chapter 2 cells section 1 cell structure pages 38 40
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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. 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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common cell traits
COMMON CELL TRAITS
  • A cell is the smallest unit that is capable of performing life functions.
comparing cells
COMPARING CELLS
  • The size & shape of a cell relates to its function. (job it does)
prokaryotic cells proh kayr ee yah tihk
Prokaryotic Cells(proh KAYR ee yah tihk)
  • cells without membrane-bound structures
  • EX: bacteria

pond scum

eukaryotic cells yew kayr ee yah tihk
Eukaryotic Cells(yew KAYR ee yah tihk)
  • cells with membrane-bound structures
  • EX: animals, plants, fungi and protists
cell wall
CELL WALL
  • protects the cell
  • gives shape
  • is made of cellulose
  • A cell wall is found in plants, algae, fungi, & most bacteria.
cell membrane
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
CYTOPLASM
  • gelatin-like inside cell membrane
  • constantly flows
  • aka protoplasm
cytoskeleton
CYTOSKELETON
  • scaffolding-like structure in cytoplasm
  • helps the cell maintain or change its shape
  • made of protein
nucleus
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
NUCLEAR MEMBRANE
  • separates nucleus from cytoplasm
  • controls movement of materials in & out of nucleus
nucleolus
NUCLEOLUS
  • Aka “little nucleus”
  • Found in the nucleus
chromatin
CHROMATIN
  • contains genetic code that controls cell
  • made of DNA & proteins
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