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At the end of which phase, when cells vi...

At the end of which phase, when cells viewed under the microscope, do not show Golgi complexes, endoplasmic reticulum, nucleolus and nuclear envelope?

A

Telophase

B

Prophase

C

Metaphase

D

Anaphase

Text Solution

AI Generated Solution

The correct Answer is:
To determine at the end of which phase cells do not show Golgi complexes, endoplasmic reticulum, nucleolus, and nuclear envelope, we can analyze each phase of the cell cycle. ### Step-by-Step Solution: 1. **Understanding the Cell Cycle Phases**: The cell cycle consists of several phases: Interphase (which includes G1, S, and G2 phases) and M phase (which includes prophase, metaphase, anaphase, and telophase). 2. **Identifying the M Phase**: The question specifically refers to the M phase, where cell division occurs. During this phase, the cell undergoes mitosis. 3. **Analyzing Prophase**: In prophase, the chromatin condenses into visible chromosomes. The nuclear envelope begins to break down, and the nucleolus disappears. This phase is characterized by the absence of the Golgi apparatus and endoplasmic reticulum as they are also disassembled. 4. **Considering Metaphase**: In metaphase, chromosomes align at the cell's equatorial plane, but the nuclear envelope is still absent, and the nucleolus is not visible. However, the question asks for the end of a phase where these structures are completely absent. 5. **Examining Anaphase**: During anaphase, the sister chromatids are pulled apart towards opposite poles of the cell. The nuclear envelope and nucleolus remain absent. 6. **Looking at Telophase**: In telophase, the nuclear envelope and nucleolus reappear as the cell prepares to divide into two daughter cells. Therefore, this phase cannot be the answer. 7. **Conclusion**: The phase at the end of which cells do not show Golgi complexes, endoplasmic reticulum, nucleolus, and nuclear envelope is **Prophase**. ### Final Answer: **Prophase**
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