BIO 1500 EXAM #4 QUESTIONS WITH
COMPLETE SOLUTIONS
the amino acid sequence of the protein - ANSWER-Keratin is a protein produced in
skin cells. Insulin is a protein produced in the pancreas. These two proteins have
different shapes. The different shapes are most strongly influenced by:
A. the number of peptide bonds in the protein
B. the type of cell that produced the protein
C. the amino acid sequence of the protein
D. how many R groups are on each amino acid
that they migrate at such high altitudes - ANSWER-Compared with other species of
birds, what is remarkable about the migration of the bar headed geese?
A. that they migrate in such cold temperatures
B. that they migrate such long distances
C. that they remember their migration path from generation to generation
D. that they migrate where there is so little to eat
E. that they migrate at such high altitudes
it doesn't pick up O2 very easily, and it lets go of it easily. - ANSWER-When a
molecule of hemoglobin has low affinity, it means that:
A. it doesn't pick up O2 very easily, and it lets go of it easily.
B. it doesn't pick up O2 very easily, and it holds on to it tightly.
C. it picks up O2 easily, and it also lets go of the O2
D. it picks up O2 easily, and it holds on to the O2
There was an increase in the rate of photosynthesis relative to the rate of cellular
respiration. - ANSWER-Why did O2 concentrations in the atmosphere increase so
dramatically during the Carboniferous?
A. The widespread bogs released bubbles of O2 into the atmosphere.
B. Cellular respiration hadn't evolved yet.
C. Giant insects and salamanders couldn't decompose when they died.
D. There was an increase in the rate of photosynthesis relative to the rate of cellular
respiration.
E. Large quantities of O2 were released by fungi as they broke down lignin.
CO2 level increases and O2 level decreases - ANSWER-Imagine that erosion
begins to uncover large beds of coal that formed during the late Carboniferous (350
mya). These coal beds had been buried deep enough that they were not accessible
to microorganisms. After erosion uncovers the coal, bacteria that have evolved over
the last 100 million years can access the coal and break down its organic
compounds to gain energy. Predict how this breakdown of coal will affect CO2 and
O2 levels in the atmosphere.
A. CO2 and O2 levels both decrease
B. CO2 and O2 levels both increase
C. CO2 level increases and O2 levels will not be affected
D. CO2 level decreases and O2 level increases
E. CO2 level increases and O2 level decreases
COMPLETE SOLUTIONS
the amino acid sequence of the protein - ANSWER-Keratin is a protein produced in
skin cells. Insulin is a protein produced in the pancreas. These two proteins have
different shapes. The different shapes are most strongly influenced by:
A. the number of peptide bonds in the protein
B. the type of cell that produced the protein
C. the amino acid sequence of the protein
D. how many R groups are on each amino acid
that they migrate at such high altitudes - ANSWER-Compared with other species of
birds, what is remarkable about the migration of the bar headed geese?
A. that they migrate in such cold temperatures
B. that they migrate such long distances
C. that they remember their migration path from generation to generation
D. that they migrate where there is so little to eat
E. that they migrate at such high altitudes
it doesn't pick up O2 very easily, and it lets go of it easily. - ANSWER-When a
molecule of hemoglobin has low affinity, it means that:
A. it doesn't pick up O2 very easily, and it lets go of it easily.
B. it doesn't pick up O2 very easily, and it holds on to it tightly.
C. it picks up O2 easily, and it also lets go of the O2
D. it picks up O2 easily, and it holds on to the O2
There was an increase in the rate of photosynthesis relative to the rate of cellular
respiration. - ANSWER-Why did O2 concentrations in the atmosphere increase so
dramatically during the Carboniferous?
A. The widespread bogs released bubbles of O2 into the atmosphere.
B. Cellular respiration hadn't evolved yet.
C. Giant insects and salamanders couldn't decompose when they died.
D. There was an increase in the rate of photosynthesis relative to the rate of cellular
respiration.
E. Large quantities of O2 were released by fungi as they broke down lignin.
CO2 level increases and O2 level decreases - ANSWER-Imagine that erosion
begins to uncover large beds of coal that formed during the late Carboniferous (350
mya). These coal beds had been buried deep enough that they were not accessible
to microorganisms. After erosion uncovers the coal, bacteria that have evolved over
the last 100 million years can access the coal and break down its organic
compounds to gain energy. Predict how this breakdown of coal will affect CO2 and
O2 levels in the atmosphere.
A. CO2 and O2 levels both decrease
B. CO2 and O2 levels both increase
C. CO2 level increases and O2 levels will not be affected
D. CO2 level decreases and O2 level increases
E. CO2 level increases and O2 level decreases
