Which of the following is high energy phosphate bond (produce ATP on hydrolysis)a) F-6-phosphateb) Creatine phosphatec) Carbamoyl phosphated) Glucose-1 -phosphatee) Glucose-6-phosphate

**Core Concept**
High-energy phosphate bonds are chemical bonds that store energy in the form of phosphate groups. These bonds are often found in molecules that can donate energy to drive cellular reactions, such as the production of ATP (adenosine triphosphate). High-energy phosphate bonds are characterized by a high energy of hydrolysis, meaning that they release a significant amount of energy when broken down.

**Why the Correct Answer is Right**
Creatine phosphate is a molecule that stores energy in the form of a high-energy phosphate bond. When creatine phosphate is hydrolyzed, it releases energy that can be used to drive the production of ATP. This process is particularly important in muscle cells, where creatine phosphate serves as a rapid source of energy to fuel muscle contractions. The energy released from creatine phosphate hydrolysis is sufficient to drive the phosphorylation of ADP to form ATP, making it a crucial component of cellular energy metabolism.

**Why Each Wrong Option is Incorrect**
**Option A:** F-6-phosphate is a product of glycolysis, but it does not contain a high-energy phosphate bond. It is formed from glucose-6-phosphate through the action of phosphoglucose isomerase.
**Option C:** Carbamoyl phosphate is a high-energy compound involved in the urea cycle, but it is not typically associated with the production of ATP through hydrolysis.
**Option D:** Glucose-1-phosphate is a compound involved in glycogenolysis and gluconeogenesis, but it does not contain a high-energy phosphate bond.
**Option E:** Glucose-6-phosphate is a key intermediate in glycolysis, but it does not contain a high-energy phosphate bond.

**Clinical Pearl / High-Yield Fact**
The energy stored in high-energy phosphate bonds is a critical component of cellular metabolism. In muscle cells, creatine phosphate serves as a rapid source of energy to fuel muscle contractions, making it an essential component of athletic performance and exercise physiology.

**Correct Answer:** B. Creatine phosphate