Which of the following hormones is indicative of the presence of a developing embryo and thus is the basis of home pregnancy tests?
A. hCG
B. progesterone
C. estradiol
D. FSH
E. LH
A
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Answer the following statements true (T) or false (F)
1.Lodgepole chipmunks have moved to higher elevations in the last century as temperatures at Yellowstone have climbed. 2.Fish ladders can help fish populations deal with obstructions created by dams. 3.If you were preparing a generalized plan to conserve biodiversity, besides habitat destruction, you would list eutrophication as the primary threat to biodiversity. 4.Overexploitation is harvesting a species faster than it can reproduce. 5.Smog, among other things, indicates change in large-scale chemical cycles.
Which two structures of the human digestive tract can be classified as endocrine glands because they produce hormones?
a. the liver and small intestine b. the pancreas and small intestine c. the pancreas and stomach d. the liver and pancreas
A cladogram conveys information about ancestors and descendants of an organism.
a. true b. false
Microbial plastics are
a. biodegradable polyhydroxyalkanoates. b. replacing petroleum-based plastics because they are less expensive. c. lacking in many of the desirable properties found in petroleum-based plastics. d. produced from monomers bacteria excrete as a waste product.