Despite viruses require a living host's metabolism to replicate, it remains unclear whether viruses existed before living cells
Indicate whether the statement is true or false.
Answer: TRUE
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Five species of ants can be found on aspen sunflowers (Helianthella quinquenervis), which live in wet mountain meadows of the Rocky Mountains. The aspen sunflowers provide nectar to the ants in special structures called extrafloral nectaries
The ants, in turn, protect the sunflowers from other insects. The ants, however, are not found solely on the sunflowers—they can be found tending aphids on other flower species and collecting nectar from other species as well. This, then, is an example of a(n): A. obligate mutualism B. obligate antagonism C. facultative mutualism D. facultative antagonism E. none of the answer options are correct.
The structures labeled "5" are
a. trichocysts. b. micronuclei. c. flagella. d. pili. e. gullet.
What is the main function of the ozone layer?
a. to provide cloud cover for protection of polar regions b. to provide a source of oxygen for photosynthesis c. to filter toxins from acid rain d. to block most of the sun's damaging rays from reaching Earth e. to trap carbon dioxide and warm the planet
The abbreviation DNA stands for ________
Fill in the blank(s) with correct word