How does a cell become an organism?

Today, you will learn… That cells of similar structures are organized into tissues That several tissues may make up an organ That organs are organized into systems To explain the significance of division of labor

Let’s discuss: What are the main functions of a cell? _______________________________________ What are the main functions of an organism? _____________________________________________________________________________________________________________________________________________________________________

Unicellular Organisms

Unicellular Organisms Paramecium __________________organism Found on ______________ (ex. Pond, river) Has _______ surrounding the body for __________________ Has a ________________ Can/does it perform all functions it needs to stay alive?

Unicellular Organisms Amoeba Often found at ________ of ponds or under rocks Does not move fast No arms, legs, eyes, mouth Eats by ________________________________________________ Lives only for _____________ Reproduce by ______________________________________________________________________________

Multicellular Organisms Have _______________________________ Different cells perform different ___________ Examples ___________________ Leaf cells

Cells in a Human Examples _____________________ (transports oxygen) _____________________ (have nerve fibers to transmit signals to and from the central nervous system)

Cells in a Plant Examples _____________________ (absorbs water from the ground) _____________________ (allows air to enter the leaf)

From cells to tissues Tissue __________________________________________________________________________________

Tissues in a human ________________ tissue _________________ tissue to _________ structure beneath it ______ body parts together _______ or ___________ all parts of an organism

Tissues in a human ______________ tissue Cause _______________ Carry _____________ from one part of body to another by ________________________________________

Tissues in a plant _______________ tissue Protects plant against injury and losing too much water Transports materials within a plant

Tissues in a plant ________________________ tissue Carries out photosynthesis in a plant

From tissues to organs Organs ____________________________________________________________________________________________________________________________________________________________________

Organs in a human Examples _______________

Organs in a plant Examples _______________

From organs to systems Systems ___________________________________________________________________________________________________________________________

Main organ systems in a human _______________ l system

The Human Body

Division of Labor Each cell in a multicellular organism ________ perform ________ of the bodily functions Each type of cell ___________ in performing ______ particular _______________________ __________________ functions in a multicellular organism can be performed __________________ by _________________

Division of Labor Division of labor _____________________________________________________________________________________________________________________________________________________________________________________________________________