Many receptor tyrosine kinase pathways have MAPK as a downstream signaling component. MAPK can phosphorylate target proteins. What type of signaling molecule is MAPK?

A. Scaffold
B. Adapter protein
C. Second messenger
D. Enzyme


D. Enzyme

Biology & Microbiology

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Gap junctions that connect nerve cells in dental pulp are responsible for the discomfort felt when teeth are damaged

Indicate whether the statement is true or false.

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Soil mineral particles that range from 0.02?0.002 mm in diameter are called

a. sand. b. humus. c. clay. d. silt. e. macro/microparticles.

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Which of the following are the three phases of translation?

A. initiation, elongation, and completion B. initiation, elongation, and termination C. activation, chain growth, and completion D. addition of cap and tail, removal of exons, and RNA splicing

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Plants lacking well-developed conducting systems such as mosses, liverworts, and hornworts have been called

A. gametophytes. B. angiosperms. C. bryophytes. D. gymnosperms. E. sporophytes.

Biology & Microbiology