Three major classes of animal-cell junctions: 

1. Anchoring junctions

2. Tight junctions

3. Gap junctions

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#Id: 7265

#Unit 6. System Physiology – Plant

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#Id: 3533

#Unit 2. Cellular Organization

A functional gene can be located through the use of an expressed sequence tag (EST)

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#Id: 5049

#Unit 3. Fundamental Processes

DnaA is the E. coli licensing factor that must be made anew for each round of replication. Drugs that block protein synthesis block a new round of replication, but not continuation of replication.

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#Id: 9536

#Unit 11. Evolution and Behavior

Evolution

Evolution means descent with modification, or change in the form, physiology, and behavior of organisms over many generations of time. 

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#Id: 10481

#Unit 4. Cell Communication and Cell Signaling

p53

tumor-suppressor gene 

arrest of cells with damaged DNA