Cell Parts (cont.)
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Transcript Cell Parts (cont.)
Cell Anatomy
Super-Dooper Cell
Notes
Cell
Basic
Unit of structure and
function of all living things
All cells have little organs,
called Organelles, inside.
Cell Parts or Organelles
3.
Nucleus: “Control Center”
Contains the genetic information “DNA”
Usually near the middle (center) of the cell
surrounded by a nuclear membrane
Nucleoli
: Place where ribosomes are made.
Parts of a Cell
1.
Cell (Plasma) Membrane--”gatekeeper”
Lets some things in
and somethings out
Encloses the cell
(double layer of fat
and proteins)
Cell Membrane
See figure 3.2 page 58
Cell Parts (cont.)
2.
Cytoplasm: “Living stuff”
All the chemical reactions take place here!
Jello-like fluid that gives the cell shape
and holds the organelles (little organs).
Cell Parts (cont.)
7.
Mitochondria- “Powerhouse”
Respiration center--sugar is burned to
create Energy!
Cell Parts (cont.)
4.
Ribosomes: “protein factories”
Proteins are made here!!
Think spots or dots!
Cell Parts (cont.)
5.
Endoplasmic Reticulum (ER)-”Canal
System”
Rough ER: Circulatory system for carrying
things around the cell
carries ribosomes that make
protein.
Smooth ER-no ribosomes
But makes cholesterol
and fats and detoxifies drug
Cell Parts (cont.)
6.
Golgi Apparatus
stack of flattened sacs
Traffic director for modifying and
packaging proteins to be sent around the
cells.
It puts the address on the protein
Cell Parts (cont.)
8.
Lysosome - “Garbage disposal, suicide
sac”
Contain digestive enzymes to break up
worn out cell parts and invaders like
bacteria
Sometimes digest really bad stuff and die
so the cell can live.
Look like waffles
Peroxisome
Membrane sacs containing enzymes to
detoxify harmful substances and disarm
free radicals.
Destroys free radicals.
Cell Parts (cont.)
9.
Cytoskeleton- “Wonder bra”
Gives cell support and shape
Helps cells to move
Cell Parts (cont.)
10.
Centrioles - “cellular churros”
Helps cells to divide
Lie close to the nucleus
Cilia
Whip substances along like mucus in the
respiratory system being whip up from the
lungs.
Cell projections like hairs
Flagella
Longer than cilia. They move cells along
Example is the tail on the sperm
Microvilli
Finger-like projections that
increase the surface area of
the cell
Cell Parts (cont.)
11.
Vacuole- “Water Tower”
Stores water
Look like bubbles