Most of the ocean's productivity occurs ____.
A. in the open ocean
B. in the intertidal zone
C. in the pelagic province
D. near hydrothermal vents
E. in the benthic province
Answer: C
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What is the purpose of using bacteria to study the function of myoglobin?
a. Bacterial myoglobin is similar to mammal myoglobin. b. Bacteria genes are easier to clone than mammal genes. c. Bacteria can express a myoglobin gene and myoglobin molecules can be produced in quantity. d. Bacterial reproduction rates. e. Rates of evolutionary change in bacteria.
According to the endosymbiosis hypothesis ________.
A. the mitochondrion evolved from the same endosymbiont as the hydrogenosome B. the first endosymbiont was a fermentative organism C. the first endosymbiotic event involved an anaerobic bacterium D. All of the choices are correct.
Which statement best describes the genetic content of the two daughter cells in prophase II of meiosis?
A. haploid with one copy of each gene B. haploid with two copies of each gene C. diploid with two copies of each gene D. diploid with four copies of each gene
Brain-heart infusion, trypticase soy agar (TSA), and nutrient agar are all examples of which type of media?
A. synthetic B. enriched C. reducing D. complex E. selective