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what are the three basic themes in biology?
- Evolution
- Information transfer
- Energy
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what are the characteristics of life (6)?
- cells
- growth and development
- metabolism
- response to stimuli
- reproduction
- evolution and adaptation of populations
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Define emegant properties
Characteristics of an object, process, or behavior that could not be predicted from its component parts; emergentproperties can be identufied at each level as we move up the hierarchy of biological organisms.
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Define reductionism?
Breaking things down to study them, braking things down into smaller and smaller forms to study them.
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The two unifying theorys of biology?
- -Cell thoery
- 1)Cell is a fundimental unit of life
- 2)Chemical reactions of an organism that have a cellur basis
- 3)All cells come from previos cells
- 4)Genetic material is in the cells
- -Evolution
- 1)Evolution is the process whereby population/species of an organism change over time by way of natural selection.
- 2)States that all life past and present share a commoon ancestary.
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Prokaryotic vs. Eukaryotic
- Prokaryotic
- 1) Lack a nucleous and other membrane enclosed organells, include bacteria, arechea
- Prokaryotic
- 1)Plants, animals, fungi
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Define darwin and natural selection?
- 1)The better adatped organisms are going to out compete the lesser adapted organisms and get more of the natural resoures and reproduce more.
- 2)It shows how organisms are elemenated from nature.
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What is the domain of science?
Nature.
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Explain Deduction?
- Hypothessis formulation and testing.
- Tends to be more accurate then induction
- If then kind of format
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Explain Induction?
- Looks at some specific examples and then draws some very broad and genral conclutions.
- Not as good as Deduction
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Whats the Scientific Process?
- Observation
- Hypothesis
- testing
- results
- conclution
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Hypothesis vs. Therory?
- Hypothesis
- 1) Is the more temperary one, a good hypothesis should be testable.
- Therory
- 1)Has been developed over time and supports data.
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Carl Linnaes and taxonomy, why is it so successful?
- Hierarchal in nature.
- Species names are in bionomials.
- Two part to each name(Genes, apithet)
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The three biological domains are?
- Bacteria
- Eukarya
- Archaea(which are all taxonomy catagories)
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Elements and Isotopes?
- Element
- 1)A substance that can not be changed to a simpler substance by a normal chemical reaction.
- 2)Atoms are the smallest unit of an element.
- Isotopes
- 2)Different forms of a particular elements are Isotopes.
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Where are Protons, Neutrons, and Electrons and what are there charges?
- Protons are located in the nucleous and have a positive charge.
- Neutrons are located in the nucleous and have a negitive charge.
- Electrons are whirrling outside the nucleous and have no charge.
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What particles defines or desquishes different elements?
Protons.
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What does the atomic mass mean?
Number of protons it has.
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What does the Mass Number mean?
Protons and Neutrons it has combined.
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Which particle destingquishes different isotopes of all the same element?
Neutrons.
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Which particle determines the chemical behavior of an atom?
Electron.
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What are the four main elements of life?
- Hydrogen.
- Carbon.
- Oxygen.
- Nitrogen.
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Valence, Duet Rule, and Octet Rule?
- Valence is unpaired electrons in the outermost shell.
- Duet Rule is it can only have two electrons.
- Octet Rule is two, three or higher electron shell.
- Duet and Octet are just different electron shells.
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What is Avagadro's Number, molarity, and moles?
- Molarity is defining the consitration of a substance in a solution in terms of how many moles you have per liter of water.
- Avagadro's Number is 6.022x10 to the 23rd
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What are Covalent Bonds?
Sharing electrons.
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What are Ionic Bonds?
It gives up an electron.
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What are Hydrogen Bonds?
Weak attractions between a hydrogen atom in one molecule and a electronegitive atom in a different molecule.
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What is a Redox Reaction?
- Example:Ionic bonding resulting in sodium chloride.
- Reduction in oxidation.
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What is Reduction?
An increase in negitive charge.
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Polar Covalent vs. Nonpolar, Which one would you find in water?
- Polar Covalent is the unequeal sharing of electrons.
- Nonpolar Covalent is the equeal sharing of electrons.
- Polar would be found in water.
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H-2-o is a polar molecule with the ability to form 4 hydrogen bonds, What are some of the properties due to hydrogen bonding?
- Cohesion.
- Adhesion.
- Surface Tension.
- High specfic heat.
- High heat of vaporization.
- Density changes.
- Solvent.
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What is a Calorie?
The amount of energy requierd to raise 1gr. of water by 1 degree c.
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Why is the specific heat of water important?
- One gram of any substance by 1 degree celsius.
- Water changes tempeture slowly.
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Why does water expand as it freezes?
Hydrogen bonds become more stable.
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At what tempeture is water most dense?
4 degrees celsius.
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Acids and Bases [H+]. What these terms mean and how they affect [H+]?
- Acid increases the hydrogen ion consintration.
- Base decreases the hydrogen ion consitration.
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Know the concept of pH and how to read the pH scale?
- As you move towards 0 you increasing acidity.
- A pH of 5 has a higher [H+] or is more acidic than pH of 7.
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Define Buffer?
Keeps pH in a narrow range.
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Carbon atom is tetravalent, What is tetravalent?
It has formed 4 covalent bonds.
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What two elements do all organic compounds have?
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Define Isomer and what are the three Isomer categories?
- 1 of 2 or more chemical compounds having the same chemical formula but different structural formulas(same moleculer structure).
- Structure.
- Geometric.
- Enantiomers.
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What are Function Groups?
- Atoms or a group of atoms that basically replace one or more of these hydrogens.
- Hydrocarbons have no function group.
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Which compound is both a anmie and a carboxylic acid?
Amino acid.
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What is a Macromolecule?
They are large molecules formed by bonding together with covalently smaller molecules.
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How are the 4 biological Macromolecule formed?
- They are formed by Condinsation and dehydration.
- Polysaccharides.
- Lipids.
- Polypeptides(protiens).
- Nuclic acids(polynucleotides).
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Beable to identify monomeric unit for each polymers?
- Monosaccharides:Polysaccharides.
- Amino acids:Polypetides(proteins).
- Nucleotides:Nucleic acids(Polynucleotides).
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Would CnH2nOn aplly to disaccharides and polysaccharides?
No because your losing hydrogens and oxygens.
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What are Ribose and Deoxyribose? How are they alike or different?
- Ribose is RNA.
- Deoxyribose is DNA.
- There both pentose sugars.
- There different becuase of the one carbon.
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What is the relevance of an amino acid R-group?
It destingquishes one amino acid from another(reconigtion group).
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Amino acids are an example of which Isomer catergory?
Enamtiomers-left hand form.
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What are the 4 levels of thr protien structure?
- Primary is amino acid sequence as formed by polypetide bonding(the crbon is the end and the nitrogem is the start).
- Secondary is regular intervals og hydrogen bonding
- Tersheary is folds in on its self, becomes its functional form of the polypetide.
- Quarternary is 2 or more polypetides is the quarternary structure.
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Beable to give a simple definaition of, starch, glycogen, phospholipids, and steriods.
- Starch is plant storage.
- Glycogen is animal storage.
- Phospholipids are lipids that is in the main component of the plasma membrane.
- Steriods are lipids made up of a ring shaped molecule. Cholestrol and sex hormones are steriods.
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