START/Restriction point is defined as the point at which cells are: 

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#Question id: 1473

#Unit 4. Cell Communication and Cell Signaling

A cluster of tumor cells that produces and secretes growth factors to induce surrounding cells to grow and divide is showing which type of cell-to-cell signaling?

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#Question id: 19230

#Unit 12. Applied Biology

A physical gene transformation method that can be used with a wide range of plants and tissues; easy and inexpensive

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#Question id: 13073

#Unit 13. Methods in Biology

Restriction enzymes must be use in RFLP and RAPD markers for genome mapping in plants;

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#Question id: 2628

#Unit 2. Cellular Organization

Choose true statement about lac repressor;

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#Question id: 15656

#Unit 13. Methods in Biology

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. Explain the two regulatory pathways for Mel1 that can explain the behavior of the MelA– and MelB– mutations. For each regulatory pathways what is a role for the inducer melibiose?