Which part of an endophyte penetrates inside of a plant?
A. the fruiting body
B. the spore
C. the mycelium
D. the exoenzyme
E. the hyphae
E. the hyphae
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Unique features of the planctomycetes include ________.
A. a membrane-bound nuclear region B. resistance to ionizing radiation C. their size: some are as large as protozoa D. twitching fimbriae that are required for motility
The relatively large number of new mutations that occur in the human genome each generation is tolerable because:
A. we have excellent DNA repair mechanisms. B. most of the mutations occur in somatic cells, not germ cells. C. most of our genome is non-coding DNA, so few mutations affect our proteins. D. we have excellent protein repair mechanisms. E. compared to other organisms, changes in our proteins have relatively little affect on our cells' structure and function.
Are all of the sugar subunits the same?
a. yes b. no
What percentage of carbon emissions remain in the atmosphere?
A) 5 percent B) 15 percent C) 50 percent D) 90 percent