chemical reactions and enzymes
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Chemical Reactions and Enzymes. Do Now. Ice melting in the Arctic at record pace So what? Why is the entire world jockeying for this melted territory?. Homework. Answer Questions 1-7 of the Chapter 2 Assessment. Review. - PowerPoint PPT PresentationTRANSCRIPT
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Chemical Reactions and Enzymes
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Do Now
Ice melting in the Arctic at record pace
So what? Why is the entire world jockeying for this melted territory?
![Page 3: Chemical Reactions and Enzymes](https://reader035.vdocuments.us/reader035/viewer/2022062811/56816094550346895dcfbc23/html5/thumbnails/3.jpg)
Homework• Answer Questions 1-7 of the Chapter 2 Assessment
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Review• Because Carbon has 4 valence electrons, it can create strong
covalent bonds with other elements• Bonds can be:
• Single• Double• Triple
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Review• These are massive amounts of molecules.• Formed by polymerization
• Combining small compounds to create larger ones• Smaller ones – monomers • Larger – Polymers• Divided into four categories
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Review• Carbohydrates• Lipids• Nucleic acids• Proteins • Where do we see these in everyday life?
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Carbohydrates•Simple sugars – Monosaccharides
• Galactose – milk• Fructose – fruit
Complex Sugars• Marcromolocules created from monosaccharides
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Lipids• Fats, oils and waxes• Not soluble in water• Used to store energy
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Saturated/Unsaturated Lipids• SATURATED• Carbon joined by a single bond with hydrogen• Maximum number of Hydrogen bonds
•UNSATURATED• At least 1 carbon double bond
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Nucleic Acid• Macromolecule
• Hydrogen, oxygen, nitrogen, carbon and phosphorus• Transmits and stores genetic information• 2 kinds of nucleic acid:• DNA and RNA
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Protein• Contain nitrogen, carbon, hydrogen and oxygen•ACTION• For important cellular structures• Transport substances in and out of cells to fight disease
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Chemical Reactions• Changes one set of chemicals to another• Involve changes in the chemical bonds that join atoms in
compounds.• What can be applied to a set of chemicals that can change
their shape?• How can you change waters shape?
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Enzyme• Catalyst – Speeds up the rate of a chemical reaction• Less energy needed to be applied to create reaction
Exampleoxidation of hydrocarbons in automobile exhaustsCatalyst: copper(II) oxide, vanadium(V) oxide, platinum, palladium
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Homework• Answer Questions 1-7 of the Chapter 2 Assessment