The term Endoplasmic reticulum was given by

Options

A. Kolliker
B. Schimper
C. Altman
D. Porter

Answer

**Step-by-Step Solution:**

1. **Understanding the Term**: The term "Endoplasmic Reticulum" refers to a complex network of membranes within the cell that plays a crucial role in the synthesis and transport of proteins and lipids.

2. **Identifying the Structure**: The endoplasmic reticulum (ER) is the largest internal membrane of the cell. It consists of a double-layered membrane and includes structures such as cisternae, vesicles, and tubules.

3. **Types of Endoplasmic Reticulum**: The endoplasmic reticulum is classified into two types:
- **Rough Endoplasmic Reticulum (RER)**: Characterized by the presence of ribosomes on its surface, which gives it a "rough" appearance. It is primarily involved in protein synthesis.
- **Smooth Endoplasmic Reticulum (SER)**: Lacks ribosomes and is involved in lipid synthesis and detoxification processes.

4. **Historical Context**: The term "Endoplasmic Reticulum" was introduced to describe this cellular structure.

5. **Attribution of the Term**: The term "Endoplasmic Reticulum" was coined by K.R. Porter in the year 1948.

6. **Final Answer**: Therefore, the answer to the question "The term Endoplasmic reticulum was given by" is K.R. Porter.

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