NEET Practice Questions (MCQs) with Answers & Solutions

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Which one is correct sequence occuring in glycolysis?

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Explanation

(b) The correct sequence of glycolysis is as following

Glucose-6-Phosphate 3-Phosphoglyceraldehyde 3-Phosphoglyceric acid  Phosphoenol
pyruvate Pyruvic acid

In which of the following reactions of glycolysis, a molecule of water is removed from the substrate?

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Explanation

(C) In glycolysis, water molecule is removed during conversion of 2-phosphoglycerate to phosphoenol pyruvate.

Aerobic respiration produces more usable chemical energy than fermentation, because fermentation involves

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Explanation

During aerobic respiration, complete oxidation of food takes place. Thus, during it a glucose molecule produces 36 ATP while during fermentation the food oxidises partially and instead of CO2 + H2O, formation of ethyl alcohol takes place with production of 2 ATP per glucose molecule.

RQ (Respiratory Quotient) is defined as

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Explanation

(c) The ratio of CO2 formed and O2 utilised during complete combustion of fuel substances is called respiratory quotient. RQ can be measured by Ganong's respirometer.

           RQ = Volume of CO2 evolvedVolume of O2 consumed

The colour in the brown fat is due is

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Explanation

(c) Brown colour is due to iron containing cytochrome pigment in fat. The adipose cells of brown fat are multilocular, each cell with several small fat globules. It is loaded with a large number of mitochondria.

Found in hibernating mammals such as rats other rodents, etc.

What is the correct order of the stages of cellular respiration ?

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Explanation

The correct order of stages of cellular respiration are 
GlycolysisKrebs' cycleElectron trasnsport system

Cell respiration is carried out by 

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Explanation

Cell respiration is carried out by mitochondria. Krebs' cycle take place in mitochondrial matrix and electron transport chain occurs in the inner mitochondrial membrane.

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.

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Explanation

(a) Chemiosmosis is the diffusion of ions across a selectively-permeable membrane. More specifically, it relates to the generation of ATP by the movement of hydrogen ions across a membrane during cellular respiration.

ATP synthase is the enzyme that makes ATP by chemiosmosis. The generation of ATP by chemiosmosis occurs in chloroplasts and mitochondria as well as in some bacteria.

Which of the following is not true?

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Explanation

Page number-226

Introduction

Respiration In Plants

The following statements are true except

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Explanation

Page number-227

Introduction

Respiration In Plants

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