Structure & Function of Cells Cell Theory Structure & Function of Cells

Cell Theory The cell theory states that (1) all living things are made of cells; (2) cells are the basic units of structure and function in living things; and (3) living cells come only from other living cells.

The Microscope The invention of the microscope made it possible to discover cells. Robert Hooke used to discover cells.

Structures and Functions of Cells Cell wall gives protection and support to the plant cells.

Structures and Functions of Cells The cell membrane regulates the movement of materials into & out of the cell.

Structures and Functions of Cells Nucleus is the control center of the cell

Structures and Functions of Cells Mitochondria are the “powerhouse” of the cell.

Structures and Functions of Cells Chloroplast capture the energy from the sun and uses it to make food for the plant cell.

Structures and Functions of Cells Vacuoles store food, water, and waste.

Structures and Functions of Cells Endoplasmic Reticulum Rough ER makes proteins Smooth ER makes lipids

Structures and Functions of Cells The packaging center of the cell Prepares lipids and proteins for shipment across the membrane The Golgi Apparatus

Structures and Functions of Cells Lysosomes digest excess or worn-out organelles, food particles, and engulf viruses or bacteria. The Waste Management Center of the Cell

Heart Cells Pumping

Cell Processes The sum of all the activities that occur in a living cell is called metabolism.

Cell Processes In aerobic respiration, energy is released from food with the help of oxygen.

Cell Processes Food, oxygen, water and other materials enter and leave the cell by a process called diffusion.

Cell Processes Water passes through the cell membran e by a type of diffusion called osmosis.

Cell Processes Mitosis is the division of the nucleus and the cytoplasm and the duplication of the chromosomes.

T-Rex Blood Cells