BIO 102 Module 1 Complete Exam
Study Questions with Expert Graded
A+ Answers | Brand New Version
1. Which of the following domains consists of all the organisms whose cells
have true nuclei?
Archaea
Eukarya
Animalia
Bacteria - ANSWER The domain Eukarya consists of all the organisms with
cells containing true nuclei, including many groups of single-celled organisms,
plants, fungi, and animals.
2. According to the hypothesis of serial endosymbiosis, which of the following
was a key initial step in the origin of mitochondria? - ANSWER A
prokaryotic host cell engulfed an aerobic, heterotrophic bacterium.
3. sympatric speciation - ANSWER The formation of new species in
populations that live in the same geographic area
4. allopatric speciation - ANSWER The formation of new species in
populations that are geographically isolated from one another.
5. Hybridization - ANSWER The breeding technique that involves crossing
dissimilar individuals to bring together the best traits of both organisms
,6. Reinforcement - ANSWER any event that strengthens the behavior it
follows
7. Microevolution vs. Macroevolution - ANSWER Microevolution happens on
a small scale (within a single population), while macroevolution happens on
a scale that transcends the boundaries of a single species. Despite their
differences, evolution at both of these levels relies on the same, established
mechanisms of evolutionary change: mutation.
8. Speciation - ANSWER the formation of new and distinct species in the
course of evolution.
9. biological species concept - ANSWER Definition of a species as a group of
populations whose members have the potential to interbreed in nature and
produce viable, fertile offspring, but do not produce viable, fertile offspring
with members of other such groups.
10.____________ between populations holds a species together genetically. -
ANSWER Gene flow
11.habitat isolation - ANSWER populations live in different habitats and do
not meet
12.temporal isolation - ANSWER When two species breed at different times of
day, seasons, or years.
13.behavioral isolation - ANSWER isolation between populations due to
differences in courtship or mating behavior
, 14.mechanical isolation (prezygotic) - ANSWER mating is attempted, but
morphological differences prevent its successful completion
15.gametic isolation - ANSWER A prezygotic reproductive barrier where the
sperm of one species may not be able to fertilize the eggs of another species
16.reduced hybrid viability - ANSWER When the genes of different species
interact and impair hybrid development.
17.reduced hybrid fertility - ANSWER Even if hybrids are vigorous, they may
be sterile
18.hybrid breakdown (postzygotic) - ANSWER the first-generation hybrids are
viable and fertile, but when these hybrids mate with one another or with
either parent species, the offspring are feeble or sterile
19.Taxon - ANSWER any particular group within a taxonomic system
20.A diploid (2n) cell divides by meiosis, producing four daughter cells. Next,
each daughter cell divides by mitosis, producing a total of eight
granddaughter cells. Which of the following statements about the
granddaughter cells is true? - ANSWER Each granddaughter cell is haploid
(n)
21.Lyell's principle of uniformitarianism __________. (Concept 22.1) (Chapter
22) - ANSWER strongly influenced Darwin's view of how living organisms
could change over time
22.Which increases genetic variation?
Study Questions with Expert Graded
A+ Answers | Brand New Version
1. Which of the following domains consists of all the organisms whose cells
have true nuclei?
Archaea
Eukarya
Animalia
Bacteria - ANSWER The domain Eukarya consists of all the organisms with
cells containing true nuclei, including many groups of single-celled organisms,
plants, fungi, and animals.
2. According to the hypothesis of serial endosymbiosis, which of the following
was a key initial step in the origin of mitochondria? - ANSWER A
prokaryotic host cell engulfed an aerobic, heterotrophic bacterium.
3. sympatric speciation - ANSWER The formation of new species in
populations that live in the same geographic area
4. allopatric speciation - ANSWER The formation of new species in
populations that are geographically isolated from one another.
5. Hybridization - ANSWER The breeding technique that involves crossing
dissimilar individuals to bring together the best traits of both organisms
,6. Reinforcement - ANSWER any event that strengthens the behavior it
follows
7. Microevolution vs. Macroevolution - ANSWER Microevolution happens on
a small scale (within a single population), while macroevolution happens on
a scale that transcends the boundaries of a single species. Despite their
differences, evolution at both of these levels relies on the same, established
mechanisms of evolutionary change: mutation.
8. Speciation - ANSWER the formation of new and distinct species in the
course of evolution.
9. biological species concept - ANSWER Definition of a species as a group of
populations whose members have the potential to interbreed in nature and
produce viable, fertile offspring, but do not produce viable, fertile offspring
with members of other such groups.
10.____________ between populations holds a species together genetically. -
ANSWER Gene flow
11.habitat isolation - ANSWER populations live in different habitats and do
not meet
12.temporal isolation - ANSWER When two species breed at different times of
day, seasons, or years.
13.behavioral isolation - ANSWER isolation between populations due to
differences in courtship or mating behavior
, 14.mechanical isolation (prezygotic) - ANSWER mating is attempted, but
morphological differences prevent its successful completion
15.gametic isolation - ANSWER A prezygotic reproductive barrier where the
sperm of one species may not be able to fertilize the eggs of another species
16.reduced hybrid viability - ANSWER When the genes of different species
interact and impair hybrid development.
17.reduced hybrid fertility - ANSWER Even if hybrids are vigorous, they may
be sterile
18.hybrid breakdown (postzygotic) - ANSWER the first-generation hybrids are
viable and fertile, but when these hybrids mate with one another or with
either parent species, the offspring are feeble or sterile
19.Taxon - ANSWER any particular group within a taxonomic system
20.A diploid (2n) cell divides by meiosis, producing four daughter cells. Next,
each daughter cell divides by mitosis, producing a total of eight
granddaughter cells. Which of the following statements about the
granddaughter cells is true? - ANSWER Each granddaughter cell is haploid
(n)
21.Lyell's principle of uniformitarianism __________. (Concept 22.1) (Chapter
22) - ANSWER strongly influenced Darwin's view of how living organisms
could change over time
22.Which increases genetic variation?
