Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

How energy is produced from food. Explain step-by-step.

 

Asked by Trisha Gupta | 25 Jun, 2021, 06:59: PM
Expert Answer

The proteins, lipids, and polysaccharides that make up most of the food we eat must be broken down into smaller molecules before our cells can use them—either as a source of energy or as building blocks for other molecules.

Stage 1 in the enzymatic breakdown of food molecules is therefore digestion, which occurs either in our intestine outside cells, or in a specialized organelle within cells, the lysosome. In either case, the large polymeric molecules in food are broken down during digestion into their monomer subunits—proteins into amino acids, polysaccharides into sugars, and fats into fatty acids and glycerol—through the action of enzymes. After digestion, the small organic molecules derived from food enter the cytosol of the cell, where their gradual oxidation begins. Oxidation occurs in two further stages of cellular catabolism: stage 2 (glycolysis) starts in the cytosol and ends in the major energy-converting organelle, the mitochondrion; stage 3 (Krebs cycle) is entirely confined to the mitochondrion.

Answered by Sheetal Kolte | 28 Jun, 2021, 11:37: AM
CBSE 10 - Biology
Asked by tanyajain164 | 10 Nov, 2021, 09:07: PM
ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by gsonal11 | 20 Sep, 2021, 05:27: PM
ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by pk8828194 | 14 Aug, 2021, 07:39: AM
ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by umakantkadampatil39 | 10 Aug, 2021, 12:16: AM
ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by parameshreddyhp | 31 Jul, 2021, 01:47: PM
ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by shivayogichirde | 06 Jul, 2021, 08:53: PM
ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by Trisha Gupta | 25 Jun, 2021, 06:59: PM
ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by 9927 | 07 Jun, 2021, 06:42: PM
ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by rooba.rama | 31 May, 2021, 08:21: PM
ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by resabenjamin | 15 Jan, 2021, 08:00: PM
ANSWERED BY EXPERT

Start your hassle free Education Franchisee and grow your business!

Know more
×