Characteristics of Life

Cellular organization contain similar chemicals use energy grow and develop respond to their enviroment reproduce

Unicellular: single celled Multicellular: many celled

the basic unit of life

Growth: The process of becoming larger Development: The process of change that occurs during an organisms life to produce a more complex organism

A stimulus is a change in an organisms surroundings which causes the response

energy water living space stable internal conditions(homeostatis)

Autotroph: organisms that make their own food for energy(plants) Heterotrophs: organisms that can not make their own food(animals)

Robert Hook: He used a microscope to observe “cork” cells Anton Van Leeuvenhoak: He observed tiny single celled organisms Mattias Schleidan: he conclude that all plants are made of cells Theodor Schwann: concluded all living things are made of cells including animals

• cells are the basic unit of life • all living things are made of cells • all cells come from other cells

Simple microscope: single lens, only used to magnify Compound microscope: a light microscope that has more than one lens Electron microscope: use a beam of electrons instead of light

Plants are autotrophs and animals are heterotrophs. Plant cells have a bigger vacuole than animal cells. Animal cells have lysosomes unlike plant cells.

Control center of the cell.

Controls what comes into and out of the cell.

Clear, thick, gel-like fluid that contains the organelles.

Passageways that carry protiens and other materials from one part of the cell to another

Produce protiens

The “power house” of the cell because they produce most of the energy that the cell needs

Recieves the protiens from the ER, packages them, and sends them to other parts of the cell

3 functions: Breaks down food to be used, collects and breaks down old unused organelles, and helps fight off bacteria and viruses

Storage area of the cell (stores water, food, and waste)

Plants only, and capture energy from sunlight to produce food for the cell

Plant cell only, and helps protect and support the cell