Telomerase, a reverse transcriptase that contains an RNA template, repeatedly adds TTAGGG repeats

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#Id: 6490

#Unit 3. Fundamental Processes

Strikingly, a number of TAFs resemble histones: nine of 14 TAPs contain a histone fold domain, though in most cases the TAFs lack the residues of this domain that are responsible for DNA binding. 

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#Id: 5964

#Unit 10. Ecological Principles

Measurement of productivity  

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#Id: 5482

#Unit 7. System Physiology – Animal

The nicotinic receptor for ACh is an example of a ligand-gated ion channel

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#Id: 7388

#Unit 5. Developmental Biology

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#Id: 6537

#Unit 7. System Physiology – Animal

The influx of Ca2+ ions raises, triggering the fusion of insulin- containing secretory vesicles with the plasma membrane and the secretion of insulin