The secretions of endocrine glands ____
a. only affect their own tissue
b. provide feedback by paracrine action
c. reach their target tissue via the ECF
d. reach their target tissues via the circulatory system
e. are only active in the nervous system
ANSWER: d
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You would like to test the hypothesis that ammonia-oxidizing Archaea are more active and abundant than ammonia-oxidizing Bacteria in coastal marine water. What technique(s) or experiment(s) could you use to test this hypothesis?
A) environmental proteomics B) fluorescent in situ hybridization (FISH) C) stable isotope probing using 15N labeled ammonia D) stable isotope ratios of ammonia and nitrite
A key trait that distinguishes gnathostomes from other chordate lineages is the presence of
a. bony scales. b. claspers. c. jaws. d. the operculum. e. keratin.
Phospholipids contain ____________________ tails that are repelled by water. Fill in the blank(s) with the appropriate word(s)
The link between bond-forming reactions and membrane transport processes in the mitochondria is called __________________
(a) chemiosmotic coupling. (b) proton pumping. (c) electron transfer. (d) ATP synthesis.