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Eighth Grade (Grade 8) Biochemical Pathways Questions

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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 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 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
Grade 8 Biochemical Pathways
Metabolism is a complex series of chemical processes that converts food to energy and establishes the rate at which your body burns calories. What affects this rate?
  1. age, body mass, job status
  2. physical activity, age, gender, body mass
  3. family size, physical activity, age
  4. age, bone structure, quantity of food consumed
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