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Tenth Grade (Grade 10) Biochemistry Questions

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Grade 10 Macromolecules
                are the proteins that speed up a chemical reaction.
  1. Minerals
  2. Vitamins
  3. Antibodies
  4. Enzymes
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 Macromolecules
Living things use carbohydrates as their main source of                  .
  1. energy
  2. DNA
  3. protection
  4. none of the above
Grade 10 Macromolecules
Proteins are made of
  1. fatty acids.
  2. nucleotides.
  3. amino acids.
  4. sugars.
Grade 10 Biochemical Pathways
The formula ENERGY+6CO2+6H2O→C6H12O6+6O2 gives the overall products and reactants for
  1. photosynthesis.
  2. cellular respiration.
  3. cellular transport.
  4. the Krebs cycle.
  5. the Calvin cycle.
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
Grade 10 Macromolecules
Which macromolecule functions in quick energy for an organism?
  1. protein
  2. nucleic acid
  3. lipid
  4. carbohydrate
Grade 10 Biochemical Pathways
This word describes a form of cellular respiration that does NOT need oxygen.
  1. aerobic
  2. anaerobic
  3. equilibrium
  4. pigment
  5. substrate
Grade 10 Biochemical Pathways
All these factors 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 fuel usage.
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 Biochemical Pathways
During cellular respiration, organisms produce
  1. oxygen.
  2. nitrogen.
  3. carbon dioxide.
  4. carbon.
Grade 10 Macromolecules
Which macromolecule is not responsible for storing energy? Select all that apply.
  1. carbohydrates
  2. lipids
  3. proteins
  4. nucleic acids
Grade 10 Macromolecules
Which statement describes a catalyst?
  1. It speeds up a chemical reaction.
  2. It slows down a chemical reaction.
  3. It causes an inhibition.
Grade 10 Biochemical Pathways
The two halves of photosynthesis are
  1. light dependent and light independent.
  2. productive and nonproductive.
  3. carbon dependent and carbon independent.
Grade 10 Biochemical Pathways
What are the stages of cellular respiration?
  1. glycolysis
  2. Krebs cycle
  3. electron transport
  4. all of the above
Grade 10 Macromolecules
What molecules play many key roles in the building of proteins and can act as enzymes?
  1. phospholipids
  2. ribonucleic acid (RNA)
  3. deoxyribonucleic acid (DNA)
  4. waxes
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