Regarding the growth curve, a bacteria is more resistant to most antibiotics during the ___________ phase
a. stationary
b. lag
c. exponential (log)
d. stationary and log
Answer: a. stationary
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Which of the following is true of facilitated transport?
a. Energy must be used. b. Solutes move through the membrane unassisted. c. Solutes move up their concentration gradient. d. No energy is used during facilitated transport .
Which mineral ion is required for ribozymes to become active and begin self-replication?
a. ferrous iron b. ferric iron c. zinc d. magnesium e. selenium
Susan Littlehorse (28 years old, obese, and pregnant) complains of burning urine to you, her physician at the Indian Health Service. Blood tests show hemoglobin A1c concentrations over 9%. What is your initial diagnosis? How do you test your idea? How
should her condition be treated? What are some potential problems she may experience in the future? What will be an ideal response?
Imagine you conducted a study similar to the one by Thompson and Cunningham (2002) in which you tested the mosaic theory of coevolution in the Greya moth/woodland star flower system
In your study, you obtained the results that are displayed in the map below. NW of the line, plants abort flow-ers with moth larvae; SE of the line, plants tolerate the moth larvae. A white location marker indicates sites where Greya moths are the only pollinators. A black population marker indicates cases where additional pol-linators are present. What conclusions would you draw? a. The different trajectories that coevolution has taken in different geographic regions supports the mosaic theory of coevolution. b. Only the populations SE of the line form a coevolutionary mosaic. c. Greya moths have the same effect on woodland star flowers throughout the range. d. Factors other than coevolution with Greya likely have shaped the evolution plant defenses in woodland star flowers.