MCB 3023 EXAM 4 QUESTIONS WITH VERIFIED ANSWERS
How do termites obtain nitrogen in their diet?
From nitrogen fixing bacteria in their gut.
From digestion of lignin.
From digestion of cellulose.
From digestion of wood. - Answers - From nitrogen fixing bacteria in their gut.
Leghemoglobin produced by plants is important for:
oxygen supply
nodule formation
phosphorous assimilation
acidosis - Answers - oxygen supply
Most primary endosymbionts of insects have all these in common, EXCEPT:
are required for survival or fertility
nitrogen fixation genes
highly reduced genomes
maternal transmission - Answers - nitrogen fixation genes
What are Zooxanthellae?
Symbionts of tubeworms at hydrothermal vents
Symbionts of ruminants
Heterotrophic symbionts of corals
Photosynthetic symbionts of corals - Answers - Photosynthetic symbionts of corals
Lichens contain:
chemolithoautotrophs
a heterotrophic partner and at least one fungal phototrophic partner
at least one fungal heterotrophic partner and at least one phototrophic partner
root nodules - Answers - at least one fungal heterotrophic partner and at least one
phototrophic partner
Herbivores mostly require microorganisms to help them with the digestion of this
compound.
proteins
glycogen
cellulose
starch - Answers - cellulose
, Humans have a:
rumen fermentation
colonic fermentation
cecal fermentation
stomach fermentation - Answers - colonic fermentation
Which of these contains zooxanthellae as photosynthetic symbionts?
tubeworms
termites
corals
lichen - Answers - corals
Which genes are encoding for subunits of nitrogenase, the main enzyme for nitrogen
fixation?
leghemoglobin genes
nif genes
nod genes
fix genes - Answers - nif genes
The majority of Archaea found in the human intestinal tract are _____ .
sulfate-reducing bacteria
sulfide oxidizing bacteria
methanogens
halobacteria - Answers - methanogens
The bacterial group that is responsible for root nodule formation in legumes is:
Rhizobia
Rhizospheres
Roseobacter
Rhodobacter - Answers - Rhizobia
What is the human microbiome composed of?
Only microbes that live in the intestinal tract of humans.
Only microbes that contribute to the health of humans.
Only microbes that live on human skin.
All microbes that live on or within the human body. - Answers - All microbes that live on
or within the human body.
How do termites obtain nitrogen in their diet?
From nitrogen fixing bacteria in their gut.
From digestion of lignin.
From digestion of cellulose.
From digestion of wood. - Answers - From nitrogen fixing bacteria in their gut.
Leghemoglobin produced by plants is important for:
oxygen supply
nodule formation
phosphorous assimilation
acidosis - Answers - oxygen supply
Most primary endosymbionts of insects have all these in common, EXCEPT:
are required for survival or fertility
nitrogen fixation genes
highly reduced genomes
maternal transmission - Answers - nitrogen fixation genes
What are Zooxanthellae?
Symbionts of tubeworms at hydrothermal vents
Symbionts of ruminants
Heterotrophic symbionts of corals
Photosynthetic symbionts of corals - Answers - Photosynthetic symbionts of corals
Lichens contain:
chemolithoautotrophs
a heterotrophic partner and at least one fungal phototrophic partner
at least one fungal heterotrophic partner and at least one phototrophic partner
root nodules - Answers - at least one fungal heterotrophic partner and at least one
phototrophic partner
Herbivores mostly require microorganisms to help them with the digestion of this
compound.
proteins
glycogen
cellulose
starch - Answers - cellulose
, Humans have a:
rumen fermentation
colonic fermentation
cecal fermentation
stomach fermentation - Answers - colonic fermentation
Which of these contains zooxanthellae as photosynthetic symbionts?
tubeworms
termites
corals
lichen - Answers - corals
Which genes are encoding for subunits of nitrogenase, the main enzyme for nitrogen
fixation?
leghemoglobin genes
nif genes
nod genes
fix genes - Answers - nif genes
The majority of Archaea found in the human intestinal tract are _____ .
sulfate-reducing bacteria
sulfide oxidizing bacteria
methanogens
halobacteria - Answers - methanogens
The bacterial group that is responsible for root nodule formation in legumes is:
Rhizobia
Rhizospheres
Roseobacter
Rhodobacter - Answers - Rhizobia
What is the human microbiome composed of?
Only microbes that live in the intestinal tract of humans.
Only microbes that contribute to the health of humans.
Only microbes that live on human skin.
All microbes that live on or within the human body. - Answers - All microbes that live on
or within the human body.
