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Biology I: Introduction to
Bio-molecules
Mr. Nettles
Agenda-Wed., Sept. 7, 2011
1.Warm-Up – 5 min
2.Lesson – 30 min
3.Wrap-Up – 5 min
4.Cell Projects (due Fri.) – 20 min
Today’s Objectives
• I will identify and distinguish between the four major groups of bio (organic) molecules.
• I will articulate five key things about lipids and proteins.
Warm-Up
1. What is the monomer of a nucleic acid?
2.What two organelles are related to carbohydrates ?
3.This an example of a___________.A. Sugar B. Protein C. Nucleic Acid
For each (bio) organic molecule, you NEED to know 5 things!
1. AKA (other names): other names it can be called
2. Monomer (building block): name of the monomer
3. Purpose (what it does): job in our bodies
4. Examples: things that are that organic molecule
5. Related organelles: what organelle it has to do with
Lipids
• AKA: Fats, oils, waxes
Lipids
• AKA: Fats, oils, waxes• Monomer: fatty acid
Lipids
• AKA: fats, oils, waxes• Monomer: fatty acid• Purpose: form boundaries
(makes up the cell membrane!)
Lipids
• AKA: Fats, Oils, Waxes• Monomer: Fatty Acid• Purpose: form boundaries (makes up
the cell membrane!)• Examples: lard, vegetable oil
Lipids
• Related organelle:
-Cell/Plasma membrane: made of lipids!
LipidsThink!
• What are the monomers of lipids called?
• Give one example of a lipid.
Proteins
• AKA: enzymes, polypeptides– Enzymes make up a significant part of
the cell membrane in living organisms.
Proteins
• AKA: enzyme, polypeptide• Monomer: Amino Acid
Purpose: What do proteins do?• Some control the rate of reactions
and regulate cell processes.
• Some are used to form bones and muscles.
• Others transport substances into or out of cells to help fight diseases.
Proteins
• AKA: enzyme, polypeptide• Monomer: Amino Acid• Purpose: Do the work of the
cell !!
Proteins
• AKA: enzyme, polypeptide• Monomer: Amino Acid• Purpose: Do the work of the cell !!• Examples: enzymes, lactase,
hemoglobin, insulin (suffix ‘ase’)
Proteins
• Related Organelle:
-Ribosome: makes proteins!
ProteinsThink!
• What are the monomers of proteins called?
• Give one example of a protein.
Carbohydrates, Nucleic Acids, Lipids, or Proteins?
Amino Acids
Form Boundaries
Monosaccharides
Does the work of the cell - carries out different cell functions like fighting disease and transporting substances in and out of the cell
Starch
Carry genetic information
Lactose
Nucleotides
DNA and RNA
Fats and Oils
Energy Production and Storage
Polypeptides
Lactase
Cell Membrane
Wrap-Up
1. What is the monomer of a lipid?
2.Give two examples of proteins?
3.Phosphatase is a __________.A. Lipid B. Protein C. Sugar