Bio 189 Final Exam – Accurate Answers To All
Questions
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Terms in this set (100)
What are the 7 properties common Order, Sensitivity, Reproduction, Growth, Energy
to all living organisms? processing, Regulation, Evolutionary adaptation
What drives natural selection? Differential survival and reproduction of organisms
with favorable traits
What are the four major elements Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen
found in living organisms? (N)
What concepts drive the evolution of Mutation, gene flow, genetic drift, natural selection
species?
What is the difference between a Proton (+) is in nucleus, defines element; neutron
neutron and a proton? (0) is in nucleus, adds mass
What is the difference between Atomic number = # of protons; mass number = # of
atomic number and mass number? protons + neutrons
What is the difference between Mass number = whole number of nucleons; atomic
atomic weight and mass number? weight = average of isotopes
What are the types of chemical Ionic, polar covalent, nonpolar covalent, hydrogen
bonds? bonds
, What is the difference between an Isotope: same element, different neutrons;
isotope and a radioactive isotope? radioactive: unstable, decays
What is electronegativity? Measure of an atom's ability to attract electrons;
determines polar vs nonpolar bonds
How can you tell if a substance is Hydrophilic = polar, interacts with water;
hydrophilic or hydrophobic? Hydrophobic = nonpolar, repels water
What holds a single water molecule Polar covalent bonds
together?
How do water molecules interact Hydrogen bonds
with each other?
What are the four properties of water Cohesion/adhesion, high specific heat, high heat of
essential for life? vaporization, solvent properties
What is a hydronium ion? H₃O⁺, formed when H⁺ attaches to water
How are acids and bases defined? Acid: donates H⁺; Base: accepts H⁺; strong =
complete dissociation
How do buffers work? Resist pH changes by absorbing or donating H⁺
Why is carbon able to form diverse Four valence electrons → 4 covalent bonds →
organic molecules? chains, rings, branches
What is the difference between Saturated: single bonds; Unsaturated: ≥1 double
saturated, unsaturated, and bond; Polyunsaturated: ≥2 double bonds
polyunsaturated hydrocarbons?
Questions
Save
Terms in this set (100)
What are the 7 properties common Order, Sensitivity, Reproduction, Growth, Energy
to all living organisms? processing, Regulation, Evolutionary adaptation
What drives natural selection? Differential survival and reproduction of organisms
with favorable traits
What are the four major elements Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen
found in living organisms? (N)
What concepts drive the evolution of Mutation, gene flow, genetic drift, natural selection
species?
What is the difference between a Proton (+) is in nucleus, defines element; neutron
neutron and a proton? (0) is in nucleus, adds mass
What is the difference between Atomic number = # of protons; mass number = # of
atomic number and mass number? protons + neutrons
What is the difference between Mass number = whole number of nucleons; atomic
atomic weight and mass number? weight = average of isotopes
What are the types of chemical Ionic, polar covalent, nonpolar covalent, hydrogen
bonds? bonds
, What is the difference between an Isotope: same element, different neutrons;
isotope and a radioactive isotope? radioactive: unstable, decays
What is electronegativity? Measure of an atom's ability to attract electrons;
determines polar vs nonpolar bonds
How can you tell if a substance is Hydrophilic = polar, interacts with water;
hydrophilic or hydrophobic? Hydrophobic = nonpolar, repels water
What holds a single water molecule Polar covalent bonds
together?
How do water molecules interact Hydrogen bonds
with each other?
What are the four properties of water Cohesion/adhesion, high specific heat, high heat of
essential for life? vaporization, solvent properties
What is a hydronium ion? H₃O⁺, formed when H⁺ attaches to water
How are acids and bases defined? Acid: donates H⁺; Base: accepts H⁺; strong =
complete dissociation
How do buffers work? Resist pH changes by absorbing or donating H⁺
Why is carbon able to form diverse Four valence electrons → 4 covalent bonds →
organic molecules? chains, rings, branches
What is the difference between Saturated: single bonds; Unsaturated: ≥1 double
saturated, unsaturated, and bond; Polyunsaturated: ≥2 double bonds
polyunsaturated hydrocarbons?
