Which bacterial strain was improved by scientists to be able to degrade 2,4-dinitrotoluene and promote plant growth

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#Question id: 32224

#Unit 2. Cellular Organization

For optimal activity, lysosomal acid hydrolases requires: 

a. Activation by proteasomal degradation

b. Activation by proteolytic cleavage

c. Requires an acid environment

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#Question id: 28493

#Unit 5. Developmental Biology

Zone of polarizing activity (ZPA) involves in which patterns of cell fates?

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#Question id: 12794

#Unit 10. Ecological Principles

An area in which different terrestrial biomes grade into each other is known as a(n)

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#Question id: 14990

#Unit 4. Cell Communication and Cell Signaling

Which smaller group of cells that crawl slowly along blood vessels, and that also  migrate into tissues in response to infection can differentiate into specific tissue macrophages ?

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#Question id: 2323

#Unit 2. Cellular Organization

Prior to replication the DNA in the nucleus is in the form of a tangled mass called