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Tenth Grade (Grade 10) Biochemical Pathways Questions

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Grade 10 Biochemical Pathways
Most common primary producers use solar energy through the process of
  1. chemosynthesis.
  2. photosynthesis.
  3. glycolysis.
  4. respiration.
Grade 10 Biochemical Pathways
What are the products of photosynthesis?
  1. glucose and water
  2. glucose and oxygen
  3. water and oxygen
  4. carbon dioxide
Grade 10 Biochemical Pathways
Most common primary producers use solar energy in the process of
  1. chemosynthesis.
  2. photosynthesis.
  3. glycolysis.
  4. respiration.
Grade 10 Biochemical Pathways
What statement 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 repeat.
  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
The two main types of fermentation are
  1. alcoholic and yeast.
  2. alcoholic and lactic.
  3. yeast and glycolysis.
  4. lactic and yeast.
Grade 10 Biochemical Pathways
Chlorophyll molecules are in which part of the chloroplast?
  1. stroma
  2. thylakoid membranes
  3. stomata
  4. plasma membrane
Grade 10 Biochemical Pathways
What is the role of cellular respiration in organisms?
  1. to use the energy in glucose to turn ADP into ATP so it can be used to fuel chemical reactions
  2. to use the energy in ATP to fuel chemical reactions that create glucose
  3. to use the energy in the sun to turn ATP into ADP
  4. to produce chlorophyll by breaking ADP into ATP
Grade 10 Biochemical Pathways
What is NOT true about energy transformation in living things?
  1. Energy from respiration is recycled by plants to carry out photosynthesis.
  2. Light energy is converted to chemical energy by plants during photosynthesis.
  3. Chemical energy is transformed to heat energy as organisms carry out respiration.
  4. Energy is stored by plants in bonds of organic compounds used as food.
Grade 10 Biochemical Pathways
The Krebs cycle begins when                            enters the                           .
  1. pyruvic acid; chloroplast
  2. pyruvic acid; mitochondria
  3. NAD+; mitochondria
  4. NAD+; chloroplast
Grade 10 Biochemical Pathways
Which compounds are produced during cellular respiration?
  1. oxygen and glucose
  2. carbon dioxide, water, and ATP
  3. oxygen
  4. carbon dioxide and ATP
  5. ATP and water
Grade 10 Biochemical Pathways
Which is a description of glycolysis?
  1. aerobic production of ATP from glucose
  2. inhibition of the enzyme that produces prostaglandins
  3. oxidation of glucose to produce two pyruvate molecules
  4. exchange of gases by the lungs
  5. blocking of active site of enzymes in bacteria that make cell walls
Grade 10 Biochemical Pathways
Products of photosynthesis include
  1. carbon dioxide.
  2. oxygen.
  3. energy.
  4. water.
Grade 10 Biochemical Pathways
Which equation best summarizes photosynthesis?
  1. 6O2+6H2O→C6H12O6+6CO2
  2. 6CO2+6H2O→C6H12O6+6O2
  3. 6CO2+6H2O+6O2→C6H12O6
  4. 6CO2+6O2→C6H12O6+6H2O
  5. C6H12O6+6O2→6CO2+6H2O
Grade 10 Biochemical Pathways
What statement best describes carbon fixation during the Calvin cycle?
  1. Glucose is broken down into pyruvate and ATP.
  2. Electrons are passed along the thylakoid membrane.
  3. NADH is produced from NAD+.
  4. Water is split and oxygen is released.
  5. Carbon dioxide gas is attached to sugars.
Grade 10 Biochemical Pathways
What is the overall purpose of cellular respiration?
  1. to break down sugars to produce ATP for cell activities
  2. to give our cells oxygen
  3. to break down food in animal cells
  4. to produce NADH and FADH2
Grade 10 Biochemical Pathways
Where does lactic acid fermentation take place?
  1. muscle
  2. bone
  3. brain
  4. stomach
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