Choose the correct sequence of stages of growth curve for bacteria

Options

A. lag, log, stationary, decline phase
B. lag, log, stationary phase
C. stationary, lag, log, decline phase
D. decline, lag, log phase

Explanation

To solve the question regarding the correct sequence of stages of the growth curve for bacteria, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understand the Growth Curve**: The bacterial growth curve typically consists of four main phases: lag phase, log (exponential) phase, stationary phase, and decline phase.

2. **Identify Each Phase**:
- **Lag Phase**: This is the initial phase where bacteria adapt to their environment. There is little to no cell division during this phase.
- **Log Phase (Exponential Phase)**: After the lag phase, bacteria start to divide at a constant and rapid rate. This phase is characterized by exponential growth.
- **Stationary Phase**: As resources become limited, the growth rate slows down, and the number of new cells created is equal to the number of cells dying. The population stabilizes.
- **Decline Phase**: Eventually, if nutrients are not replenished, the number of viable cells begins to decrease, leading to a decline in the population.

3. **Sequence the Phases**: Based on the definitions of each phase, the correct sequence is:
- Lag Phase → Log Phase (Exponential Phase) → Stationary Phase → Decline Phase

4. **Choose the Correct Option**: From the options provided, identify the one that matches the sequence: Lag Phase, Log Phase, Stationary Phase, Decline Phase. According to the transcript, option number 1 is the correct choice.

### Final Answer:
The correct sequence of stages of the growth curve for bacteria is:
**Lag Phase → Log Phase → Stationary Phase → Decline Phase**.