New cells generate from

Options

A. bacterial fermentation
B. regeneration of old cells
C. pre-existing cells
D. abiotic materials

Answer

To answer the question "Where do new cells generate from?", we can follow these steps:

### Step 1: Understand the Cell Theory
The cell theory is a fundamental concept in biology that outlines the properties of cells. It consists of three main postulates:
1. All living organisms are composed of cells.
2. The cell is the basic unit of life, which means that all functions of life occur within cells.
3. New cells arise from pre-existing cells.

### Step 2: Analyze the Options Given
The question provides four options:
1. Bacterial fermentation
2. Regeneration of cold cells
3. Pre-existing cells
4. Abiotic materials

### Step 3: Evaluate Each Option
- **Bacterial fermentation**: This is a metabolic process, not a source of new cells.
- **Regeneration of cold cells**: This option is vague and does not directly relate to the generation of new cells.
- **Pre-existing cells**: According to the third postulate of cell theory, new cells are formed from existing cells.
- **Abiotic materials**: Cells cannot arise from non-living materials; they require existing cells for reproduction.

### Step 4: Conclusion
Based on the analysis, the correct answer is that new cells generate from **pre-existing cells**.

### Final Answer:
New cells generate from pre-existing cells.

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