Answer:

1. )Cell Membrane - The cell membrane is a biological membrane that separates the interior of all cells from the outside environment which protects the cell from its environment

2.) Nucleus - The nucleus is a membrane-bound organelle that contains genetic material (DNA) of eukaryotic organisms. As such, it serves to maintain the integrity of the cell by facilitating transcription and replication processes. It's the largest organelle inside the cell taking up about a tenth of the entire cell volume.

3.) Cytoplasm - The cytoplasm is responsible for holding the components of the cell and protects them from damage. It stores the molecules required for cellular processes and is also responsible for giving the cell its shape.