Chapter 2 “Cells” Section 1: “Cell Structure Pages 38 – 40

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Presentation transcript:

Chapter 2 “Cells” Section 1: “Cell Structure Pages 38 – 40 LESSON 1

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, oxygen, & water into the cell & waste products out of the cell.

CYTOPLASM gelatin-like inside cell membrane constantly flows aka protoplasm

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

CHROMATIN contains genetic code that controls cell made of DNA & proteins

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