Daphnia water fleas have evolved to have both sexual and asexual reproduction. Asexual reproduction is favored when the biology and chemistry of the lake is most likely to change across generations, while sexual reproduction is favored when conditions are most stable across generations.
a. true
b. false
Ans: b. false
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Which of the following is a way prokaryotic DNA can be altered by bacteriophages?
a. through binary fission b. through mitosis c. through conjugation d. through transduction
The outer part of a G protein receptor binds __________, and its inner part binds __________
a. the signaling molecule; tyrosine kinase b. the signaling molecule; a G protein c. G protein; tyrosine kinase d. G protein; an ion channel e. an ion channel; a G protein
When a honey bee scout returns to the hive, it will perform a round dance to indicate that the nectar is
close, while the waggle dance indicates the nectar is distant to the hive. This dance is an example of: a. sign stimuli linked to social interaction. b. migratory behavior stimulated by environmental changes. c. insight learning based on trial and error. d. a physiologically meaningful stimulus (food) and an irrelevant stimulus (dance). e. optimal foraging dependent on cooperative social behavior.
The science that names and groups organisms is
A. phylogeny. B. Linnaeus. C. taxonomy. D. anatomy.