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Respiration in Plants

AIPMT 2005MCQEasyNot asked in last 5 yrs+4−1
Ques. 1AIPMT 2005

During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP?

  1. Glycolysis
  2. Krebs' cycle
  3. Conversion of pyruvic acid to acetyl CoA
  4. Electron transport chain

Answer

(4) Electron transport chain

Solution

ATP yield from one glucose molecule (aerobic respiration):

Glycolysis: net 2 ATP (substrate level)

Pyruvic acid → acetyl CoA: no ATP directly (only NADH)

Krebs' cycle: 2 ATP (GTP) directly

Electron transport chain: oxidation of 10 NADH and 2 FADH2 gives about 34 ATP by oxidative phosphorylation

⇒ Total = 2 + 2 + 34 = 38 ATP

∴ The greatest number of ATP molecules is formed in the electron transport chain.

Answer: (4)

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Ques. 2AIPMT 2004

In glycolysis, during oxidation electrons are removed by

  1. ATP
  2. glyceraldehyde-3-phosphate
  3. NAD+
  4. molecular oxygen.
Ques. 3AIPMT 2003

In alcohol fermentation

  1. triose phosphate is the electron donor while acetaldehyde is the electron acceptor
  2. triose phosphate is the electron donor while pyruvic acid is the electron acceptor
  3. there is no electron donor
  4. oxygen is the electron acceptor.
Ques. 4AIPMT 2003

In which one of the following do the two names refer to one and same thing?

  1. Krebs' cycle and Calvin cycle
  2. Tricarboxylic acid cycle and citric acid cycle
  3. Citric acid cycle and Calvin cycle
  4. Tricarboxylic acid cycle and urea cycle
Ques. 5AIPMT 2002

How many ATP molecules are produced by aerobic oxidation of one molecule of glucose?

  1. 2
  2. 4
  3. 38
  4. 34
Ques. 6AIPMT 2001

Cytochrome is

  1. metallo flavo protein
  2. Fe containing porphyrin pigment
  3. glycoprotein
  4. lipid.

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All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
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