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AP Intermediate 1st Year Respiration in Plants — practice questions

Explore 40 free Respiration in Plants questions in AP Intermediate 1st Year Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Respiration in Plants questions and exercises with answers

Showing questions 1–30 of 40.

The breakdown of glucose into pyruvic acid in the cytoplasm is calledRead the answer and worked solution →Glycolysis occurs in theRead the answer and worked solution →Per glucose molecule, glycolysis yields a netRead the answer and worked solution →The end product of glycolysis isRead the answer and worked solution →Net ATP yield per glucose from glycolysis alone isRead the answer and worked solution →Alcoholic fermentation produces, besides ethanol,Read the answer and worked solution →The final electron acceptor in aerobic respiration isRead the answer and worked solution →The total ATP yield per glucose by aerobic respiration is approximatelyRead the answer and worked solution →The Krebs cycle takes place in theRead the answer and worked solution →Plants carry out respiration inRead the answer and worked solution →Compared with anaerobic respiration, aerobic respiration yieldsRead the answer and worked solution →The overall reaction of aerobic respiration isRead the answer and worked solution →Glycolysis takes place inRead the answer and worked solution →The net energy yield of glycolysis per glucose isRead the answer and worked solution →In plant cells under low-oxygen conditions, pyruvate is typically converted intoRead the answer and worked solution →The Krebs cycle takes place inRead the answer and worked solution →Per turn of the Krebs cycle, acetyl-CoA combines with which molecule first?Read the answer and worked solution →How many CO₂ molecules are released per glucose by the link reaction plus Krebs cycle?Read the answer and worked solution →In the electron-transport chain of aerobic respiration, the final electron acceptor isRead the answer and worked solution →The textbook total ATP yield per glucose under aerobic conditions is approximatelyRead the answer and worked solution →The respiratory quotient (RQ) of a fat-rich seed during germination is closest toRead the answer and worked solution →NEET · Biology · Glycolysis — Gap FillRead the answer and worked solution →ATP is described as the energy currency of the:Read the answer and worked solution →The breakdown of glucose to pyruvic acid is called:Read the answer and worked solution →Glycolysis occurs in which part of the cell?Read the answer and worked solution →The key product of glycolysis is:Read the answer and worked solution →Fermentation takes place under which conditions?Read the answer and worked solution →The tricarboxylic acid cycle is more commonly called the cycle of:Read the answer and worked solution →Respiration is the breaking of which bonds through oxidation in cells?Read the answer and worked solution →Energy from respiration is released in slow step wise reactions controlled by:Read the answer and worked solution →

Worked practice questions

The breakdown of glucose into pyruvic acid in the cytoplasm is called

  1. Krebs or TCA cycle steps
  2. Electron transport chain
  3. Oxidative phosphorylation
  4. Glycolysis or EMP pathway
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Correct answer: D. Glycolysis or EMP pathway

Glycolysis (Embden-Meyerhof-Parnas pathway) is the cytoplasmic 10-step partial oxidation of glucose into 2 pyruvate. It occurs in all living cells and is the only respiratory pathway in anaerobes.

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Glycolysis occurs in the

  1. Cytoplasm of the cell
  2. Matrix of the mitochondrion
  3. Inner mitochondrial membrane
  4. Stroma of the chloroplast
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Correct answer: A. Cytoplasm of the cell

Glycolysis is cytoplasmic. The pyruvate it produces is transported into the mitochondrial matrix for further oxidation. ETS and oxidative phosphorylation occur on the inner mitochondrial membrane.

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Per glucose molecule, glycolysis yields a net

  1. 1 ATP and 1 NADH molecule
  2. 0 ATP and 8 NADH molecules
  3. 2 ATP and 2 NADH molecules
  4. 4 ATP and 4 NADH molecules
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Correct answer: C. 2 ATP and 2 NADH molecules

Glycolysis uses 2 ATP (priming) and produces 4 ATP (substrate-level phosphorylation), so NET 2 ATP. It also yields 2 NADH (from the PGAL to BPGA step) per glucose.

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More Biology topics

The Living World & Biological ClassificationPhotosynthesis in Higher PlantsAnimal KingdomBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionLocomotion and MovementNeural Control and Chemical Coordination