A receptor potential is an all-or-none response
____________________ Indicate whether the statement is true or false.
F, a graded
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You have isolated and purified a new species of cells from the rain forest and you want to place this new species in the appropriate branch of the tree of life
You sequence the ribosomal RNA genes from these cells and discover that for one particular region of the ribosomal gene (the rRNA) the RNA sequence is AAUGAAGG. You have sequences from the same region of the ribosomal genes (the rRNA) from each of these species: bacteria, eukaryote and archaea, which are listed below. bacteria AUAGAUGG eukaryote AAAGAAGG archaea AAUGGAGU Based on these sequence results to which branch of the tree of life should you assign this new species? A) archaea B) bacteria C) eukaryote D) bacteria and archaea E) there is not enough information
If a plant is bending towards the light, one would expect which enzymes to have increased in activity?
A. auxins B. gibberellins C. wall-loosening enzymes D. ethylene E. None of these is correct
Attributes of Welwitschia mirabilis include
_____ It has only two leaves. _____ It obtains most of its water from seasonal heavy rains. _____ It lives under desert conditions. _____ It is a gnetophyte. _____ Its stems are photosynthetic, but its leaves are not.
__________ is a set of methods that allow us to reconstruct phylogeny. Fill in the blank(s) with the appropriate word(s)