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Ninth Grade (Grade 9) Biochemistry Questions

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Grade 9 Biochemical Pathways
The process yeast carry out that causes bread dough to rise is                         .
  1. alcoholic fermentation
  2. cellular respiration
  3. lactic acid fermentation
  4. aerobic fermentation
Grade 9 Biochemical Pathways
Grade 9 Biochemical Pathways
Which are typically products of cellular respiration?
  1. carbon dioxide and water
  2. oxygen and carbon dioxide
  3. water and glucose
  4. glucose and oxygen
Grade 9 Biochemical Pathways
Which are typically products of photosynthesis?
  1. oxygen and carbon dioxide
  2. glucose and oxygen
  3. carbon dioxide and water
  4. water and glucose
Grade 9 Biochemical Pathways
Which correctly describes the purpose of photosynthesis?
  1. to release energy by decomposing glucose
  2. to store energy in the form of carbon dioxide
  3. to use sunlight energy to make sugars
  4. to create water for hydration
Grade 9 Biochemical Pathways
Which most accurately describes the purpose of cellular respiration?
  1. to decompose glucose into energy that can be used for cellular functions
  2. to decompose usable energy into smaller parts
  3. to decompose different types of substances to be used to construct other parts of the cell
  4. all of the above
Grade 9 Macromolecules
Grade 9 Biochemical Pathways
Grade 9 Macromolecules
Phospholipids are the primary component of
  1. cell membranes.
  2. cell walls.
  3. ribosomes.
  4. steroids.
Grade 9 Macromolecules
The substrate binds to the enzyme at the
  1. neuroreceptor.
  2. active site.
  3. reception area.
  4. receiving site.
Grade 9 Macromolecules

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Grade 9 Biochemical Pathways
Photosynthesis is an instance of
  1. homeostasis.
  2. reproduction.
  3. metabolism.
  4. growth and development.
  5. cell structure.
Grade 9 Macromolecules
The reactants in an enzyme-catalyzed reaction are called the
  1. active sites.
  2. elements.
  3. inhibitors.
  4. substrates.
Grade 9 Macromolecules
What is the primary purpose and function of enzymes, in the context of reactions that occur within living cells?
  1. They lower the active site energy of the reaction.
  2. They lower the speed of the reaction.
  3. They lower the temperature of the reaction.
  4. They lower the activation energy of the reaction.
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