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Ninth Grade (Grade 9) Biochemical Pathways Questions

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Grade 9 Biochemical Pathways
Cellular respiration begins with a pathway called
  1. glycolysis.
  2. telophase.
  3. the Krebs cycle.
  4. the electron transport chain.
Grade 9 Biochemical Pathways
Which elements are usually found in the majority of living things?
  1. oxygen, carbon, hydrogen, and calcium
  2. oxygen, carbon, hydrogen, and nitrogen
  3. oxygen, carbon dioxide, hydrogen, and nitrogen
  4. oxygen, carbon, sodium, and nitrogen
Grade 9 Biochemical Pathways
Oxygen made during photosynthesis results from the
  1. absorption of light.
  2. splitting of water molecules.
  3. mitochondrial membranes.
  4. splitting of carbon dioxide molecules.
Grade 9 Biochemical Pathways
What are the two kinds of fermentation?
  1. alcohol and glucose
  2. lactic acid and alcohol
  3. alcoholic acid and yeast
  4. photosynthesis and respiration
Grade 9 Biochemical Pathways
Photosynthesis occurs in
  1. plants.
  2. some protists.
  3. some bacteria.
  4. all of the above.
Grade 9 Biochemical Pathways
Which process is not anaerobic?
  1. glycolysis
  2. fermentation
  3. photosynthesis
  4. the Krebs cycle
Grade 9 Biochemical Pathways
Inside chloroplasts, chlorophyll is found.
  1. True
  2. False
Grade 9 Biochemical Pathways
The rate of photosynthesis can be increased with
  1. a decrease in carbon dioxide.
  2. an increase in light intensity.
  3. the closing of stomata.
  4. an increase in sugar.
Grade 9 Biochemical Pathways
The process that obtains energy from food when oxygen is present is
  1. ATP synthase.
  2. photosynthesis.
  3. cellular respiration.
  4. anaerobic respiration.
Grade 9 Biochemical Pathways
A series of carrier proteins in the inner membrane of the mitochondria is called
  1. glycolysis.
  2. fermentation.
  3. cellular respiration.
  4. the electron transport chain.
Grade 9 Biochemical Pathways
In what component of the chloroplast does the light-dependent reaction happen?
  1. thylakoid
  2. stroma
  3. inner membrane
  4. outer membrane
Grade 9 Biochemical Pathways
During what stage of photosynthesis is carbon dioxide used for carbon fixation?
  1. Photosystem I
  2. Photosystem II
  3. the Calvin cycle
  4. the electron transport chain
Grade 9 Biochemical Pathways
What are the products of cellular respiration?
  1. sugar + oxygen
  2. ATP + oxygen + water
  3. ATP + water + carbon dioxide
  4. oxygen + carbon dioxide + ATP
Grade 9 Biochemical Pathways
The elements or compounds produced by a chemical reaction are
  1. catalysts.
  2. products.
  3. reactants.
  4. activation energies.
Grade 9 Biochemical Pathways
What is the chemical equation for photosynthesis?
  1. CO2+H2O→C6H12O6+6O2
  2. 5CO2+7H2O→C6H12O6+6O2
  3. 6CO2+6H2O→C6H12O6+6O2
  4. C6H12O6+6O2→6CO2+6H2O
Grade 9 Biochemical Pathways
The process by which cells obtain energy from food is
  1. cellular respiration.
  2. semipermeable.
  3. osmosis.
  4. diffusion.
Grade 9 Biochemical Pathways
Photosynthesis is the process in which a plant
  1. produces a sugar called glucose.
  2. converts sunlight to chemical energy.
  3. utilizes carbon dioxide and releases oxygen.
  4. all of the above.
Grade 9 Biochemical Pathways
What are the products of photosynthesis?
  1. sugar + oxygen
  2. ATP + water + carbon dioxide
  3. oxygen + carbon dioxide
  4. carbon dioxide + sugar + ATP
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