plants can store high levels of nitrate, and they can translocate it from tissue to tissue without deleterious effect. Yet if livestock or humans consume plant material that is high in nitrate, they may suffer with,

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#Question id: 4940

#11. Evolution and Behavior

In their laboratory simulations of the early Earth, Miller and Urey observed the abiotic synthesis of

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#Question id: 8293

#9. Diversity of Life Forms

The importance of computers and of computer software to modern systematics s is most closely linked to advances in ________.

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#Question id: 1046

#4. Cell Communication and Cell Signaling

Viruses that infect bacteria are referred to as

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#Question id: 1395

#4. Cell Communication and Cell Signaling

Which of the following mutations would promote malignancy in cells whose proliferation is inhibited by TGFβ?

a. overexpression of Smad2               

b. loss of Smad 4

c. overexpression of TGFβ receptor I

d. loss of TGFβ receptor II

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#Question id: 19215

#12. Applied Biology

After the initial attachment step, A. tumefaciens produces a network of ________fibrils that bind the bacterium tightly to the plant cell surface.