The downhill flow of protons through the ATP synthase complex powers the production of ATP
__________________ Indicate whether the statement is true or false.
True
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Wheat is a group of grass species. Cultivation originated in the eastern Mediterranean about 10,000 years ago; wheat is now grown on more land area than any other commercial food
If humans did not exist, what would have been the likely evolutionary trajectory of wheat? How could you test this hypothesis? A. Wheat would be a wild grass found only in its native environment. Colonize different environments and measure the establishment success of wheat. B. Wheat would have become a dominant grass on the planet regardless of the presence of humans. Plant wheat in an area and measure its growth rate. C. Wheat would have gone extinct because few species have survived over 10,000 years. Plant wheat and other grasses and watch the resulting ecosystem develop. D. Wheat would have spread beyond its original ecosystem to other hospitable environments. Examine the dispersal and colonization of other grass species with similar characteristics to wheat.
The vertebrate autonomic system
a. carries signals to and from visceral organs. b. is a functional division of the peripheral nervous system. c. includes the sympathetic and parasympathetic divisions. d. includes afferent and efferent nerve fibers. e. includes all of these descriptions.
Your professor wants you to construct a phylogenetic tree of orchids. She gives you tissue from seven orchid species and one lily. What is the most likely reason she gave you the lily?
A) to serve as an outgroup B) to see if the lily is a cryptic orchid species C) to see if the lily and the orchids show all the same shared derived characters (synapomorphies) D) to demonstrate likely homoplasies
Which type of rRNA can be found in both prokaryotes and eukaryotes?
A) 18S B) 5S C) 23S D) 5.8S E) 16S