Dependence on animal vectors for fertilization and dispersal is characteristic of many species of ____.
A. ferns
B. angiosperms
C. mosses
D. conifer
E. cycads
Answer: B
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The text discusses an incident where a number of
whales beached themselves in 2001. What is true about this case? a. It happened near an area where the United States Navy was testing a sonar system. b. Very loud, low-frequency sounds were sent through the water. c. The whales hurriedly surfaced in fear. d. Rapid change in pressure damaged the whales’ acoustic systems. e. All of these are true.
Visual pigments are molecules made of
a. protein only. b. carbohydrate only. c. vitamin derivative only. d. steroid only. e. protein and a vitamin derivative
Carl Woese is BEST known for discovering that ________
A) eukaryote membrane-bound organelles are descended from endosymbionts B) the oldest fossils are 3.4 billion years old C) prokaryotes comprise two very different branches: Bacteria and Archaea D) energy acting on gases and water vapor will create a "primordial soup" of organic molecules E) the last universal common ancestor (LUCA) did not have DNA-dependent RNA polymerase
During prophase, __________ is(are) compacted into visible chromosomes
a. chromatin b. centrioles c. centromeres d. kinetochores e. colchicine