Agriculture notes prepared by IAS Topper for all agriculture based competitive exams-Physiology-Respiration

Respiration

Formation of Glycerol

Basic material: Dyhydroxy Aceton Phosphate

DHAP---Glycerophosphate---Glycerol

Condensation

During this process, COA plays an important role.

Fatty acid + COA---- FA-COA complex

FA-COA complex + Glycerol------------Lipid + COA

 Lipase

Catabolism

Saponification: The reverse process of condensatin, where in the lipid is degraded into fatty acid and glycerol. Then fatty acid and glycerol undergoes oxidation separately

Fatty acid Oxidation: it happens in three different ways

1. Beta-oxidation
2. Alpha-oxidation
3. Peroxidation

Beta-oxidation is the most important process of all these above process. Let us see it to some extent

Mechanism: COA plays important role in the oxidation of fatty acids. Its addition with a lipid molecule and repeated hydration and dehydration results in separation of one acetyl COA at each cycle.

            COA

Lipid---- ----- ----- ----- ----- ----- Acetyl COA

            H2O/-H2O

Glyoxylic acid cycle

Once acetyl COA if formed, the energy is obtained by following steps.

Acetyl COA-------- Succinic acid

Succinic acid-------- Oxaloacetic acid

Ocalo acetic acid-------- Sugar/Sucrose

Sugar/sucrose----------- Energy

These steps clearly show that the process is just a reverse of the Glycolysis and Kreb cycle.