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BIO 1500 MIZZOU SCHUL TEST 4 (ACTUAL
2025/2026) QUESTIONS WITH VERIFIED ANSWERS
residual lung volume - (answers)amount of air left in the lungs after exhaling
Explain why residual lung volume exists - (answers)keep the alveoli open even
after maximum expiration which allows for continual gas exchange to occur
between breaths.
Explain how the circular processes of photosynthesis and cellular respiration
result in the cycling of carbon within ecosystems. - (answers)CR produces CO2 and
water which PS uses to make O2 and glucose which CR uses
Explain the two reasons for an imbalance in this cycle that led to the increased O2
during the Carboniferous. - (answers)1. Increase in photosynthesis
2. Burial of carbon- removed from the cycle
Describe the hypothesized reasons for the decline in O2 during the late Permian -
(answers)Land masses form super-continent which led to a dryer climate and a
reduction in photosynthesis which led to the reduced burial of carbon and then
O2 dropped as more carbon entered cellular respiration
Explain the importance of Lignin on the rise and fall of O2 levels during the
Carboniferous - (answers)Lignin allows coal formation and allows excess O2 to
stay in the atmosphere
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Explain the importance of Lignin Decomposition on the rise and fall of O2 levels
during the Carboniferous - (answers)Lignin Decop did not allow coal formation
and did not allow excess O2 to stay in the atmosphere which increased PS
Recall the general function that gradients have in cells. - (answers)storage
Explain how gradients are used in cells using the example of ATP Synthase -
(answers)stores H+ and pushed inward which provides energy for ATP synthase
Molecular level of biological organization - (answers)involving structure/behavior
of molecules
Cellular level of biological organization - (answers)processes performed by cells
Organismal level of biological organization - (answers)physiology of plants,
animals, ... - how do they work
Ecological level of biological organization - (answers)interactions between
organisms and environment
Evolutionary level of biological organization - (answers)topics related to change
over time
Recall the elevation of Mt. Everest - (answers)8848 meters
BIO 1500 MIZZOU SCHUL TEST 4 (ACTUAL
2025/2026) QUESTIONS WITH VERIFIED ANSWERS
residual lung volume - (answers)amount of air left in the lungs after exhaling
Explain why residual lung volume exists - (answers)keep the alveoli open even
after maximum expiration which allows for continual gas exchange to occur
between breaths.
Explain how the circular processes of photosynthesis and cellular respiration
result in the cycling of carbon within ecosystems. - (answers)CR produces CO2 and
water which PS uses to make O2 and glucose which CR uses
Explain the two reasons for an imbalance in this cycle that led to the increased O2
during the Carboniferous. - (answers)1. Increase in photosynthesis
2. Burial of carbon- removed from the cycle
Describe the hypothesized reasons for the decline in O2 during the late Permian -
(answers)Land masses form super-continent which led to a dryer climate and a
reduction in photosynthesis which led to the reduced burial of carbon and then
O2 dropped as more carbon entered cellular respiration
Explain the importance of Lignin on the rise and fall of O2 levels during the
Carboniferous - (answers)Lignin allows coal formation and allows excess O2 to
stay in the atmosphere
, 2|Page
Explain the importance of Lignin Decomposition on the rise and fall of O2 levels
during the Carboniferous - (answers)Lignin Decop did not allow coal formation
and did not allow excess O2 to stay in the atmosphere which increased PS
Recall the general function that gradients have in cells. - (answers)storage
Explain how gradients are used in cells using the example of ATP Synthase -
(answers)stores H+ and pushed inward which provides energy for ATP synthase
Molecular level of biological organization - (answers)involving structure/behavior
of molecules
Cellular level of biological organization - (answers)processes performed by cells
Organismal level of biological organization - (answers)physiology of plants,
animals, ... - how do they work
Ecological level of biological organization - (answers)interactions between
organisms and environment
Evolutionary level of biological organization - (answers)topics related to change
over time
Recall the elevation of Mt. Everest - (answers)8848 meters
