Cellular Life

1
Cellular Life

• Unicellular organism single celled organism
• Multicellular organism
• organism w/ many cells

2
Cell Theory

• 1. All living things are composed of one or more
  cells.
• 2. Cells are the smallest, basic unit of life.
• 3. New Cells come only from other living cells.

3
Types of Cells

• Prokaryotes NO membrane bound organelles (like
  your organs each serve a particular function to
  help keep you alive)
• Mainly lacking a nuclear membrane
• Some have ribosomes
• unicellular
• Eukaryotes have membrane-bound organelles.
• Mostly multicellular, although some exceptions
  exist.

4
Plasma Membrane

• Phospholipid bilayer
• Polar outsides
• Likes water (__________)
• Nonpolar insides (fatty acids like oil in
  vinegar)
• Hates water! (_________)
• Helps maintain equilibrium
• Numerous proteins throughout
• Mainly for transport in and out of cell

http//home.earthlink.net/shalpine/anim/Life/memb
.htm
5
Macromolecules

• More advanced tutorial on Macromolecules

Carbohydrates http//www.wisc-online.com/objects/i
ndex_tj.asp?objidAP13104 Lipids
http//www.wisc-online.com/objects/index_tj.asp?ob
jidAP13204 Proteins http//www.wisc-online.com/o
bjects/index_tj.asp?objidAP13304
6
Lipids

• Fats!
• Long Chains of _______
• ________.
• Many different types
• Most common triglycerides
• Phospholipids 1 fatty acid replaced with
  phosphate group

7
Proteins

• Chains of Amino Acids
• Provide structure for tissues and organs and help
  w/ metabolism
• Amino acids connected with covalent bonds
  (called __________________)
• Enzymes proteins found in living things that
  change the rate of a reaction!

8
Carbohydrates

• Composed of carbon, hydrogen and oxygen bonded
  covalently.
• Monosaccharide single sugar (glucose or
  fructose)
• Disaccharide 2 sugar molecules bonded
• Ie. ________ (table sugar!)
• Polysaccharide multiple _________ bonded
  together.
• Ie. Starch, Glycogen, Cellulose (plant sugar!)