Unicellular Organisms and Multicellular Organisms

Unicellular Organisms and Multicellular Organisms

Types of Organisms Unicellular Organisms vs. Multicellular Organisms Background information What What What What

What does micro mean? is a microscope? is an organism? does multi mean? is a cell? Micro Something very small.

When referring to an organism, it can NOT be seen without a microscope. Microscope What is a microscope? is an instrument used to see objects that are too small for the naked eye.

What is an instrument? In science, it refers to laboratory equipment or tools in a laboratory used by Scientists. This includes instruments such as a microscope. What is an Organism? Definition: Organism anything that can live on its own

Cells What is a cell? Cells are the basic building blocks of all living things. For example, the human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients

into energy, and carry out specialized functions. Unicellular Organisms Unicellular Organisms Definition: Unicellular organism an organism made of only one cell

Uni means one. Information: These organism are very small and need to be seen with a microscope. These organisms CANNOT be seen with the naked eye. Unicellular: Common Names

Microscopic Organisms Microorganisms Really small living things Examples of Unicellular Organisms Amoeba Unicellular fungi

Bacteria Unicellular yeasts Protozoa Paramecium (picture) Unicellular algae

Images of Unicellular Organisms More Images of Unicellular Organisms Multicellular Organisms Multicellular Organisms Definition:

Multicellular organism an organism made of two or more cells Information: These organisms are able to be seen with the naked eye. These organisms need all parts of itself to survive.

Common Names Many celled organisms Eukaryotic organisms Mammals Birds Reptile Fish Many others If you can SEE an organism, it is multicellular

Examples of Multicellular Organisms Humans Birds Cats Flowers Dogs

Mold Insects Trees Images of Multicellular Organisms

More Images of Multicellular Organisms Compare/Contrast Unicellular Organisms (one celled) organisms are good models for membrane transport, because they need to

perform MANY functions with one cell, rather than many types of cells. Multicellular organismsorganisms that consist of more than one cell, in contrast

to single-celled organisms. To form a multicellular organism, these cells need to identify and attach to the other cells. Review What type of

organism is a hamster? a. Multicellular b. Unicellular What is a unicellular organism? a. An organism with

many cells. b. An organism that requires a microscope to view it.

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