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Tenth Grade (Grade 10) Biochemical Pathways Questions

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Grade 10 Biochemical Pathways
What is the role of NADP+ in photosynthesis?
  1. It helps produce ATP from the light reactions.
  2. It is the primary electron acceptor.
  3. It forms NADPH to be used in the Calvin cycle.
  4. It forms part of photosystem II.
Grade 10 Biochemical Pathways
Which is a product of the Krebs cycle?
  1. ATP
  2. NADH
  3. FADH2
  4. all of the above
Grade 10 Biochemical Pathways
Which is a description of NAD+?
  1. product of the citric acid cycle
  2. electron carrier in photosynthesis
  3. electron carrier in cellular respiration
  4. also called photosystem II
  5. also called photosystem I
Grade 10 Biochemical Pathways
Both plants and animals use                          and give off                          during respiration.
  1. nitrogen; oxygen
  2. nitrogen; carbon dioxide
  3. oxygen; carbon dioxide
  4. oxygen; nitrogen
Grade 10 Biochemical Pathways
What is the purpose of ATP?
  1. provide chemical energy to the cells
  2. complete the photosynthesis process
  3. process carbon dioxide
Grade 10 Biochemical Pathways
Which is a description of NADPH?
  1. product of the citric acid cycle
  2. electron carrier in photosynthesis
  3. electron carrier in cellular respiration
  4. also called photosystem II
  5. also called photosystem I
Grade 10 Biochemical Pathways
What are the two parts of photosynthesis?
  1. light dependent and light independent
  2. chloroplasts and photosystems
  3. thylakoids and stroma
  4. ATP synthase and electron transport chain
Grade 10 Biochemical Pathways
Most of the world's photosynthesis occurs
  1. on land.
  2. in the air.
  3. in the oceans.
  4. in lakes.
Grade 10 Biochemical Pathways
Which process in eukaryotic cells will proceed normally whether oxygen (O2) is present or absent?
  1. electron transport
  2. glycolysis
  3. citric acid cycle
  4. oxidative phosphorylation
  5. chemiosmosis
Grade 10 Biochemical Pathways
Which statement correctly describes the relationship between the light reactions and the Calvin cycle?
  1. The light reactions produce ADP and NADP+, both of which are used in the Calvin cycle.
  2. The light reactions produce water, ATP, and NADPH, all of which are used in the Calvin cycle.
  3. The light reactions produce carbon dioxide and water, both of which are used in the Calvin cycle.
  4. The light reactions produce ATP and NADPH, both of which are used in the Calvin cycle.
Grade 10 Biochemical Pathways
The green pigment in a plant is
  1. chlorophyll.
  2. chlorine.
  3. mitochondria.
  4. mesophyll.
Grade 10 Biochemical Pathways
Which enzyme is important for carbon fixation during photosynthesis?
  1. RuBP
  2. hydrogen ions
  3. RuBisCO
  4. G3P
Grade 10 Biochemical Pathways
During glycolysis, pyruvic acid is produced by breaking down
  1. glucose.
  2. ATP.
  3. chlorophyll.
  4. water.
  5. NADH.
Grade 10 Biochemical Pathways
Carbon dioxide (CO2) is released during which stages of cellular respiration?
  1. glycolysis and the oxidation of pyruvate to acetyl CoA
  2. oxidation of pyruvate to acetyl CoA and the citric acid cycle
  3. citric acid cycle and oxidative phosphorylation
  4. oxidative phosphorylation and fermentation
Grade 10 Biochemical Pathways
What pigment is present in leaves to trap sunlight?
  1. chloroplast
  2. stomata
  3. xanthophyll
  4. chlorophyll
Grade 10 Biochemical Pathways
Which series is the correct sequence of stages in cellular respiration?
  1. citric acid cycle, electron transport, glycolysis
  2. citric acid cycle, glycolysis, electron transport
  3. glycolysis, citric acid cycle, electron transport
  4. electron transport, citric acid cycle, glycolysis
  5. electron transport, glycolysis, citric acid cycle
Grade 10 Biochemical Pathways
The waste products of cellular respiration include
  1. water and glucose.
  2. water only.
  3. carbon dioxide only.
  4. glucose only.
  5. water and carbon dioxide.
Grade 10 Biochemical Pathways
During the process of photosynthesis, energy from the Sun is converted into
  1. chemical energy in the bonds of inorganic molecules.
  2. chemical energy in the bonds of organic molecules.
  3. enzymes used to produce inorganic molecules.
  4. enzymes used to produce organic molecules.
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