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?
Answer: The illustration should follow what is outlined in Figures 13.4a, 13.11b, and 13.12b in the textbook. Several morphologies exist, and the overall diagram should indicate their relative close proximity to each other so that electron transfer can occur at a fast rate.
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Which of the following sequences correctly describes mitosis?
A) prophase -> anaphase -> metaphase -> telophase= B) prophase -> metaphase -> anaphase -> telophase C) prophase -> metaphase -> telophase -> anaphase D) metaphase -> prophase -> telophase -> anaphase E) metaphase -> prophase -> anaphase -> telophase
In nitrification, electrons are donated to an electron transport chain from ammonia or from nitrite to be oxidized to ________, with ________ serving as the terminal electron acceptor.
Fill in the blank(s) with the appropriate word(s).
An advantage to studying linkage disequilibrium is that ________
A) it provides another tool enabling the reconstruction of the history of genes and populations B) it provides clear evidence of speciation events C) it can be used to identify alleles that have been recently selected by natural selection D) Both A and C.
Terrestrial plants obtain carbon dioxide, required for photosynthesis, from the:a
soil. b. roots. c. atmosphere. d. water. e. sun.