EXAM Q&A STUDY GUIDE COMPLETE
SOLUTION
◉Gene expression. Answer: The process by which information in a
gene directs the manufacture of a cellular product.
◉Genome. Answer: "library" of genetic instructions that an
organism inherits
◉Producers. Answer: Organisms that produce their own food
◉Consumers. Answer: An organism that obtains energy and
nutrients by feeding on other organisms or their remains.
◉Feedback Regulation. Answer: the output or product of a process
regulates that very process
◉Hydrogen bond. Answer: a weak bond between two molecules
resulting from an electrostatic attraction between a proton in one
molecule and an electronegative atom in the other
,◉polar molecule. Answer: molecule with an unequal distribution of
charge, resulting in the molecule having a positive end and a
negative end
◉cohesion. Answer: Attraction between molecules of the same
substance
◉adhesion. Answer: attraction between molecules of different
substances
◉surface tension. Answer: A measure of how difficult it is to stretch
or break the surface of a liquid
◉thermal energy. Answer: the energy associated with the random
movement of atoms or molecules
◉temperature. Answer: the average kinetic energy of particles in a
substance
◉calorie. Answer: Amount of energy needed to raise temperature 1
gram of water 1 degree C
◉joule. Answer: SI unit of energy
, ◉Specific heat. Answer: the amount of heat that must be absorbed
or lost for 1g of that substance to change its temperature by 1 C
◉heat of vaporization. Answer: the quantity of heat a liquid must
absorb for 1g of it to be converted from the liquid to the gaseous
state
◉hydration shell. Answer: the sphere of water molecules around
each dissolved ion in an aqueous solution
◉hydrophilic. Answer: Having an affinity for water.
◉hydrophobic. Answer: Having an aversion to water; tending to
coalesce and form droplets in water.
◉molarity. Answer: the number of moles of solute per liter of
solution
◉Miller-Urey Experiment. Answer: 1953 experiment in which it was
attempted to reproduce the condition of the (assumed) earth's
primitive ocean's under a reducing atmosphere. Some of the key
molecules to life (amino acids and nucleotides) were produced.