Which of the following separates molecules by movement due to size and electrical charge?

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#Question id: 141

#Unit 1. Molecules and their Interaction Relevant to Biology

At the isoelectric pH of an amino acid which has two pKa values the net charge is

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#Question id: 4718

#Unit 2. Cellular Organization

All the following statements about destruction of cyclins are true, except:

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#Question id: 6943

#Unit 5. Developmental Biology

The portion of the blastoderm-stage embryo which will give rise to most ectodermal, mesodermal, and endodermal tissues is called the:

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#Question id: 10794

#Unit 6. System Physiology – Plant

Which one of the following characteristics of about lignin is incorrect?

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#Question id: 15977

#Unit 12. Applied Biology

Embryo grows well in which pH range?