Sulfur normally exists as an eight-atom molecule, S8, while phosphorus exists as a four-atom molecule, P4

TLS Online TPP Program

#Id: 10604

#XL - R Botany

III. Vascular plants (pteridophyta)

EVOLUTION OF ROOTS

Instead of the rhizoids seen in bryophytes, roots evolved in the sporophytes of almost all vascular plants

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#Id: 10712

#XL - R Botany

In elongation zone, cells elongate rapidly and undergo a final round of divisions to produce a central ring of cells called the endodermis

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#Id: 9156

#XL - T Zoology

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#Id: 9634

#XL - T Zoology

The GAP for RAS (called a RAS-GAP) works by inserting one of its arginine side chains into the Ras active site, thus stabilizing an intermediate in the

hydrolysis reaction.

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#Id: 10095

#XL - T Zoology

Hemidesmosomes are integrin-containing anchoring junctions that attach cells to elements of the underlying extracellular matrix.