Destruction of the corpus luteum results from a
__________ levels if pregnancy does NOT occur.
a. decline in chorionic gonadotropin
b. decline in LH
c. surge in progesterone
d. spike in LH
e. spike in estrogen
Answer: b
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Select the statements that provide direct biogeographical evidence for evolutionary theory. Check all that apply.
_____ Unrelated organisms from similar habitats exhibit similar characters. _____ Terrestrial mammals are not found naturally on any island greater than 300 miles from a mainland. _____ Organisms on islands are most similar to organisms on the nearby mainland, even when habitats on the mainland and island are quite different. _____ Invasive rats have colonized more than 80% of the world's islands.
To build a polymer from monomers you would use what type of reaction?
a. hydrolysis b. dehydration synthesis c. ionic bonding d. hydrogen bonding
A gram negative bacillus was recovered from the uring of a child with a history of recurrent urinary tract infections. The organisms was oxidase negative, non-lactose fermenter, indole negative urease positive, motile, and ornithrine decarboxylase positive. The most likely identification of this organism would be :
A. Proteus mirabilis B. Shigella Sonnei C. Escheriv=chia coli D. Klebsiella pneumoniae
Comb jellies may not be the most familiar animal to you, but they are critical in the food chain because they make up a significant portion of the planktonic biomass
Their feeding strategy is predatory and involves adhesives or mucus on their tentacles or other body parts. What feeding tactic do these animals use? A) suspension feeder B) fluid feeder C) deposit feeder D) food-mass feeder