Chapter 4 parts of a cell
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Chapter 4 : Parts of a cell. Cell Theory: 1600’sRobert Hooke – discovered cells. Organells; parts or “organs” of cells. Nucleus: control center. Nuclear membrane Chromatin – DNA tangles Nucleolus – produces ribosomes. Plasma or Cell Membrane. Maintains homeostasis

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Chapter 4 : Parts of a cell

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Chapter 4 parts of a cell

Chapter 4 : Parts of a cell

Cell Theory: 1600’sRobert Hooke – discovered cells


Organells parts or organs of cells

Organells; parts or “organs” of cells


Nucleus control center

Nucleus: control center

  • Nuclear membrane

  • Chromatin – DNA tangles

  • Nucleolus – produces ribosomes


Plasma or cell membrane

Plasma or Cell Membrane

  • Maintains homeostasis

  • Controls what goes into and out of the cell


Cell wall plants and fungus cells only

Cell Wall – Plants and Fungus cells only

  • Function – protection and support

  • Made up of cellulose or chitin


Cytoplasm

Cytoplasm

  • Material that organells are suspended into


Endoplasmic recticulum er

Endoplasmic Recticulum (ER)

  • Function – assembly and transport of proteins

  • Folded system of membranes

  • Two types of :

    • Rough ER- ribosomes

    • Smooth ER


Golgi complex

Golgi Complex

  • Function – receives proteins from ER, packages and ships proteins


Lysosomes

Lysosomes

  • Function – digestion, (worn out cell parts, food particles, invading bacteria)_


Vacuole

Vacuole

  • Membrane bound organelle, bubble

  • Function – store food, store waste


Mitochondria power house

Mitochondria – Power House

  • Function: furnish energy by breaking down “food”

  • Production of ATP


Chloroplasts plants only

Chloroplasts – plants only

  • Function – photosynthesis, a type of plastid


Cilia and flagella movement

Cilia and flagella- movement

  • Allows cells to move

  • Cilia – short hairlike structures surrounding the cell

  • Flagella - tail


Two types of cells

Prokaryote

No organells

No nucleus

Ex. Bacteria

Eukaryote

True cells

Have a nucleus and membrane bound structure

All other cells

Two Types of Cells

http://www.earthlife.net/prokaryotes/welcome.html


Cell size

Cell Size

  • Cells need surface area large enough to allow for the exchange of materials.

  • Which cell above has the most surface area?

  • Does it matter if a cells grows too large?


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