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Ninth Grade (Grade 9) Biochemistry Questions

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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 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

This question is a part of a group with common instructions. View group »

Grade 9 Biochemical Pathways
Which process is NOT a stage of cell respiration?
  1. Calvin cycle
  2. Krebs cycle
  3. glycolysis
  4. electron transport chain
Grade 9 Macromolecules
The reactants in an enzyme-catalyzed reaction are called the
  1. active sites.
  2. elements.
  3. inhibitors.
  4. substrates.
Grade 9 Biochemical Pathways
Which statement describes cellular respiration?
  1. the process of decomposing chemical energy stored in bonds into energy that can be used by the cell
  2. the process of creating food for the cell
  3. the process of combining oxygen and water to produce another substance to be transported
  4. the process of making proteins
Grade 9 Macromolecules
How do enzymes help chemical reactions to occur?
  1. They speed up reactions by adding more substrates to react with enzymes.
  2. They slow down reactions by increasing the activation energy.
  3. They speed up chemical reactions by lowering the activation energy required.
  4. They slow down reactions by changing the overall temperature of the reaction.
Grade 9 Macromolecules
The energy needed to start a chemical reaction is called the
  1. lightning.
  2. heat energy.
  3. reaction energy.
  4. activation energy.
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