Carbohydrate are stored in mammals as :

Options

A. Lactic acid in muscles
B. Glycogen in liver and muscles
C. Glucose in liver and muscles
D. Glycogen in liver and spleen

Answer

To answer the question "Carbohydrates are stored in mammals as:", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Storage Form of Carbohydrates**:
- In mammals, carbohydrates are primarily stored in the form of polysaccharides.

**Hint**: Think about what type of molecules carbohydrates can form when they are stored in the body.

2. **Name the Specific Polysaccharide**:
- The specific polysaccharide that serves as the storage form of carbohydrates in mammals is glycogen.

**Hint**: Recall the common storage polysaccharide in animals, which is similar to starch in plants.

3. **Understand the Structure of Glycogen**:
- Glycogen is a polymer made up of alpha-D-glucose units. It consists of many glucose molecules linked together.

**Hint**: Consider how glucose molecules can be connected to form larger structures.

4. **Linkage Type**:
- The glucose units in glycogen are connected by glycosidic linkages, specifically 1,4-alpha glycosidic linkages.

**Hint**: Remember the type of bond that connects sugar molecules in polysaccharides.

5. **Location of Storage**:
- Glycogen is primarily stored in the liver and muscle tissues of mammals.

**Hint**: Think about which organs are involved in energy storage and metabolism in the body.

6. **Eliminate Incorrect Options**:
- Other options like lactic acid, glucose, or incorrect locations (like spleen) can be dismissed as they do not represent the correct storage form of carbohydrates.

**Hint**: Analyze each option carefully to determine if it accurately describes carbohydrate storage.

### Final Answer:
Carbohydrates are stored in mammals as glycogen, primarily in the liver and muscles.