• A cell is the basic, living, structural and functional unit of the body.
• Cytology is the science concerned with the study of cells.

Cell Function
• Like other anatomical structures, cells exhibit a particular size and form because they are intended to perform a certain function.

• Cells structure allows it to receive & transmit signals to other parts of the body.

• The structure of blood cells allow it to transport
Oxygen, toxins, etc.

• Its structural surface allows the white blood cells to attach to invading pathogens and engulf them.

• Although no typical cell exists, the majority of cells share similar structures.

• Surrounds the cell and separates it from other cells and the external environment.
• It is composed primarily of proteins and phospholipids.

Functions of the Plasma Membrane
• Functionally, the plasma membrane facilitates contact with other cells, provides receptors, and mediates the passage of materials.
• The membrane's selectively permeable nature restricts the passage of certain substances.

• Cytoplasm is the substance inside the cell that contains organelles and inclusions.

• The nucleus controls cellular activities and contains the genetic information.
• Cells without nuclei, such as mature red blood cells, do not grow or reproduce.

• Functionally, ribosomes are the sites of protein synthesis.

• The ER provides mechanical support, conducts intracellular nerve impulses in muscle cells, exchanges materials with cytoplasm, transports substances intracellularly, stores synthesized molecules. and helps export chemicals from the cell.

• Mitochondria:
• The mitochondria are called
"powerhouses of the cell" because ATP is produced in them.
• Golgi Complex (Golgi Body):
• They collect secretory products and package for export or cell use.
• Lysosomes:
• Lysosomes are spherical structures that contain digestive enzymes. They are formed from
Golgi complexes.

Cell Lab
• Question: How does the structure of a cell dictate function?
• Hypothesis: I believe structure affects function by…..
• Procedure: You will observe, draw, and label 5 types of cells. TRY to draw ONLY a CELL. NOT the whole slide.
• Data: On your drawing, label the nucleus, cell membrane, & cilia/flagella if present.
Cell Type
(check slide name)
Drawing Function of cell
• Conclusion: Describe what you found.