Increased amounts of the amino acid proline or sugars such as glucose and fructose increase solute concentration, drawing water into the cells.

TLS Online TPP Program

#Id: 6384

#Unit 2. Cellular Organization

The DNA-binding domain occupies residues 1–59. It contains two a-helices separated by a turn. This is a common DNA-binding motif known as the HTH (helix-turn-helix); the two a-helices fit into the major groove of DNA

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#Id: 2380

#Unit 3. Fundamental Processes

Prp5 is critical for U2 binding

TLS Online TPP Program

#Id: 7361

#Unit 5. Developmental Biology

On the left side of Hensen’s node, Sonic hedgehog (Shh) activates Cerberus, which stimulates BMPs to induce the expression of Nodal

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#Id: 4478

#Unit 13. Methods in Biology

DIC microscopy easily defines the outlines of large organelles, such as the nucleus and vacuole.

TLS Online TPP Program

#Id: 5268

#Unit 7. System Physiology – Animal

SA node has an unstable resting membrane potential.

The “resting membrane potential” of the sinus nodal fiber between discharges has a negativity of about −55 to −60 millivolts.