The prokaryotic group that tends to inhabit extreme environments belongs to ________.
A) Protista
B) Archaea
C) Euglena
D) Bacteria
B) Archaea
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List four uses for conifers.
What will be an ideal response?
Which statement correctly describes archaeal cell walls?
A. Many have peptidoglycan. B. Some have an outer layer of complex polysaccharide. C. Some have an outer layer of protein. D. Some have an outer layer of complex polysaccharide and some have an outer layer of protein.
In the alveoli
A. both oxygen and carbon dioxide diffuse into the blood. B. both oxygen and carbon dioxide diffuse out of the blood. C. oxygen diffuses into the blood while carbon dioxide diffuses out of the blood. D. no exchange with the blood occurs. E. oxygen diffuses out of the blood while carbon dioxide diffuses into the blood.
The name of the enzyme that replicates DNA is ____________________. Fill in the blank(s) with the appropriate word(s)