SAR11 bacteria are now thought to constitute about ________% of all microbial life on earth.
A. 75
B. 10
C. 5
D. 25
Answer: D
Biology & Microbiology
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A. the respiratory route. B. blood transfusion. C. body fluids. D. the fecal-oral route.
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Perception of salty tastes occurs at the level of the taste bud.
Answer the following statement true (T) or false (F)
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Archaea have histone proteins that are homologous to the histone proteins found in eukaryotes. Thus far, available evidence indicates that archaeal histone proteins play a role in which function?
What will be an ideal response?
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What chemical causes death in many eukaryotes because it blocks Cytochrome c oxidase?
A. cyanide B. copper C. carbon monoxide D. oxygen E. iron
Biology & Microbiology