What effect is expected when both cell A and cell B have gain-of-function mutations in their respective signaling pathways for glycogen breakdown?

What effect is expected when both cell A and cell B have gain-of-function mutations in their respective signaling pathways for glycogen breakdown?

• A. Both will undergo decreased glycogen breakdown
• B. Both will undergo increased glycogen breakdown
• C. Only cell A will undergo increased glycogen breakdown
• D. Only cell B will undergo increased glycogen breakdown

Answer: (B)

When both cell A and cell B exhibit gain-of-function mutations in their signaling pathways related to glycogen breakdown, it signifies that these mutations enhance the activity of the pathways responsible for the process of glycogenolysis. Gain-of-function mutations typically result in the production of proteins that are more active than their normal counterparts or may lead to increased signaling efficiency. In this context, glycogen breakdown refers to the enzymatic process that converts glycogen into glucose, making it available for energy. With gain-of-function mutations, both cells would likely have pathways that promote this conversion more effectively, leading to an overall increase in glycogen breakdown. Therefore, since both cells are expected to promote this metabolic pathway more vigorously due to their respective mutations, it is reasonable to conclude that both cell A and cell B will undergo increased glycogen breakdown. This increased activity in both pathways supports the outcome where both cells are more efficient at mobilizing energy from glycogen stores, which is represented by the correct answer.

When both cell A and cell B exhibit gain-of-function mutations in their signaling pathways related to glycogen breakdown, it signifies that these mutations enhance the activity of the pathways responsible for the process of glycogenolysis. Gain-of-function mutations typically result in the production of proteins that are more active than their normal counterparts or may lead to increased signaling efficiency.

In this context, glycogen breakdown refers to the enzymatic process that converts glycogen into glucose, making it available for energy. With gain-of-function mutations, both cells would likely have pathways that promote this conversion more effectively, leading to an overall increase in glycogen breakdown.

Therefore, since both cells are expected to promote this metabolic pathway more vigorously due to their respective mutations, it is reasonable to conclude that both cell A and cell B will undergo increased glycogen breakdown. This increased activity in both pathways supports the outcome where both cells are more efficient at mobilizing energy from glycogen stores, which is represented by the correct answer.