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Tenth Grade (Grade 10) Biochemistry Questions

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Grade 10 Macromolecules
Large organic molecules are called
  1. polymers.
  2. carbohydrates.
  3. micromolecules.
  4. macromolecules.
Grade 10 Macromolecules
Carbohydrates can be split apart by the chemical process of                            .
  1. hydrolysis
  2. water dehydration synthesis
  3. chemical bonds
  4. none of the above
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 Macromolecules
The parts of a protein that have a specific chemical structure and function are
  1. genes.
  2. chemicals.
  3. domains.
  4. subunits.
  5. enzymes.
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. 6O2+C6H12O6=6CO2+6H2O+energy
  2. 6CO2+C6H12O6+energy=6CO2+6H2O
  3. 6CO2+6H2O=6O2+C6H6O6+energy
  4. 6CO2+6H2O+energy=6O2+C6H12O6
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 Macromolecules
Which best describes carbohydrates?
  1. proteins made up of monomers
  2. macromolecules that serve as building materials
  3. macromolecules that make up cell membranes
  4. organic molecules that are made up of sugar molecules
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 CO2.
  2. extract CO2 from the atmosphere.
  3. synthesize macromolecules from monomers.
  4. extract usable energy from glucose.
Grade 10 Macromolecules
Which macromolecules are the primary energy source for organisms?
  1. nucleic acids
  2. proteins
  3. carbohydrates
  4. lipids
Grade 10 Macromolecules
Structural Formula - Carbon Ring Glucose
The glucose molecule is a monomer for which class of macromolecules?
  1. carbohydrates
  2. lipids
  3. proteins
  4. nucleic acids
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
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