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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
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
                is the total of all the chemical reactions an organism needs to survive.
  1. Metabolism
  2. Catabolism
  3. Anabolism
  4. Chemistry
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
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
What are the products of cellular respiration?
  1. carbon dioxide
  2. water
  3. energy
  4. all of the above
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
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
Which process commonly occurs in plants?
  1. photosynthesis only
  2. cellular respiration only
  3. photosynthesis and cellular respiration
  4. adhesion and cohesion
  5. none of the above
Grade 10 Biochemical Pathways
What is being cycled between cellular respiration and photosynthesis?
  1. energy
  2. matter
  3. matter and energy
  4. nothing
Grade 10 Biochemical Pathways
The function of cellular respiration is to
  1. reduce [math]CO_2[/math].
  2. extract [math]CO_2[/math] from the atmosphere.
  3. synthesize macromolecules from monomers.
  4. extract usable energy from glucose.
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
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
Which statement BEST explains the difference between how animals and plants exchange gases with their environment?
  1. Animals use only photosynthesis, while plants use both photosynthesis and respiration.
  2. Animals use only respiration, while plants use both photosynthesis and respiration.
  3. Animals use both photosynthesis and respiration, while plants use only respiration.
  4. Animals use both photosynthesis and respiration, while plants use only photosynthesis.
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
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