Thick ascending limb is called the diluting segment because NaCl is reabsorbed but water is not reabsorbed along with it 

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#Id: 2631

#Unit 13. Methods in Biology

S1 mapping is used to locate the 5’- or 3’-ends of RNAs and to quantify the amount of a given RNA in cells at a given time. 

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#Id: 1447

#Unit 4. Cell Communication and Cell Signaling

Tight junctions prevent the diffusion of: 

Macromolecules

Small water-soluble molecules

Ions

Membrane proteins 

Glycolipids

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#Id: 8799

#Unit 6. System Physiology – Plant

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#Id: 5519

#Unit 10. Ecological Principles

Age-specific fertility and survivorship data help determine net reproductive rate (R₀).

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#Id: 4788

#Unit 5. Developmental Biology

P2 cell establishes the

dorsal-ventral axis of C. elegans and confers on the ABp blastomere a fate different from that of its sister cell.