During differential sedimentation the largest class of particles forms a pellet on the
bottom of the centrifuge tube, leaving smaller-sized structures within the supernatant.

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#Id: 3087

#Unit 3. Fundamental Processes

he gene ftsZ plays a central role in division. Mutations in ftsZ block septum formation and generate filaments.

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#Id: 7209

#Unit 5. Developmental Biology

Corticosteroids and prostaglandins can also decrease expression of class II MHC molecules.

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#Id: 8448

#Unit 1. Molecules and their Interaction Relevant to Biology

In a typical a-helix of 12 (or n) residues, there are 8 (or n-4) hydrogen bonds.

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#Id: 9089

#Unit 4. Cell Communication and Cell Signaling

ADP-ribosylation blocks the GTPase activity of Gαs and renders Gαs permanently active. 

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#Id: 4868

#Unit 13. Methods in Biology

The level of significance is denoted by the Greek symbol α (alpha).

Therefore, the level of significance is defined as follows: