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EOC Review: Biochemistry, Enzymes, Cell, and Cell Transport Christopherson
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Monomer Single molecule One subunit Example: Single bead for a necklace
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Polymer Many molecules More than one subunit Example: Beads making up a necklace
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Four Macromolecules: Carbohydrates
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Monomer of a Carbohydrate Simple Sugar or Monosaccharide
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Polymer of a Carbohydrate Complex sugar
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Type of Carb: Monosaccharide Explanation: One sugar / Simple Sugar Example: Glucose or Fructose
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Indicator: Benedict’s Solution
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Positive Test: Turns Green to Red
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Type of Carb: Polysaccharide Explanation: Many Sugars
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Example of a Polysaccharides Cellulose: Provides structure for plants
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Example of a Polysaccharide Starch: Stored Energy in plants
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Examples of a Polysaccharide Chitin: Structure and support for insects and mushrooms
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Indicator: Iodine
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Positive Test: Turns Black
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Example of a Polysaccharide Glycogen: Stored energy in animals
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Carbohydrate Functions #1 Short term energy source Burn quickly Glucose
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Carbohydrate Function #2 Stored Energy Organisms store what they don’t use Glycogen and Starch
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Carbohydrate Function #3 Provide structure for plants, fungus, and insects
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Four Macromolecules: Lipids
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Lipids Also known as: Fats, Oils, and Waxes
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Indicator: Brown Paper Bag or Towel
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Positive Test: Grease Spot
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Lipids Function #1 Long term energy storage
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Lipids Function #2 Provide Insulation
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Lipids Function #3 Regulate water movement in and out of the cell
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Four Macromolecules: Proteins
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Protein Monomers and Polymers
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Indicator: Biuret’s
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Positive Test: Turns Purple
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Proteins Function #1 Make up the structure and function of muscles
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Proteins Function #3 Blood has hemoglobin (protein) which helps transport oxygen
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Proteins Function #4 Insulin (protein) helps glucose move from our bloodstream to our cells
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Protein Function - #5 Enzymes (Protein) fuel every chemical reaction in organisms. Helps form bonds and break things down
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Four Macromolecules: Nucleic Acids
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Nucleic Acids Elements present: Only one with P Monomer: Nucleotide
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Nucleic Acid Function #1 Responsible for an organisms genetic make-up (DNA)
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Nucleic Acid Function #2 Usable form of energy (ATP)
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Nucleic Acid – Function #3 Makes Proteins: RNA
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Chemical Reaction Occurs when bonds are broken or formed to create a new substance Reactants Products
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Characteristics of Enzymes #1 Enzymes are biological catalysts; speed up the rate of reaction
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Example of Enzymes as Catalysts
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Characteristics of Enzymes #2 Enzymes are site specific One enzyme = One job
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How Enzymes Work
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Environmental Effects on Enzymes 1.Temperature* High Temperatures can denature enzymes Denature means lose shape (active site).
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Environmental Effects on Enzymes 1.pH Dramatic changes in the pH of a solution can denature an enzyme Decreasing enzyme activity
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Eukaryotic Cell Definition Complex cells that have “membrane- bound” organelles. “Membrane-bound” means that they have an outer layer.
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Two main types of Eukaryotic Cells 1. Animal Cell 2. Plant Cell
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Nucleus Location: Large circle typically in the middle of the cell Function: Control center of the cell; location of DNA
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Ribosomes Location: Small dots all over the cell Function: Location of protein synthesis; where proteins are made
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Mitochondria Function: Breaks down sugar into ATP (usable form of energy); Powerhouse of the cell Location: Throughout the cell
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Chloroplast Location: Green “beans” throughout a plant cell Function: Location of photosynthesis; process by which plants make food
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Vacuole Location: Throughout an animal cell; makes up the majority of a plant cell Function: Stores water, food, waste, etc.
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Location: Outer layer of the cell Function: Control what comes in and out of the cell; gatekeeper Cell/Plasma Membrane
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Homeostasis The ability of an organism to adjust its internal environment to keep it stable.
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Cell Wall Location: Layer outside of the cell membrane in some organisms Function: Provide structure and support
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Plants Cell Wall
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Bacteria Cell Wall
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Fungus
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Phytoplankton Cell Wall
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Prokaryotic Cell Definition Simple cells that lack “membrane- bound” organelles. “Membrane- bound” means that they have an outer layer.
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Examples of Prokaryotic Cells: Bacteria
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Differences between Prokaryotic and Eukaryotic Cells
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Cell Specialization Nerve Cell: Conducts messages throughout organisms
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Cell Specialization Muscle Cell: Stretches and contracts like a rubber band; allows muscles to work
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Cell Specialization Blood Cell: Shaped like flat discs; Allows for more surface area for oxygen attachment
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Cell Specialization Sperm Cell: Possesses a tail; allows for movement to the egg
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Cellular Transport Christopherson
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Where are WE? Organism Tissue Cell Transport is fueled by the need of the cell to maintain homeostasis
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Diffusion Movement of particles from an high concentration to a low concentration; reach homeostasis HighLow
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What is concentration? The amount of a substance High concentration means there is a lot present
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Substances that can diffuse across the cell membrane
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Osmosis Movement of WATER from a high to a low concentration
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Hint: a. Water will ALWAYS move to the higher concentration of dissolved substances.
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Hint: b. Solute SUCKS solvent (water)!!!! Solute Water
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Isotonic Solution Cell remains same size Water moves in and out at same rate (time) The concentration of dissolved substances is equal in and out of cell.
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Hypotonic Solution Cell swells Water moves in The higher concentration of dissolved substances is __________ the cell.
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Hypertonic Solution Cell shrinks Water moves out The higher concentration of dissolved substances is __________ the cell.
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Two types of transport in cells Passive Transport : Movement of particles from a high to a low concentration
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Two types of transport in cells Active Transport : Movement of particles from a low to a high concentration; ATP is needed ATP LOWHIGH
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