Which of the following groups represents the MOST closely related organisms?
a. kingdoms
b. species
c. orders
d. genera
e. taxa
B
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You isolate a cellular structure and determine that it is composed of ?-tubulin and ?-tubulin. Based on
this evidence, you correctly identify this structure as: a. a structural MAP. b. a microfilament. c. a microtubule. d. an actin filament. e. a myosin filament.
The method by which cell components are separated by centrifugation at progressively higher speeds is called _______ centrifugation.
a. differential b. velocity c. density-gradient d. equilibrium
Fish in a local lake have a mixture of brown and green scales and are found throughout the lake. Over a 5-year period, the lake develops more plant growth and an exotic predatory frog is introduced
What change would you expect to see in the original fish population? A) The fish with green scales will become more common. B) Brown-scaled fish will become more common. C) The fish will develop to resemble the introduced frog. D) No visible changes will occur in the fish population. E) Fish that prefer the unvegetated areas of the lake will become more common.
The common name for "cat" in Spanish is "gato" and in Chinese is "mao." Which of the following statements pertaining to the use of scientific names instead of common names is FALSE?
(a). Common names may include different sets of organisms. (b). Scientific names can be known and recognized by all scientists throughout the world. (c). To recognize an organism in the literature by its common name, a scientist would have to know multiple languages. (d). The scientific name begins to tie the organism into related groups. (e). The common name clearly identifies an organism as unique.