A phospholipid molecule has a polar group which is

Options

A. water repellent
B. long chain of fatty acids
C. hydrophilic
D. hydrophobic

Answer

To answer the question "A phospholipid molecule has a polar group which is...", we need to analyze the structure and properties of phospholipids.

### Step-by-Step Solution:

1. **Understanding Phospholipids**:
- Phospholipids are molecules that consist of two fatty acids, a glycerol backbone, and a phosphate group.

2. **Identifying the Components**:
- The phosphate group is the polar part of the phospholipid. It is attached to the glycerol backbone.

3. **Defining Polar Groups**:
- A polar group is one that has a partial positive charge and a partial negative charge, allowing it to interact with water molecules.

4. **Hydrophilic vs. Hydrophobic**:
- Hydrophilic means "water-loving," which refers to substances that can interact with water due to their polar nature.
- Hydrophobic means "water-repelling," which refers to substances that do not interact well with water, typically non-polar substances like fatty acids.

5. **Analyzing the Options**:
- The options provided include:
- Water repellent
- Long chain of fatty acid
- Hydrophilic
- Hydrophobic

6. **Selecting the Correct Answer**:
- Since the phosphate group is polar and attracts water, it is classified as hydrophilic. Therefore, the correct answer is that the polar group in a phospholipid molecule is hydrophilic.

### Final Answer:
A phospholipid molecule has a polar group which is **hydrophilic**.

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