The number of 'ends' in a glycogen molecule would be

Options

A. equal to the number of branches plus one
B. equal to the number of branch points
C. one
D. two, one on the left side and another on the right side.

Explanation

To determine the number of 'ends' in a glycogen molecule, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Glycogen Structure**: Glycogen is a polysaccharide that serves as a form of energy storage in animals. It is a branched molecule, meaning it consists of a central chain with multiple branches extending from it.

2. **Identify the Main Chain and Branches**: In a glycogen molecule, there is one main chain and several branches. Each branch can be considered as a separate chain.

3. **Count the Ends**: Each chain (including the main chain and the branches) has two ends. However, since the branches are connected to the main chain, we need to consider how many distinct ends there are:
- The main chain contributes one end.
- Each branch contributes one additional end.

4. **Total Ends Calculation**: The total number of ends in a glycogen molecule can be calculated using the formula:
\[ \text{Total Ends} = \text{Number of Branches} + 1 \]
Here, the "+1" accounts for the end of the main chain.

5. **Conclusion**: Therefore, the number of ends in a glycogen molecule is equal to the number of branches plus one (for the main chain).

### Final Answer:
The number of 'ends' in a glycogen molecule would be equal to the number of branches plus one.