With its claw removed, the male fiddler crab will be unable to mate; the claw is needed to ________
a. restrain the female while mating
b. obtain prey to provide to the female
c. confront predators who otherwise would attack the defenseless females
d. attract females, who select males on the basis of claw size
d
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Which type of epithelium is found in the inner lining of blood vessels?
a. simple squamous epithelium b. stratified squamous epithelium c. cuboidal epithelium d. simple columnar epithelium e. simple pseudostratified columnar epithelium
Four of the five choices listed below are features of
plasma membrane extensions. Select the exception. a. amyloplast b. centriole c. microtubule d. basal body e. 9 + 2 array
Which of the following is the longest?
A) An uncondensed prokaryotic chromosome B) A condensed eukaryotic chromosome C) An uncondensed eukaryotic chromosome D) A condensed prokaryotic chromosome
Four of the following statements about fossils found on the island of Flores are true. Which one is the exception?
A. They are shorter than modern humans. B. They have very small brains. C. They are 200,000 years old. D. They have a heavy brow ridge. E. They have been described to be like “hobbits.”