Which organelle is involved in the metabolism of carbohydrates?

The smooth endoplasmic reticulum (SER) plays a crucial role in the metabolism of carbohydrates. It is involved in the synthesis of lipids and carbohydrates and is also key in the detoxification processes. In particular, the SER is responsible for the storage and release of calcium ions and the metabolism of certain carbohydrates, such as glucose. It contributes to the conversion of glucose-6-phosphate into glucose, a vital step in glucose metabolism that is particularly important during times of low blood sugar.

Additionally, the SER can also synthesize enzymes that facilitate these metabolic pathways. While other organelles may contribute to energy production or cellular functions, the SER specifically engages in critical pathways directly related to carbohydrate metabolism, making it essential for maintaining glucose homeostasis and energy balance in the cell.