Variance is a measure of how data points vary from the mean, whereas standard deviation is the measure of the distribution of statistical data.

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#Id: 4250

#Unit 12. Applied Biology

The pH indicator phenol red is used for monitoring the status of the medium. This will change from red at pH 7.2–7.4 to yellow or fuchsia as the pH becomes either acidic or alkaline, respectively.

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#Id: 9666

#Unit 4. Cell Communication and Cell Signaling

PI-3 kinase adds a phosphate to the 3′ carbon in one of two separate PI substrates, leading to formation of two PI 3-phosphates: PI(3,4)P2 or PI(3,4,5)P3

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#Id: 1524

#Unit 2. Cellular Organization

Two dimers 

Tetramers

Protofilaments (Tetramers are assembled end to end)

Protofibril (Four protofilaments)

10-nm filament (Four protofibrils associate side

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#Id: 6047

#Unit 10. Ecological Principles

Major Types of Terrestrial biome 

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#Id: 2391

#Unit 3. Fundamental Processes

The Nova and Fox families of RNA-binding proteins can promote or suppress splice site selection in a context-dependent fashion.