Why is phylogenetic inference a difficult and computationally intensive problem? What solution do evolutionary biologists use to address this problem?
What will be an ideal response?
ANS:
Will vary, but should mention: There are simply too many possible phylogenetic trees to search even with the fastest of computers. Researchers must devise clever ways to search within the ‘space' of possible trees.
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Illustrate the reaction center of a purple bacterium with the following features highlighted: antenna pigments, the special pair, protein H, protein L, protein M, quinone pool, and ATPase
Also explain the importance of proximity for these components within a reaction center. What will be an ideal response?
What powers the ATP synthase enzyme in the light-dependent reactions of photosynthesis?
a. energy from ATP b. energy from NADPH c. energy from the splitting of water d. energy from electron transfer chains e. energy from the flow of hydrogen ions
Select all of the processes that cause flux of carbon into the atmosphere:
What will be an ideal response?
When runoff containing excessive nutrients enters streams and lakes it can result in an overgrowth of cyanobacteria and algae, a process known as
A. eutrophication. B. oxidation. C. fixation. D. ammonification. E. both ammonification and fixation.