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Eighth Grade (Grade 8) Biochemistry Questions

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Grade 8 Biochemical Pathways
What is the green pigment that traps energy from sunlight?
  1. chloroplast
  2. ATP
  3. chlorophyll
  4. mitochondria
Grade 8 Macromolecules
What are the two groups into which carbohydrates are divided?
  1. micro and macro
  2. simple and trace
  3. simple and complex
  4. none of the above
Grade 8 Biochemical Pathways
Plants take in energy by absorbing
  1. high-energy carbohydrates.
  2. chlorophyll.
  3. chloroplasts.
  4. sunlight.
Grade 8 Biochemical Pathways
What is a colored chemical that absorbs light?
  1. stoma
  2. pigment
  3. autotroph
  4. respiration
Grade 8 Biochemical Pathways
What are the products of photosynthesis?
  1. carbon dioxide and oxygen
  2. oxygen and glucose
  3. glucose and water
  4. water and carbon dioxide
Grade 8 Biochemical Pathways
Where does lactic acid fermentation occur?
  1. bread that is rising
  2. any environment without oxygen
  3. muscle cells
  4. mitochondria
Grade 8 Biochemical Pathways
What is the main photosynthetic pigment in chloroplasts?
  1. energy
  2. stomata
  3. chlorophyll
  4. cellulose
Grade 8 Biochemical Pathways
Where does the second stage of cellular respiration take place?
  1. mitochondria
  2. nucleus
  3. cytoplasm
  4. vacuole
Grade 8 Biochemical Pathways
Which compound is produced by the Calvin cycle?
  1. oxygen gas
  2. ADP
  3. sugar
  4. carbon dioxide
Grade 8 Biochemical Pathways
During photosynthesis, carbon dioxide + water →
  1. glucose + oxygen.
  2. carbohydrates + water.
  3. mineral salts + oxygen.
  4. carbohydrates + carbon dioxide.
Grade 8 Macromolecules
What is C6H12O6?
  1. glucose
  2. chlorophyll
  3. carbon dioxide
  4. water
Grade 8 Biochemical Pathways
How do some bacteria obtain energy?
  1. other bacteria
  2. leptin
  3. organs
  4. photosynthesis
Grade 8 Biochemical Pathways
Photosynthesis happens inside the mitochondria.
  1. True
  2. False
Grade 8 Biochemical Pathways
What enables nitrates to form?
  1. lightning
  2. nitrifying bacteria
  3. nitrogen-fixing bacteria
  4. all of the above
Grade 8 Macromolecules
When                  are put together, the molecule is called a nucleotide.
  1. sugars
  2. bases
  3. phosphates
  4. all of the above
Grade 8 Biochemical Pathways
Where does the first stage of cellular respiration take place?
  1. mitochondria
  2. nucleus
  3. cytoplasm
  4. vacuole
Grade 8 Biochemical Pathways
What chemical can be used to test a leaf for starch?
  1. iodine
  2. limewater
  3. ethanol
  4. hydrochloric acid
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