- The metabolic process that describes the conversion of surplus glucose into glycogen within the liver is called Glycogenesis.
- This process is crucial for storing excess glucose when blood glucose levels are high, such as after a meal. During glycogenesis, glucose molecules are linked together by specific enzymes to form glycogen, which serves as a readily available energy reserve.

- Glycolysis refers to the breakdown of glucose to produce energy in the form of ATP, not its storage.
- Gluconeogenesis is the synthesis of glucose from non-carbohydrate sources, which occurs when glucose availability is low.
- Glycogenolysis is the breakdown of glycogen back into glucose for energy when blood sugar levels fall.

Therefore, glycogenesis is correctly identified as the process that converts excess glucose into glycogen for storage, primarily in the liver and muscle tissues.

Reference: Lehninger Principles of Biochemistry, 7th Edition, Chapter 16: Carbohydrate Metabolism / Page 563