Lesson 1 – Intro – Structure and Function of Cell Components
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Transcript of Lesson 1 – Intro – Structure and Function of Cell Components
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Lesson 1 – Intro – Structure and Function of Cell
Components
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Molecular Cell Biology
Molecular Cell Biology is the study of the chemical reactions that occur within biological systems or…..
Biochemistry
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The Main Groups of MoleculesThe main groups of molecules found in cells are:
CarbohydratesLipidsProteins
Nucleic Acids
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Cellular Systems
The 2 important cellular systems we will study are:
Cell MembranesCytoskeleton
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Chemical CompositionLiving things are mostly made up of oxygen and beyond that there are actually very few different elements involved on a large scale.
OxygenCarbonHydrogenNitrogenPhosphorusSulphur
CHNOPS
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Carbon-based Life
Carbon is the basis for life on earth. It has the ability to make 4 covalent bonds with other atoms.
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Functional Groups
Carbon based molecules (organic molecules) often have active functional groups that help them to perform a specific chemical role.
How many do you know?On your desk draw out the following groups:Methyl, Hydroxyl, Carbonyl, Sulphydryl (thiol), carboxyl, Amino, Phosphate
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Methyl
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Hydroxyl
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Carbonyl
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Sulphyldryl
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Carboxyl
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Carboxyl - ionised
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Amino
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Amino - Ionised
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Phosphate
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Phosphate - Ionised
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Polymers
Polymers are macromolecules made up of smaller repeating subunits called monomers.
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Dehydration SynthesisPolymers are produced through a type of condensation reaction called dehydration synthesis.
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HydrolysisHydrolysis is the opposite of a condensation reaction. The large polymer gets broken up into monomers releasing water.
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Making and Breaking Bonds
Making bonds requires energy.
Breaking bonds releases energy.
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Your Task1. Refresh your chemistry – make
notes on and complete all activities in the Scholar 4.1 section. There will be a short quiz next week.
2. Learn the different functional groups.
3. Make notes on 2.1 Carbohydrates.