The bacteria that grow best in oxygen but can survive without oxygen also are called

Options

A. facultative aerobes
B. obligate aerobes
C. facultative anaerobes
D. obligate anaerobes

Answer

To solve the question regarding the type of bacteria that grow best in oxygen but can survive without it, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Bacteria**:
- We have different classifications of bacteria based on their oxygen requirements:
- **Facultative Aerobes**: These bacteria can grow in the presence of oxygen but do not require it for survival.
- **Obligate Aerobes**: These bacteria require oxygen to survive and cannot live without it.
- **Facultative Anaerobes**: These bacteria prefer to grow in the presence of oxygen but can survive without it.
- **Obligate Anaerobes**: These bacteria cannot tolerate oxygen and will die in its presence.

2. **Analyze the Question**:
- The question specifically asks for bacteria that grow best in oxygen but can also survive without it.

3. **Evaluate Each Option**:
- **Option A: Facultative Aerobes** - These do not need oxygen but can grow in its presence.
- **Option B: Obligate Aerobes** - These require oxygen and cannot survive without it.
- **Option C: Facultative Anaerobes** - These prefer oxygen for growth but can survive without it.
- **Option D: Obligate Anaerobes** - These cannot survive in the presence of oxygen.

4. **Select the Correct Answer**:
- The correct classification for bacteria that grow best in oxygen but can survive without it is **Facultative Anaerobes** (Option C).

### Final Answer:
The bacteria that grow best in oxygen but can survive without oxygen are called **Facultative Anaerobes** (Option C).

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