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Respiration in Plants · Question 23

NEET 2016 (Phase 2)MCQEasy📈 Topic in 12% papers+4−1
1

Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?

  1. Glucose-6-phosphate
  2. Fructose 1, 6-bisphosphate
  3. Pyruvic acid
  4. Acetyl CoA

Answer

(4) Acetyl CoA

Solution

As per NCERT, fatty acids are broken down to acetyl CoA before entering the respiratory pathway, glycerol enters as PGAL, and proteins are broken down to amino acids which enter at pyruvic acid, acetyl CoA or within the Krebs' cycle.

⇒ Glucose enters glycolysis and pyruvic acid is converted to acetyl CoA before the TCA cycle.

∴ Acetyl CoA is the common intermediate in the breakdown of fats, carbohydrates and proteins.

Answer: (4)

NEET 2016 (Phase 2)

Keep practising — Respiration in Plants

2

Oxidative phosphorylation is

  1. formation of ATP by transfer of phosphate group from a substrate to ADP
  2. oxidation of phosphate group in ATP
  3. addition of phosphate group to ATP
  4. formation of ATP by energy released from electrons removed during substrate oxidation.
NEET 2016 (Phase 2)
3

Cytochromes are found in

  1. cristae of mitochondria
  2. lysosomes
  3. matrix of mitochondria
  4. outer wall of mitochondria.
AIPMT 2015 (Cancelled)
4

In which one of the following processes CO2 is not released?

  1. Aerobic respiration in plants
  2. Aerobic respiration in animals
  3. Alcoholic fermentation
  4. Lactic fermentation
AIPMT 2014
5

Which of the metabolites is common to respiration-mediated breakdown of fats, carbohydrates and proteins?

  1. Pyruvic acid
  2. Acetyl CoA
  3. Glucose-6-phosphate
  4. Fructose-1,6-bisphosphate
NEET 2013
6

The three boxes in this diagram represent the three major biochemical pathways in aerobic respiration. Arrows represent net reactants or products. [figure] Arrows numbered 4, 8 and 12 can all be

  1. H2O
  2. FAD or FADH2
  3. NADH
  4. ATP.
NEET 2013
7

In mitochondria, protons accumulate in the

  1. outer membrane
  2. inner membrane
  3. intermembrane space
  4. matrix
AIPMT 2011 (Mains)
8

The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called

  1. glycolysis
  2. fermentation
  3. aerobic respiration
  4. photorespiration
AIPMT 2010 (Prelims)
9

Aerobic respiratory pathway is appropriately termed

  1. parabolic
  2. amphibolic
  3. anabolic
  4. catabolic.
AIPMT 2009
10

The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called

  1. glycolysis
  2. fermentation
  3. aerobic respiration
  4. photorespiration
AIPMT 2008
11

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because

  1. a proton gradient forms across the inner membrane
  2. there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)
  3. high energy bonds are formed in mitochondrial proteins
  4. ADP is pumped out of the matrix into the intermembrane space
AIPMT 2008

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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
Other chaptersBiomolecules (Biology)