Ras induces a kinase cascade that includes Raf, MEK, and MAP kinase. Which of the following is a dual-specificity protein kinase?

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#Question id: 29503

#Unit 6. System Physiology – Plant

Trichomes of nettles (Urtica dioica) have “cocktail” of secondary metabolites that can cause severe irritation of the skin of animals which are

a. Tartaric acid

b. Serotonin

c. Oxalic acid

d. Formic acid

Which of the following combination secondary metabolites is true

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#Question id: 11203

#Unit 7. System Physiology – Animal

Which of the following statements about action potentials is correct?

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#Question id: 13168

#Unit 10. Ecological Principles

Use the following diagram from the text showing the spread of the cattle egret, Bulbulcus ibis, since its arrival in the New World, to answer the following question.

How would an ecologist likely explain the expansion of the cattle egret?

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#Question id: 32265

#Unit 2. Cellular Organization

Persistently active signaling from the ER, particularly via PERK, activates genes that initiate:

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#Question id: 13019

#Unit 10. Ecological Principles

Air masses formed over the Pacific Ocean are moved by prevailing westerlies where they encounter extensive north- south mountain ranges, such as the Sierra Nevada and the Cascades. Which statement best describes the changes that these air masses undergo?