Unit+02+Chemistry+in+Biology

a) The atom is composed of **protons**, **electrons** and **neutrons**. ([|Click Here For Video]!) b) A **covalent bond** shares electrons. ([|Click Here For Video]!) ([|Click Here For Video]!) c) An **ionic bond** steals electrons. ([|Click Here For Video]!) ([|Click Here For Video]!) d) A **hydrogen bond** is a weak bond with an unequal share of electrons. ([|Click Here For Video]!) e) An **element** is a pure substance whereas a **compound** combines multiple types of elements. ([|Click Here For Video]!) ([|Click Here For Video]!) a) **Cohesion** allows water to form rain drops. ([|Click Here For Video]!) ([|Click Here For Video]!) b) **Adhesion** allows water to stick to other surfaces. ([|Click Here For Video]!) c) **Water absorbs heat** slowly but retains it longer than other substances. ([|Click Here For Video]!) a) A **solution** is created when one substance is evenly distributed within another. b) The **pH scale** measures the strength of acids and bases. ([|Click Here For Video]!) c) An **acid** creates more hydrogen ions when added to water. d) A **base** creates more hydroxide ions when added to water. a) The four **organic compounds** include carbohydrates, proteins, lipids, and nucleic acids. ([|Click Here For Video] !) b) **Carbohydrates** are broken down into monosaccharides, which are used as a source of energy. ([|Click Here For Video]!) c) **Proteins** are broken down into amino acids, which are used for building muscles and protection against diseases. ([|Click Here For Video]!) d) **Lipids** are broken down into fatty acids, which are used for building cell membranes and storage of energy. ([|Click Here For Video]!) e) **Nucleic acids** are broken down into nucleotides, which are used for holding hereditary information or making proteins. ([|Click Here For Video]!) a) Chemical reactions **absorb or release energy**. b) **Energy is released from food** and stored in the form of ATP for cells to use. c) **Enzymes** help speed up chemical reactions. ([|Click Here For Video]!) ([|Click Here For Video]!) d) How **pH & temperatures** affect enzyme activity. a) Relate the importance of the **//cycling//** of chemicals in the **Carbon Cycle**, **Nitrogen Cycle** & **Water Cycle** to the needs of living organisms. ([|Click Here For Video]!) b) Relate the **//flow//** of Energy through **food webs**, **food chains** and the **food pyramid**. ([|Click Here For Video]!) ([|Click Here For Video]!) || * Atom media type="youtube" key="yQP4UJhNn0I" width="425" height="350"
 * __Unit 2:__ CHEMISTRY OF LIFE**
 * **//Must Knows//** [|Click Here For Powerpoint!] ||  **//Key Vocabulary//**  ||
 * **1)** **Students will be able to explain how atoms interact.** (p. 28-30)
 * 2)** **Students will be able to describe the different properties of water.** (p. 31) ([|Click Here For Video]!)
 * 3)** **Students will be able to describe how water dissolves substances.** (p.32-33)
 * 4)** **Students will be able to summarize the characteristics of organic compounds.** (p. 34-37)
 * 5)** **Students will be able to explain the importance of ATP.** (p.37-42) ([|Click Here For Video]!)
 * 6)** **Students will be able to connect the chemistry to the living world.** (p.345-354)
 * Protons
 * Electrons
 * Neutrons
 * Element
 * Compound
 * Molecule
 * Bond
 * Chemical Formula
 * Ion
 * Polarity
 * Cohesion
 * Adhesion
 * Solution
 * Soluble
 * Acid
 * Base
 * Organic Compound
 * Carbohydrates
 * Glucose
 * Glycogen
 * Starch
 * Monosaccharide
 * Disaccharide
 * Polysaccharide
 * Lipid
 * Protein
 * Polypeptide
 * Amino Acid
 * Nucleic Acid
 * Nucleotide
 * DNA
 * Heredity
 * RNA
 * ATP
 * Energy
 * Activation Energy
 * Enzyme
 * Substrate
 * Active Site ||

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__**Unit 2 Documents**__