pathways
The pigment chlorophyll mostly absorbs                   .
  1. moonlight
  2. red and blue light
  3. green light
  4. all visible light
Grade 12 Biochemical Pathways
How do living organisms create macromolecules, organelles, cells, tissues, and complex higher-order structures?
  1. Living organisms create order locally, but the energy transformations generate waste heat that increases the entropy of the universe
  2. Living things create order using energy from the sun
  3. The laws of thermodynamics do not apply to any living things
  4. Nothing occurs spontaneously
Grade 12 Biochemical Pathways
Hydrolysis is a reaction in which                                               .
  1. water is added to a polymer and it breaks down
  2. water is used to build polymers from monomers
  3. proteins are made using water
  4. water is taken away from a monomer
Grade 12 Biochemical Pathways
Grade 12 Biochemical Pathways
Grade 12 Biochemical Pathways
Grade 12 Biochemical Pathways
Grade 12 Biochemical Pathways
Grade 12 Biochemical Pathways
Grade 12 Biochemical Pathways
Grade 12 Biochemical Pathways
Grade 12 Biochemical Pathways
What role does oxygen play in cellular respiration?
  1. It is reduced in glycolysis as glucose is oxidized.
  2. It provides electrons to the electron transport chain.
  3. It is required for the production of heat and light.
  4. It serves as the final electron acceptor during the electron transport chain.
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