CAMPBELL BIOLOGY FINAL EXAM WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
pathogen - ANSWERS-disease-causing agent
vaccine - ANSWERS-a preparation of weakened or killed
pathogens
antibiotic - ANSWERS-compound that blocks the growth and
reproduction of bacteria
virus - ANSWERS-a particle made up of nucleic acid, protein,
and in some cases lipids that can replicate only by infecting
living cells
capsid - ANSWERS-outer protein coat of a virus
,bacteriophage - ANSWERS-virus that infects bacteria
lytic infection - ANSWERS-process in which a virus enters a
cell, makes a copy of itself, and causes the cell to burst
lysogenic infection - ANSWERS-process by which a virus
embeds its DNA into the DNA of the host cell and is
replicated along with the host cell's DNA
prophage - ANSWERS-the viral DNA that is embedded in the
host cell's DNA
retrovirus - ANSWERS-virus that contains RNA as its genetic
information
gene pool - ANSWERS-combined genetic information of all
the members of a particular population
relative frequency - ANSWERS-number of times an allele
occurs in a gene pool compared with the number of times
other alleles occur
, single-gene trait - ANSWERS-trait controlled by a single gene
that has two alleles
polygenic trait - ANSWERS-trait controlled by two or more
genes
directional selection - ANSWERS-form of natural selection in
which the entire curve moves; occurs when individuals at
one end of a distribution curve have higher fitness than
individuals in the middle or at the other end of the curve
stabilizing selection - ANSWERS-form of natural selection by
which the center of the curve remains in its current
position; occurs when individuals near the center of a
distribution curve have higher fitness than individuals at
either end
disruptive selection - ANSWERS-form of natural selection in
which a single curve splits into two; occurs when individuals
at the upper and lower ends of a distribution curve have
higher fitness than individuals near the middle
genetic drift - ANSWERS-random change in allele
frequencies that occurs in small populations
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
pathogen - ANSWERS-disease-causing agent
vaccine - ANSWERS-a preparation of weakened or killed
pathogens
antibiotic - ANSWERS-compound that blocks the growth and
reproduction of bacteria
virus - ANSWERS-a particle made up of nucleic acid, protein,
and in some cases lipids that can replicate only by infecting
living cells
capsid - ANSWERS-outer protein coat of a virus
,bacteriophage - ANSWERS-virus that infects bacteria
lytic infection - ANSWERS-process in which a virus enters a
cell, makes a copy of itself, and causes the cell to burst
lysogenic infection - ANSWERS-process by which a virus
embeds its DNA into the DNA of the host cell and is
replicated along with the host cell's DNA
prophage - ANSWERS-the viral DNA that is embedded in the
host cell's DNA
retrovirus - ANSWERS-virus that contains RNA as its genetic
information
gene pool - ANSWERS-combined genetic information of all
the members of a particular population
relative frequency - ANSWERS-number of times an allele
occurs in a gene pool compared with the number of times
other alleles occur
, single-gene trait - ANSWERS-trait controlled by a single gene
that has two alleles
polygenic trait - ANSWERS-trait controlled by two or more
genes
directional selection - ANSWERS-form of natural selection in
which the entire curve moves; occurs when individuals at
one end of a distribution curve have higher fitness than
individuals in the middle or at the other end of the curve
stabilizing selection - ANSWERS-form of natural selection by
which the center of the curve remains in its current
position; occurs when individuals near the center of a
distribution curve have higher fitness than individuals at
either end
disruptive selection - ANSWERS-form of natural selection in
which a single curve splits into two; occurs when individuals
at the upper and lower ends of a distribution curve have
higher fitness than individuals near the middle
genetic drift - ANSWERS-random change in allele
frequencies that occurs in small populations
