The following is a sketch of ______. 

The correct answer is a fat cell.

Concept:

Cell:

• It is the fundamental unit of life.
• All organisms are made up of cells.

Explanation:

Structure of cell:

• A cell has three components:
  • Cell membrane 
  • Cytoplasm
  • Nucleus 

Variety of cells:

• Cells can be of different shapes and sizes. 
• There can be different types of cells in an organism. 

Given below are some examples of cells found in the human body:

Additional InformationBacterial cell: it is a prokaryotic cell that lacks a well-developed nucleus and other cell organelles. 

Plant Cell: Eukaryotic cell with a cell wall made up of cellulose and chloroplasts containing chlorophyll pigment.

Muscle cell: The special type of cell made up of contractile proteins that provide the muscle the ability to contract and relax.