Question

When examining an animal cell, what part controls the activity of the cell and can be thought of as the cell brain point) endoplasmic reticulum cytoplasm

Answer 1

In an animal cell, the part that controls the activities of the cell and is often referred to as the "cell brain" is the **nucleus**. The nucleus contains the cell's genetic material (DNA) and regulates gene expression, thereby controlling various cellular functions and activities.

The other options you mentioned:
- **Endoplasmic reticulum**: This organelle is involved in protein and lipid synthesis but does not control cell activity.
- **Cytoplasm**: This is the gel-like substance within the cell that contains the organelles but does not have a controlling function.

So, in summary, the nucleus is the structure that acts as the "brain" of the cell.