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Biochemistry Questions - All Grades

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Grade 8 Biochemical Pathways
What is broken down during cellular respiration to release energy?
  1. Glucose
  2. ADP
  3. Water
  4. Carbon dioxide
Grade 8 Biochemical Pathways
Which of the following is TRUE statement about cellular respiration?
  1. Cellular respiration converts energy directly from the Sun into energy stored in chemical bonds.
  2. Cellular respiration cannot occur without sunlight.
  3. Cellular respiration occurs in plant cells and in animal cells.
  4. Cellular respiration is not a cycle with photosynthesis.
Grade 8 Macromolecules
What type of organic substances are fats?
  1. nucleic acids
  2. carbon
  3. proteins
  4. lipids
Grade 10 Macromolecules
Carbohydrates are made up of the three elements of
  1. nitrogen, oxygen, and hydrogen.
  2. carbon, hydrogen, and oxygen.
  3. sulfur, hydrogen, and oxygen.
  4. nitrogen, phosphorus, and oxygen.
Grade 10 Macromolecules
Which biological polymer is made of bonded amino acids?
  1. protein
  2. amino acid
  3. DNA
  4. sugar cube
Grade 11 Biochemical Pathways
Which chemical equation correctly represents photosynthesis?
  1. H2O+CO2+sunlight→O2+glucose
  2. H2O+O2+sunlight→CO2+glucose
  3. O2+glucose→H2O+CO2+energy
  4. CO2+glucose→H2O+O2+energy
Grade 9 Biochemical Pathways
C6H12O6+6O2→6CO2+6H2O+energy is the balanced chemical equation for which process?
  1. Photosynthesis
  2. Glycolysis
  3. Cellular respiration
  4. Krebs cycle
Grade 10 Macromolecules
Which macromolecule holds genetic information?
  1. nucleic acids
  2. carbohydrates
  3. lipids
  4. proteins
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 7 Macromolecules
What do enzymes do?
  1. produce proteins
  2. add acids
  3. act as catalysts
  4. add bases
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 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 6 Biochemical Pathways
Which process occurs when cells break down glucose to release energy?
  1. passive transport
  2. cellular respiration
  3. osmosis
  4. active transport
Grade 10 Macromolecules
A carbohydrate is an organic compound because it contains
  1. phosphorus.
  2. carbon.
  3. hydrogen.
  4. oxygen.
Grade 12 Macromolecules
Are enzymes reusable?
  1. yes
  2. no
  3. sometimes
Grade 4 Biochemical Pathways
Plants take in                         and give off                        .
  1. carbon dioxide; oxygen
  2. helium; oxygen
  3. carbon dioxide; glucose
  4. oxygen; carbon dioxide
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