PSLE Science – General Practice Test

The correct choice reflects a commonly studied organism in cell biology due to its simple cellular structure and ease of manipulation in laboratory settings. Amoeba, as a single-celled organism, provides a clear representation of fundamental cellular processes. Researchers can easily observe its cellular mechanisms because its body consists of a single cell that undergoes various functions like movement, feeding, and reproduction, allowing for a straightforward examination of basic biological principles. While yeasts, specifically types like Saccharomyces cerevisiae, are also useful in genetic studies and are widely used in research for their eukaryotic cell structure, the simplicity and versatility of the amoeba make it particularly advantageous for exploring essential concepts in cell biology, such as cell shape, movement, and cellular reactions. E. coli, a type of bacteria, is another important organism in molecular biology and genetics, widely used in studies involving DNA and protein synthesis. However, it is a prokaryotic cell, which presents a different level of complexity compared to the eukaryotic structures of amoeba and yeast. In considering microscopic organisms for fundamental studies in cell biology, amoeba stands out due to its straightforward structure, making it an ideal choice for educational purposes.