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Cell structures

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Cell structures & Functions Animal Cell Bacterial Cell Plant Cell Organelles Structures that carry out specific activities in the cell. Found in the cytoplasm Cell ... – PowerPoint PPT presentation

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Title: Cell structures


1
Cell structures Functions
Animal Cell
Bacterial Cell
Plant Cell
2
Organelles
  • Structures that carry out specific activities in
    the cell.
  • Found in the
  • cytoplasm

3
Cell membrane
  • Location Surrounding the cell
  • Function Controls the movement of materials into
    and out of the cell
  • Selectively permeable
  • Made of proteins and phospholipids

4
Cytoplasm
  • Location most of cell
  • Function jelly like substance that provides
    support for organelles, and a place for reactions
    to occur.

5
Nucleus
  • Location center of cell, bound by the nuclear
    membrane.
  • Function controls the normal activities of the
    cell.
  • Contains chromosomes

6
Nucleolus
  • Location inside Nucleus
  • Function makes ribosomes.

7
Ribosomes
  • Location cytoplasm, and on the Rough ER
  • Function structure on which proteins are made.

8
Endoplasmic Reticulum
A highly folded membrane used to move proteins
through the cell. Two types
  • Smooth ER
  • lacks ribosomes
  • Rough ER
  • has ribosomes
  • on its surface

9
Can you tell rough ER from smooth ER?
10
Golgi Apparatus
  • Flattened membrane bound sacs
  • Function packaging and distribution center

-Contains enzymes that modify proteins received
in vesicles from the ER. -Then repackaged in
new vesicles to be shipped out
11
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12
Lysosome
  • Small, spherical vesicles
  • Function Contains cells digestive enzymes
  • Breaks down foods, and worn out cell parts

13
Mitochondria
  • Function harvests energy from organic compounds
    to make ATP (energy)
  • Has its own DNA and ribosomes
  • Primitive prokaryotes are the ancestors of
    mitochondria

14
Cytoskeleton
  • Made up of Microtubules Microfilaments
  • Function Structure support

15
Plant Cells
16
Chloroplast
  • Function photosynthesis - traps sunlight to make
    sugars (food)
  • Contain green pigment called chlorophyll

17
Vacuole
  • Function stores compounds such as sugars,
    proteins, minerals, wastes, pigments, maintains
    cell structure (turgidity)
  • Large single central vacuole

18
Cell wall
  • Function Gives shape to cell, protection,
    support, prevents excess water entry Lysing
  • Made of cellulose, very rigid
  • Outside cell membrane

19
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20
Differences between plant cells and animal cells
  • Animal Cell
  • Smaller in size
  • Irregular shape
  • Nucleus in center
  • No cell wall
  • Vacuole small or none at all
  • No chloroplasts
  • Plant Cell
  • Larger in size
  • Regular shape
  • Nucleus against wall
  • Cell wall
  • Single large Central vacuole
  • Chloroplasts

21
Cells viewed in Lab
22
Cork Cells
23
Cheek cells
24
Elodea cells
10X
Chloroplasts
40X
100X
25
Onion Cell
Nucleus
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