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Tenth Grade (Grade 10) Biochemical Pathways Questions

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Grade 10 Biochemical Pathways
Living things get the energy they need from
  1. oxygen.
  2. [math]NAD^+[/math].
  3. food.
  4. air.
Grade 10 Biochemical Pathways
Grade 10 Biochemical Pathways
The process of cellular respiration
  1. occurs only in animals.
  2. is performed only by organisms that cannot perform photosynthesis.
  3. occurs in all organisms.
  4. converts chemical energy in food to usable energy (ATP) in all organisms.
Grade 10 Biochemical Pathways
What are the products of cellular respiration?
  1. carbon dioxide
  2. water
  3. energy
  4. all of the above
Grade 10 Biochemical Pathways
Oxygen is released during what part of photosynthesis?
  1. light reactions
  2. Calvin cycle
  3. Kreb's cycle
  4. glycolysis
Grade 10 Biochemical Pathways
Which reaction correctly summarizes cellular respiration?
  1. [math]6 O_2 + C_6H_12O_6 = 6 CO_2 + 6 H_2O + "energy"[/math]
  2. [math]6 CO_2 + C_6H_12O_6 + "energy" = 6 CO_2 + 6 H_2O[/math]
  3. [math]6 CO_2 + 6 H_2O = 6 O_2 + C_6H_6O_6 + "energy"[/math]
  4. [math]6 CO_2 + 6 H_2O + "energy" = 6 O_2 + C_6H_12O_6[/math]
Grade 10 Biochemical Pathways
The most important role of pigments in photosynthesis is to
  1. capture light energy.
  2. store energy.
  3. screen out harmful ultraviolet rays.
  4. catalyze the hydrolysis of water.
Grade 10 Biochemical Pathways
Grade 10 Biochemical Pathways
Most of the oxygen in our atmosphere is present due to
  1. the light dependent reactions of photosynthesis.
  2. the Krebs cycle.
  3. glycolysis.
  4. the Calvin cycle.
  5. fermentation.
Grade 10 Biochemical Pathways
Which molecules are the product of photosynthesis?
  1. carbon dioxide and water
  2. oxygen and glucose
  3. water, carbon dioxide, and ATP
  4. ATP and water
Grade 10 Biochemical Pathways
What are the products of photosynthesis?
  1. oxygen and carbon dioxide
  2. oxygen and glucose
  3. glucose and carbon dioxide
  4. glucose and water
Grade 10 Biochemical Pathways
What description applies to cellular respiration?
  1. is the breakdown of glucose molecules to release energy
  2. takes place in all living organisms
  3. is a step-by-step process
  4. all of the above
Grade 10 Biochemical Pathways
Photosynthesis is the process whereby a plant
  1. converts sunlight into chemical energy.
  2. uses carbon dioxide and releases oxygen.
  3. produces a sugar called glucose.
  4. all of the above
Grade 10 Biochemical Pathways
The formula [math]ENERGY+6CO_2+6H_2OrarrC_6H_12O_6+6O_2[/math] gives the overall products and reactants for
  1. photosynthesis.
  2. cellular respiration.
  3. cellular transport.
  4. the Krebs cycle.
  5. the Calvin cycle.
Grade 10 Biochemical Pathways
What are the stages of cellular respiration?
  1. glycolysis
  2. Krebs cycle
  3. electron transport
  4. all of the above
Grade 10 Biochemical Pathways
Grade 10 Biochemical Pathways
What do both plants and animals use oxygen for?
  1. respiration
  2. breathing
  3. photosynthesis
  4. transpiration
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