Which solvent is usually used for SEC generally use in lab?

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#Question id: 28419

#Unit 5. Developmental Biology

A 1-cell-thick area in the center of the avian blastoderm that forms most of the actual embryo is called___

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#Question id: 1206

#Unit 4. Cell Communication and Cell Signaling

Serine and threonine are to ........  as tyrosine is to receptor tyrosine kinases.

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#Question id: 32359

#Unit 1. Molecules and their Interaction Relevant to Biology

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#Question id: 12240

#Unit 10. Ecological Principles

Two plant species co-occur in a prairie. Species X always occurs near species Y. However, species    often occurs in isolation from species X and produces more seeds when alone than when growing next to species X. Which of the following interactions between species X and Y could generate this pattern?

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#Question id: 3755

#Unit 3. Fundamental Processes

In E. coli, there is a mutation in a gene called dnaB that alters the helicase that normally acts at the origin of replication. Which of the following events would you expect to occur as a result of this mutation?