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CellsStructures and Functions
Cells work together to form tissues. Tissues work together to form organs. Organs work together to form organ
systems. Organ Systems work together to form
Organisms.
Cellular Organization:
Worksheet:◦ Read the directions
and complete the worksheet on cellular organization.
Cellular Organization:
Unicellular – organisms that are made of only one cell.
Multicellular - organisms that are made of more than one cell.
Types of cells…
Prokaryotic – these are cells that DO NOT have a nucleus.◦ BACTERIA!!!
Eukaryotic – these are cells that DO have a nucleus.◦ You!!!
Types of cells…
Organelles – tiny structures found inside of cells.
Cell Structures and Functions:
Can you point out some cell organelles?
Nucleus – directs all cell activities.
Cell Structures and Functions:
Cell Membrane - protective outer membrane of a cell that allows only certain materials to pass into and out of a cell.
Cell Structures and Functions:
Cytoplasm – gel-like material inside the cell membrane and outside the nucleus.
Cell Structures and Functions:
Endoplasmic Reticulum - folded membrane that moves materials around in the cell (transportation system).
Cell Structures and Functions:
Mitochondria - organelles that break down food and release energy.◦ The Power House of the cell!
Cell Structures and Functions:
Cell Wall – rigid structure made of cellulose that supports and protects the plant cell.◦ Always found outside of the cell membrane.
Cell Structures and Functions:
Chloroplast - organelles in plant cells that change light energy into chemical energy in the form of a sugar.◦ PHOTOSYNTHESIS!!!
Cell Structures and Functions:
Vacuoles - storage tanks for the cell (food, water, and waste).
Cell Structures and Functions:
Can you guess the organelle?
Can you guess the organelle?
Can you guess the organelle?
Can you guess the organelle?
Can you guess the organelle?
Can you guess the organelle?
Can you guess the organelle?
Can you guess the organelle?
