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Eleventh Grade (Grade 11) Biochemical Pathways Questions

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Grade 11 Biochemical Pathways
Which chemical equation correctly represents photosynthesis?
  1. [math]H_2O + CO_2 + sunlight rarr O_2 + "glucose"[/math]
  2. [math]H_2O + O_2 + sunlight rarr CO_2 + "glucose"[/math]
  3. [math]O_2 + "glucose" rarr H_2O + CO_2 + "energy"[/math]
  4. [math]CO_2 + "glucose" rarr H_2O + O_2 + "energy"[/math]
Grade 11 Biochemical Pathways
Which molecule serves as the main food source for most known cells?
  1. sucrose
  2. cellulose
  3. PGAL
  4. glucose
Grade 11 Biochemical Pathways
Which kind of cellular respiration happened in the absence of oxygen in some of the earliest forms of life on Earth?
  1. aerobic respiration
  2. anaerobic respiration
  3. deoxygenated respiration
  4. oxygenated respiration
Grade 11 Biochemical Pathways
The decomposition of food into energy that can be used by cells as ATP is
  1. photosynthesis.
  2. cellular respiration.
  3. photolysis.
  4. digestion.
Grade 11 Biochemical Pathways
Chlorophyll is a major component of cellular respiration.
  1. True
  2. False
Grade 11 Biochemical Pathways
Which unit of energy is used by a cell for essential functions?
  1. lipid
  2. ADP
  3. ATP
  4. CoA
Grade 11 Biochemical Pathways
                             produces 32 ATP molecules from one molecule of glucose.
  1. Glycolysis
  2. The electron transport chain
  3. The Krebs cycle
  4. Respiration
Grade 11 Biochemical Pathways
What process relates to the decomposition of food in the absence of oxygen?
  1. cellular respiration
  2. photolysis
  3. fermentation
  4. glycolysis
Grade 11 Biochemical Pathways
Which statement about photosynthesis is false?
  1. Most light reactions happen on the stroma membranes in the chloroplasts.
  2. The Calvin cycle typically happens in the dark.
  3. Light energy is stored in ATP.
  4. A proton gradient helps form ATP from ADP + Pi.
Grade 11 Biochemical Pathways
The initial step of breaking glucose down is
  1. the Krebs cycle.
  2. glycolysis.
  3. fermentation.
  4. electron transport.
Grade 11 Biochemical Pathways
Which molecule is not found in the chemical equation representing photosynthesis?
  1. cardon dioxide
  2. water
  3. chlorophyll
  4. oxygen
Grade 11 Biochemical Pathways
The main catalyst for photosynthesis is
  1. enzymes.
  2. chlorophyll a.
  3. chlorophyll b.
  4. light.
Grade 11 Biochemical Pathways
Which process takes light and changes it into chemical energy that is stored?
  1. cellular respiration
  2. photosynthesis
  3. light-dependent phase reactions
  4. photolysis
Grade 11 Biochemical Pathways
Which molecule is not found in the chemical equation representing cellular respiration?
  1. glucose
  2. oxygen
  3. carbon dioxide
  4. ATP
Grade 11 Biochemical Pathways
The light-independent reactions of photosynthesis happen in the
  1. presence of light only.
  2. presence of darkness only.
  3. presence of either light or darkness.
  4. thylakoid membrane.
Grade 11 Biochemical Pathways
Which process does NOT represent a key stage of cellular respiration?
  1. Krebs cycle
  2. glycolysis
  3. Calvin cycle
  4. electron transport chain
Grade 11 Biochemical Pathways
In the general equation for photosynthesis, which molecule becomes reduced?
  1. water
  2. glucose
  3. carbon dioxide
  4. oxgen
Grade 11 Biochemical Pathways
Which statement about glycolysis is false?
  1. Glycolysis can happen in the absence of oxygen.
  2. Glycolysis happens in the mitochondria.
  3. Glycolysis represents the first step of both anaerobic and aerobic respiration.
  4. Glycolysis of one molecule of glucose generates 2 ATP, 2 NADH, and 2 pyruvates.
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