Welcome to the Quiz!
This quiz contains 12 questions from a mix of 1 subtopics.
What is the purpose of aerenchyma tissue in rice plants?
to generate more ATP through aerobic respiration
to convert lactic acid to pyruvate
to facilitate the transport of oxygen throughout submerged plant parts
to store ethanol produced during fermentation
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Which of the following is true about ethanol produced during alcohol fermentation in rice plants?
it is broken down by ethanol dehydrogenase
it is toxic and cannot be tolerated by the plants
it is converted to lactic acid
it is used to generate more ATP
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Which of the following is NOT an adaptation of rice plants to grow in flooded fields?
stems elongate as water levels rise
aerenchyma tissue forms to facilitate oxygen transport
alcoholic fermentation allows ATP generation with limited oxygen
lactic acid fermentation allows ATP generation with no oxygen
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What does NOT happen during alcohol fermentation?
NAD is regenerated
pyruvate is converted into lactic acid
ethanol and CO2 are produced
ethanal is reduced and accepts a hydrogen from reduced NAD
pyruvate is decarboxylated and converted into ethanal
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In which organisms does lactic acid fermentation occur?
(Select all that apply)
animals
yeasts
plants
all of the above
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What does NOT happen during lactic acid fermentation?
lactic acid is reduced to form glucose
lactic acid is formed, and NAD is regenerated
lactic acid may be stored as glycogen
lactic acid can be oxidised back to pyruvate
pyruvate accepts a hydrogen from reduced NAD, catalysed by lactate dehydrogenase
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What happens to lactic acid produced during lactic acid fermentation in mammals?
(Select all that apply)
it is removed as a waste product
it is stored as glycogen
it is oxidised back to pyruvate to generate more ATP
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Which of the following is true about anaerobic respiration?
it requires oxygen
it occurs only in the mitochondria
it acts as an emergency measure for ATP production when oxygen levels are low
it yields more ATP than aerobic respiration
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Which of the following are difference(s) between aerobic and anaerobic respiration?
(Select all that apply)
anaerobic respiration occurs only in the cytoplasm
aerobic respiration yields less ATP per glucose molecule
aerobic respiration includes the link reaction, Krebs cycle, and oxidative phosphorylation
anaerobic respiration requires oxygen
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In which organisms can alcohol fermentation occur?
(Select all that apply)
animals
yeasts
plants
all of the above
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Why can't oxidative phosphorylation and the Krebs cycle continue in anaerobic conditions?
the mitochondria are not functioning properly
there is not enough glucose available
the enzymes required for these processes are not present
all the FAD and NAD will be reduced and cannot accept protons and electrons
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What is the approximate yield of ATP per glucose molecule in anaerobic respiration?
32 ATP
16 ATP
4 ATP
2 ATP
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