Question

During the mobilization stage of fatty acid metabolism, what happens?

1) Fatty acids are broken down into acetyl-CoA
2) Fatty acids are synthesized from acetyl-CoA
3) Fatty acids are converted into glucose
4) Fatty acids are stored in adipose tissue

Answer 1

During the mobilization stage of fatty acid metabolism, triglycerides are hydrolyzed into fatty acids and glycerol; fatty acids are then transported and converted into acetyl-CoA through beta-oxidation.

Step-by-step explanation:

During the mobilization stage of fatty acid metabolism, triglycerides stored in adipose tissue are broken down, a process known as lipolysis. This releases fatty acids and glycerol into the bloodstream. The fatty acids are then transported to various tissues, including muscle and liver cells, where they are activated and converted into acetyl-CoA through a process called beta-oxidation. This acetyl-CoA can enter the citric acid cycle and be used for energy production, especially when glucose levels are low. Therefore, the correct answer is 1) Fatty acids are broken down into acetyl-CoA.