Urea transporters UT-A1 and UT-A3 facilitate diffusion of urea out of the medullary collecting ducts while UT-A2 facilitates urea diffusion into the thin descending loop of Henle.

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#Id: 6569

#Unit 7. System Physiology – Animal

Glucagon secretion is increased by stimulation of the sympathetic nerves to the pancreas, & sympathetic effect is mediated via β-adrenergic receptors and cAMP

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#Id: 3102

#Unit 3. Fundamental Processes

An origin at which replication is initiated. It may also have a terminus at which replication stops.

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#Id: 379

#Unit 2. Cellular Organization

A conserved region found in every core histone, called the histone-fold domain HFD.

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#Id: 3535

#Unit 2. Cellular Organization

Mitochondrial genomes have genes encoding (mostly complex I–IV) proteins, rRNAs, and tRNAs

TLS Online TPP Program

#Id: 8521

#Unit 2. Cellular Organization

Lysine acetylation & Detyrosylation are found only on α-tubulin and are absent from β-tubulin.