Quick Answer: How Many Rounds Of Beta Oxidation Occur For Stearic Acid?

How many cycles of β oxidation are needed?

seven cyclesIn order to completely break down the fatty acid, a total of seven cycles of beta oxidation must take place.

This generates a total of 8 acetyl-CoA molecules, 7 NADH molecules and 7 FADH2 molecules..

How many ATP molecules can be generated from the β oxidation of stearic acid?

2 ATP’sThe activation of stearic acid by coenzyme A to form stearoyl CoA comes from the hydrolysis of 2 ATP’s (total=-2 ATP’s). As a stearoyl CoA molecule (18 C’s) passes through the β-oxidation spiral, 9 acetyl CoA’s, 8 FADH2’s, and 8 NADH’s are produced. – Each FADH2 yields 1.5 ATP’s (total=8×1.

How many molecules of acetyl CoA are produced from the complete oxidation of stearic acid?

nine moleculesFor example, mitochondrial oxidation of each molecule of the 18-carbon stearic acid, CH3(CH2)16COOH, yields nine molecules of acetyl CoA and eight molecules each of NADH and FADH2.

What are the repeated steps of β oxidation?

Beta oxidation takes place in four steps: dehydrogenation, hydration, oxidation and thyolisis. Each step is catalyzed by a distinct enzyme. Briefly, each cycle of this process begins with an acyl-CoA chain and ends with one acetyl-CoA, one FADH2, one NADH and water, and the acyl-CoA chain becomes two carbons shorter.

How many cycles of β oxidation are needed for the complete oxidation of stearic acid?

Because in last step when only four carbons are present only one cycle is required to produce two acetyl CoA molecules Stearic acid contains 18 carbon atoms in its molecules. Thus, number of beta-oxidation cycle required will be eight (8).

How many acetyl CoA does beta oxidation have?

Some naturally occurring fatty acids contain an odd number of carbon atoms. These fatty acids are also oxidised by β-oxidation through removing two carbons as acetyl-CoA in each round of the oxidative process.

How is beta oxidation activated?

Activation. Once the triglycerides are broken down into glycerol and fatty acids they must be activated before they can enter into the mitochondria and proceed on with beta-oxidation. … Once inside the mitochondria the fatty acyl-CoA can enter into beta-oxidation.

How many ATP does a 16 carbon fatty acid make?

129 ATPComplete oxidation of one palmitate molecule (fatty acid containing 16 carbons) generates 129 ATP molecules.