2024 BIO 1108 FINAL EXAM
AND LECTURE QUESTIONS
WITH CORRECT ANSWERS
Which one of the following is a selective advantage of simple multicellularity
over single-celled
organisms? - CORRECT ANSWERS-Multicellularity helps organisms avoid
predation.
Which one of the following organisms has coenocytic organization? -
CORRECT ANSWERS-some green algae
In terms of the evolution of photosynthesis, which process happened first? -
CORRECT ANSWERS-horizontal gene transfer
What is the most abundant protein on Earth - CORRECT ANSWERS-Rubisco
What is the initial carbon input in the Calvin cycle? - CORRECT ANSWERS-
CO2
Why do mitochondria and chloroplasts have small genome? - CORRECT
ANSWERS-They have small genomes because over time, much of their
nucleic acid has migrated to the host cell
nucleus.
Some slime molds make structures called plasmodia which: - CORRECT
ANSWERS-contain many nuclei in one large cell.
Chloroplasts have outer and an inner membranes that separate the stroma
and thylakoids from the
cytoplasm. What is believed to be the origin of the outer membrane of the
chloroplast? - CORRECT ANSWERS-It is the remnant of the ancient host cell's
plasma membrane following endocytosis of the
cyanobacteria.
The peppered moth provides a well-known example of natural selection. The
lightcolored
, form of the moth was predominant in England before the industrial
revolution. In
the mid-nineteenth century, a dark-colored form appeared. The difference is
produced by
a dominant allele of one gene. By about 1900, approximately 90% of the
moths around
industrial areas were dark colored, whereas light-colored moths were still
abundant
elsewhere. Apparently, birds could readily find the light moths against the
soot-darkened
background in industrial areas and therefore were eating more light moths.
Recently, use
of cleaner fuels has greatly reduced soot in the landscape, and the dark-
colored moths
have been disappearing. Should the two forms of moths be considered
separate species? - CORRECT ANSWERS-No
Three populations of crickets look very similar, but the males have courtship
songs that
sound different. What function would this difference in song likely serve if the
populations came in contact? - CORRECT ANSWERS-a prezygotic isolating
mechanism
How are two different species most likely to evolve from one ancestral
species? - CORRECT ANSWERS-allopatrically, after the ancestral species has
split into two populations
polytomy is a graphical depiction of what type of relationship between
groups? - CORRECT ANSWERS-The common ancestor node with no resolution
among descendant groups.
One reason we see relatively little genetic variation among human regional
populations
is that: - CORRECT ANSWERS-humans migrated out of Africa so recently that
we haven't had enough time
for regional variation to accumulate
The term "n" refers to the size of a population, that is, the number
of individuals in that population. In general, in a sample of n
individuals, the frequency of an allele is - CORRECT ANSWERS-he number of
occurrences of the allele divided by twice the
number of individuals in the sample (2n).
If a population is not in Hardy-Weinberg equilibrium, we can
conclude that: - CORRECT ANSWERS-evolution has occurred because one of
the assumptions of the
AND LECTURE QUESTIONS
WITH CORRECT ANSWERS
Which one of the following is a selective advantage of simple multicellularity
over single-celled
organisms? - CORRECT ANSWERS-Multicellularity helps organisms avoid
predation.
Which one of the following organisms has coenocytic organization? -
CORRECT ANSWERS-some green algae
In terms of the evolution of photosynthesis, which process happened first? -
CORRECT ANSWERS-horizontal gene transfer
What is the most abundant protein on Earth - CORRECT ANSWERS-Rubisco
What is the initial carbon input in the Calvin cycle? - CORRECT ANSWERS-
CO2
Why do mitochondria and chloroplasts have small genome? - CORRECT
ANSWERS-They have small genomes because over time, much of their
nucleic acid has migrated to the host cell
nucleus.
Some slime molds make structures called plasmodia which: - CORRECT
ANSWERS-contain many nuclei in one large cell.
Chloroplasts have outer and an inner membranes that separate the stroma
and thylakoids from the
cytoplasm. What is believed to be the origin of the outer membrane of the
chloroplast? - CORRECT ANSWERS-It is the remnant of the ancient host cell's
plasma membrane following endocytosis of the
cyanobacteria.
The peppered moth provides a well-known example of natural selection. The
lightcolored
, form of the moth was predominant in England before the industrial
revolution. In
the mid-nineteenth century, a dark-colored form appeared. The difference is
produced by
a dominant allele of one gene. By about 1900, approximately 90% of the
moths around
industrial areas were dark colored, whereas light-colored moths were still
abundant
elsewhere. Apparently, birds could readily find the light moths against the
soot-darkened
background in industrial areas and therefore were eating more light moths.
Recently, use
of cleaner fuels has greatly reduced soot in the landscape, and the dark-
colored moths
have been disappearing. Should the two forms of moths be considered
separate species? - CORRECT ANSWERS-No
Three populations of crickets look very similar, but the males have courtship
songs that
sound different. What function would this difference in song likely serve if the
populations came in contact? - CORRECT ANSWERS-a prezygotic isolating
mechanism
How are two different species most likely to evolve from one ancestral
species? - CORRECT ANSWERS-allopatrically, after the ancestral species has
split into two populations
polytomy is a graphical depiction of what type of relationship between
groups? - CORRECT ANSWERS-The common ancestor node with no resolution
among descendant groups.
One reason we see relatively little genetic variation among human regional
populations
is that: - CORRECT ANSWERS-humans migrated out of Africa so recently that
we haven't had enough time
for regional variation to accumulate
The term "n" refers to the size of a population, that is, the number
of individuals in that population. In general, in a sample of n
individuals, the frequency of an allele is - CORRECT ANSWERS-he number of
occurrences of the allele divided by twice the
number of individuals in the sample (2n).
If a population is not in Hardy-Weinberg equilibrium, we can
conclude that: - CORRECT ANSWERS-evolution has occurred because one of
the assumptions of the
