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| 14. What are the differant types of Chemical Bonds? |
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| Chemical bond between atoms formed by the transfer of one or more electrons from one atom to the other. |
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Electron sharing produces molecules in which the shared electrons occupy a single orbital common to both atoms.
Formed by the Sharing of two or more electrons |
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| Electrons shared equallyy between atoms produce _______ molecules |
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| Unequal sharing of electrons produces _______ molecules. |
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| Atoms with six or seven valence shell electrons are ______. |
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| Atoms with one or two valence shell electrons are _______. |
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Chemical bond between a hydrogen atom in one compound with an electronegative atom of another compound.
Too weak to bind atoms together
Common in dipoles
responsible for surface tension in water |
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| 17. Metabolism, what are its components? |
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Anabolism - the building of the structure
Catabolism- the breaking down of structures. |
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| What are the properties of water that make it vital to sustain life? |
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1. High heat capacity - absorbs and releases high amounts of heat before changing temp.
2. High heat of vaporization- change from a liquid to gas requires large amounts of heat.
3. Polar Solvent Properties- dissolves ionic substances, forms hydration, serves body as a transport medium
4. Reactivity- an important part of hydrolysis and dehydration synthesis reactions
5. Cushioning- resilient cushion around certain body organs. |
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| How do buffers resist large sings in PH? |
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| Buffers resist large swings of PH by releasing hydrogen ions when the PH begins to rise and by binding hydrogen ions when the PH drops. |
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| What is the composition of Carbohydrates? |
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| Contain Carbon, Hydrogen, and oxygen |
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| What is the composition of lipids? |
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Contains Carbon, Hydrogen and Oxygen
C,H, and O
Oxygen is less in lipids than in Carbohydrates. |
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| Composition of Nucleic Acids |
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| Carbon Oxygen Hydrogen Nitrogen and Phosphourus |
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| What is the function of an enzyme? |
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Ability to speed up chemical reactions without directly interering with those reactions themselves.
Enzymes are chemically specific for the molecules they react with.
Primary function is to lower activation energy. |
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| Be able to describe the cell theory. (written portion) |
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1. A cell is the basic structural and functional unit of life
2. Organismal activity depens on individual as well as collective activity of cells
3. Biochemical activites of cells are dictated by their subcellular structure
4. Continuity of life has a cellular basis. |
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| What is the fundamental division of all cells? |
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