What is the correct order of the stages of cellular respiration ?
(a) Krebs' cycle electron- transport- chain glycolysis
(b) Electron transport chain- Krebs' cycle - glycolysis
(c) Glycolysis - Krebs' cycle - electron transport chain 
(d) Glycolysis - electron transport chain - Krebs' cycle

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Cell respiration is carried out by 
(a) ribosome 
(b) mitochondria
(c) chloroplast
(d) Golgi bodies

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The process by which ATP is produced in the inner membrane of a mitochondrion. The electron transport system transfers protons from the inner compartment of the outer; as the protons flow back to the inner compartment, the energy of their movement is used to add phosphate to ADP, forming ATP.
(a) Chemiosmosis
(b) Phosphorylation
(c) Glycolysis
(d) Fermentation

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Assertion   :       Aerobic animals are not truely aerobic.

Reason      :       They produce lactic acid anaerobically.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Concept Questions :-

Aerobic Respiration
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The colour in the brown fat is due is
(a) its larger capacity for generating heat
(b) large number of mitochondria present
(c) a high concentration of iron containing cytochrome pigments
(d) presence of chromatophores

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RQ (Respiratory Quotient) is defined as

(a) Volume of CO2 evolved = Volume of O2 consumed

(b)  Volume of O2 consumedVolume of CO2 evolved

(c) Volume of CO2 evolvedVolume of O2 consumed

(d) Volume of O2 evolvedVolume of CO2 consumed

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Aerobic respiration produces more usable chemical energy than fermentation, because fermentation involves
(a) formation of lactic acid 
(b) complete oxidation of food
(c) partial oxidation of food 
(d) evolution of CO2 and alcohol

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In which of the following reactions of glycolysis, a molecule of water is removed from the substrate?
(a) Glucose  Glucose-6-phosphate
(b) Fructose-6-phosphate  Fructose-1,6 bisphosphate
(c) 2-phosphoglycerate Phosphoenol pyruvate
(d) Phosphoenol pyruvate Pyruvate

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Which one is correct sequence occuring in glycolysis?
(a) G-6-P PEP 3-PGAL 3-PGA
(b) G-6-P 3-PGAL  3-PGA PEP
(c) G-6-P PEP 3-PGA 3-PGAL
(d) G-6-P 3-PGA 3-PGAL PEP

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Which enyme helps in transfer of phosphate group from ATP to carbohydrate?

(1) Phosphate

(2) ATPase

(3) Phosphorylase

(4) Catalase

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