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


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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).

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

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Chapter 2 cells section 1 cell structure pages 38 40 l.jpg

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

LESSON 1


Common cell traits l.jpg

COMMON CELL TRAITS

  • A cell is the smallest unit that is capable of performing life functions.


Comparing cells l.jpg

COMPARING CELLS

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


Prokaryotic cells proh kayr ee yah tihk l.jpg

Prokaryotic Cells(proh KAYR ee yah tihk)

  • cells without membrane-bound structures

  • EX: bacteria

    pond scum


Eukaryotic cells yew kayr ee yah tihk l.jpg

Eukaryotic Cells(yew KAYR ee yah tihk)

  • cells with membrane-bound structures

  • EX: animals, plants, fungi and protists


Cell wall l.jpg

CELL WALL

  • protects the cell

  • gives shape

  • is made of cellulose

  • A cell wall is found in plants, algae, fungi, & most bacteria.


Cell membrane l.jpg

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.


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CYTOPLASM

  • gelatin-like inside cell membrane

  • constantly flows

  • aka protoplasm


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CYTOSKELETON

  • scaffolding-like structure in cytoplasm

  • helps the cell maintain or change its shape

  • made of protein


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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


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NUCLEAR MEMBRANE

  • separates nucleus from cytoplasm

  • controls movement of materials in & out of nucleus


Nucleolus l.jpg

NUCLEOLUS

  • Aka “little nucleus”

  • Found in the nucleus


Chromatin l.jpg

CHROMATIN

  • contains genetic code that controls cell

  • made of DNA & proteins


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