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Tenth Grade (Grade 10) Biochemistry Questions

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Grade 10 Macromolecules
What are carbohydrates?
  1. Proteins made up of monomers
  2. Serve as building materials
  3. Make up cell membranes
  4. Organic molecules that are made up of sugar molecules
Grade 10 Macromolecules
What describes molecules that play many key roles in building of proteins and can act as enzymes?
  1. Phospholipids
  2. Ribonucleic Acid (RNA)
  3. Deoxyribonucleic Acid (DNA)
  4. Waxes
Grade 10 Macromolecules
Grade 10 Biochemical Pathways
Grade 10 Biochemical Pathways
What best describes how fermentation allows cells to produce ATP in anaerobic environments?
  1. Citric acid transforms acetyl CoA into lactic acid or ethanol
  2. ATP is produced by splitting up pyruvic acid molecules
  3. Pyruvic acid accepts the energetic electron from NADH, oxidizing it to NAD+ and allowing glycolysis to start over
  4. Carbon fixation occurs which changes RuBP into ATP and splits water molecules
  5. Oxygen accepts the final electron in the hydrogen ion pump, producing ATP with ATP Synthase
Grade 10 Biochemical Pathways
Which of the following 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
All of the following are examples of how carbon moves through the carbon cycle EXCEPT
  1. biological processes like photosynthesis and respiration
  2. biological processes like evaporation and transpiration
  3. geochemical processes like erosion and volcanic activity
  4. human activities like mining, deforestation, and fossil fuels
Grade 10 Macromolecules
Grade 10 Macromolecules
Enzymes in your body act as catalysts. Thus, the role of enzymes is to
  1. help you breathe.
  2. increase the rate of chemical reactions.
  3. inhibit chemical reactions.
  4. decrease the rate of chemical reactions.
Grade 10 Macromolecules
Large organic molecules are called                .
  1. Polymers
  2. Carbohydrates
  3. Micromolecules
  4. Macromolecules
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 Macromolecules
Grade 10 Macromolecules
What do fats do?
  1. Store energy
  2. Speed up the chemical reaction
  3. Insulate your body
  4. Both A and C
Grade 10 Biochemical Pathways
What are the reactants of cellular respiration?
  1. Glucose and oxygen
  2. Oxygen and carbon dioxide
  3. Water and oxygen
  4. Glucose and carbon dioxide
Grade 10 Macromolecules
What type of macromolecules are the enzymes found in our bodies?
  1. lipids
  2. carbohydrates
  3. proteins
  4. nucleic acids
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