LESSON Cell Structures.

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Presentation transcript:

LESSON Cell Structures

COMMON CELL TRAITS A cell is the smallest unit that is capable of performing life functions.

COMPARING CELLS The size & shape of a cell relates to its function. (job it does)

Prokaryotic Cells (proh KAYR ee yah tihk) cells without membrane-bound structures EX: bacteria pond scum

Eukaryotic Cells (yew KAYR ee yah tihk) cells with membrane-bound structures EX: animals, plants, fungi and protists

CELL WALL protects the cell gives shape is made of cellulose A cell wall is found in plants, algae, fungi, & most bacteria.

CELL MEMBRANE Outer covering, protective layer around ALL cells For cells with cell walls,the cell membrane is inside the cell wall Allows food, dioxygen, & water into the cell & waste products out of the cell.

CYTOPLASM gelatin-like inside cell membrane constantly flows

NUCLEUS Directs all cell activities Contains instructions for everything the cell does These instructions are found on a hereditary material called DNA Usually the largest organelle

NUCLEAR MEMBRANE separates nucleus from cytoplasm controls movement of materials in & out of nucleus

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