From where is fat metabolized in the body?

Fat is primarily stored and metabolized in adipose tissue, which serves as the body’s main reservoir for fat. When the body requires energy and glucose stores are low, adipose tissue breaks down triglycerides into free fatty acids and glycerol through a process known as lipolysis. These free fatty acids are then released into the bloodstream, where they can be taken up by other tissues, including muscles and the liver, for energy production.

Liver tissue does play a role in fat metabolism, particularly in the synthesis of lipoproteins and in the conversion of excess glucose to fat, but the direct storage and most significant breakdown of fat occurs in adipose tissue. Muscle tissue can also utilize fatty acids for energy during prolonged exercise, but it does not store fat in the same way that adipose tissue does. Bone marrow is involved in blood cell production and is not directly involved in fat metabolism.

Therefore, the key role of adipose tissue in storing and metabolizing fat makes it the correct answer.