BIO 101 Exam Fully Tested And Verified
what are the 5 themes of biology?
organization, information, energy and matter, interactions, evolution
organization
the biological organization of the levels of life
information
Chromosomes contain genetic material called DNA
energy and mat...
bio 101 exam fully tested and verified what are th
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BIO 101 Exam Fully Tested And Verified
what are the 5 themes of biology?
organization, information, energy and matter, interactions, evolution
organization
the biological organization of the levels of life
information
Chromosomes contain genetic material called DNA
energy and matter
In an ecosystem energy and matter are transferred from one organism to another
interactions
All the living and nonliving relationships that exist with an ecosystem
evolution
The one idea that makes sense of everything we know about living organisms
non polar covalent bond
A covalent bond in which electrons are shared equally
polar covalent bond
A covalent bond in which electrons are not shared equally
ionic bond
Formed when one or more electrons are transferred from one atom to another
hydrogen bonds
Very weak bonds; occurs when a hydrogen atom in one molecule is attracted to the electrostatic
atom in another molecule
emergent properties of water
cohesion to water molecules, ability to moderate temperature, expansion upon freezing, versatility as
a solvent
Van der Waals forces
a slight attraction that develops between the oppositely charged regions of nearby molecules
adhesion
An attraction between molecules of different substances
cohesion
, Attraction between molecules of the same substance
How does water moderate temperature
Water absorbs heat from warmer air and releases stored heat to cooler air
Evaporation
The change of a substance from a liquid to a gas
heat of vaporization
The amount of energy required for the liquid at its boiling point to become a gas
What is expansion upon freezing
Ice floats because the hydrogen bonds are more ordered making ice less dense
solution
A homogeneous mixture of two or more substances
solvent
A liquid substance capable of dissolving other substances
solute
A substance that is dissolved in a solution.
aqueous solution
a solution in which water is the solvent
acid
any substance that increases the H+ concentration of a solution
base
A substance that decreases the H+ concentration in a solution.
pH>7
base
pH<7
acid
pH=7
neutral
buffer
compound that prevents sharp, sudden changes in pH
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