MCB3023: Final Exam #4 Questions
with All Actual Answers 2026-2027
Updated.
of the production of large amounts of acid, resulting in acidosis. - Answer When the diet of a
ruminant is drastically changed from grass to a starch rich diet, the ruminant may become very
ill or die because:
of the production of large amounts of acid, resulting in acidosis.
the starch is broken down very slowly and the rumen becomes clogged.
the microbes in the rumen cannot break down starch.
they lack a source of protein.
at least one fungal heterotrophic partner and at least one phototrophic partner - Answer
Lichens contain:
at least one fungal heterotrophic partner and at least one phototrophic partner
chemolithoautotrophs
root nodules
a heterotrophic partner and at least one fungal phototrophic partner
Rhizobia - Answer The bacterial group that is responsible for root nodule formation in
legumes is:
Rhizospheres
Rhodobacter
Rhizobia
,Roseobacter
colonic fermentation - Answer Humans have a:
stomach fermentation
colonic fermentation
cecal fermentation
rumen fermentation
oxygen supply - Answer Leghemoglobin produced by plants is important for:
phosphorous assimilation
acidosis
oxygen supply
nodule formation
corals - Answer Which of these contains zooxanthellae as photosynthetic symbionts?
corals
lichen
termites
tubeworms
From nitrogen fixing bacteria in their gut. - Answer How do termites obtain nitrogen in their
diet?
, From nitrogen fixing bacteria in their gut.
From digestion of wood.
From digestion of lignin.
From digestion of cellulose.
nod - Answer These genes are important for root nodule formation:
nod
nar
nir
nif
methanogens - Answer The majority of Archaea found in the human intestinal tract are
_____ .
methanogens
sulfate-reducing bacteria
halobacteria
sulfide oxidizing bacteria
A symbiont that lives inside plant cells. - Answer What is an endophyte?
A symbiont that lives inside plant cells.
A member of the plant root rhizosphere.
with All Actual Answers 2026-2027
Updated.
of the production of large amounts of acid, resulting in acidosis. - Answer When the diet of a
ruminant is drastically changed from grass to a starch rich diet, the ruminant may become very
ill or die because:
of the production of large amounts of acid, resulting in acidosis.
the starch is broken down very slowly and the rumen becomes clogged.
the microbes in the rumen cannot break down starch.
they lack a source of protein.
at least one fungal heterotrophic partner and at least one phototrophic partner - Answer
Lichens contain:
at least one fungal heterotrophic partner and at least one phototrophic partner
chemolithoautotrophs
root nodules
a heterotrophic partner and at least one fungal phototrophic partner
Rhizobia - Answer The bacterial group that is responsible for root nodule formation in
legumes is:
Rhizospheres
Rhodobacter
Rhizobia
,Roseobacter
colonic fermentation - Answer Humans have a:
stomach fermentation
colonic fermentation
cecal fermentation
rumen fermentation
oxygen supply - Answer Leghemoglobin produced by plants is important for:
phosphorous assimilation
acidosis
oxygen supply
nodule formation
corals - Answer Which of these contains zooxanthellae as photosynthetic symbionts?
corals
lichen
termites
tubeworms
From nitrogen fixing bacteria in their gut. - Answer How do termites obtain nitrogen in their
diet?
, From nitrogen fixing bacteria in their gut.
From digestion of wood.
From digestion of lignin.
From digestion of cellulose.
nod - Answer These genes are important for root nodule formation:
nod
nar
nir
nif
methanogens - Answer The majority of Archaea found in the human intestinal tract are
_____ .
methanogens
sulfate-reducing bacteria
halobacteria
sulfide oxidizing bacteria
A symbiont that lives inside plant cells. - Answer What is an endophyte?
A symbiont that lives inside plant cells.
A member of the plant root rhizosphere.
