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Eleventh Grade (Grade 11) Biochemistry Questions

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Grade 11 Macromolecules
What are the four main groups of organic molecules that combine to build cells and their parts? Select all that apply.
  1. water (hydration)
  2. carbohydrates (energy)
  3. lipids (energy and energy storing)
  4. vitamins and minerals (various functions)
  5. protein (building muscles)
  6. nucleic acids (storing and transmitting genetic information)
Grade 11 Biochemical Pathways
This process releases energy in the cell when there is an insufficient amount of oxygen and can produce lactic acid or alcohol.
  1. Fermentation
  2. Photosynthesis
  3. Calvin cycle
  4. Chemosynthesis
  5. Light-dependent reaction
Grade 11 Biochemical Pathways
The study of the transformation of energy in living organisms is
  1. energy.
  2. bioenergetics.
  3. free energy.
  4. potential energy.
  5. kinetic energy.
Grade 11 Macromolecules
Any protein is an enzyme.
  1. True
  2. False
Grade 11 Macromolecules
The "backbone" of biological molecules is
  1. nitrogen.
  2. carbon.
  3. oxygen.
  4. hydrogen.
Grade 11 Biochemical Pathways
When ATP is changed to generate ADP, energy will be
  1. released for use.
  2. destroyed.
  3. captured and stored.
  4. created.
Grade 11 Biochemical Pathways
What is true of plants that perform C4 photosynthesis?
  1. C4 photosynthesis inhibits photorespiration in plants living in hot, arid climates.
  2. The stomata are open during the day.
  3. The mesophyll cells store carbon dioxide in a 3-carbon acid.
  4. The Calvin cycle occurs in all the chloroplasts throughout the cells.
Grade 11 Biochemical Pathways
What action is the release of energy from the breakdown of food molecules in the presence of oxygen?
  1. fermentation
  2. digestion
  3. cellular respiration
  4. breathing
Grade 11 Biochemical Pathways
What process includes the reactions that use NADH and FADH2 to produce ATP?
  1. glycolysis
  2. Krebs cycle
  3. oxidative phosphorylation
  4. lactic acid fermentation
  5. chemiosmosis
Grade 11 Biochemical Pathways
What process uses the proton gradient created by the movement of electrons to form ATP?
  1. glycolysis
  2. Krebs cycle
  3. oxidative phosphorylation
  4. lactic acid fermentation
  5. chemiosmosis
Grade 11 Biochemical Pathways
A bacterium survives in a medium that contains nitrate, but no oxygen, with the nitrate reduced to nitrogen gas. This bacterium is likely undergoing
  1. aerobic respiration.
  2. fermentation.
  3. photosynthesis.
  4. photosystems I & II.
  5. anaerobic respiration.
Grade 11 Biochemical Pathways
In chloroplasts, the fluidlike matrix where the Calvin cycle happens is the
  1. stroma.
  2. pyruvate.
  3. mitochondria.
  4. enzyme.
  5. grana.
Grade 11 Biochemistry
What is the pH of pure water?
  1. 3
  2. 7
  3. 12
  4. It is never the same.
Grade 11 Biochemical Pathways
What is the thick fluid found inside of a chloroplast?
  1. thylakoid
  2. stroma
  3. stomata
  4. mesophyll
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