What is thought to be the correct sequence of these events, from earliest to most recent, in the evolution of life on Earth?

1.  origin of mitochondria

2.  origin of multicellular eukaryotes

3.  origin of chloroplasts

4.  origin of cyanobacteria

5.  origin of fungal-plant symbioses

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#Question id: 353

#SCPH06 I Botany

Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?

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#Question id: 3533

#SCPH12 I Genetics

What would be the frequency of dominant phenotype for all character individuals from a mating of two AaBbCc individuals?

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#Question id: 554

#SCPH05 I Biotechnology

The Lineweaver-Burk plot is used to:

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#Question id: 13033

#SCPH05 I Biotechnology

The sample is then fractionated by electrophoresis through a _______. As all the proteins now have an _______ to mass ratio, they are separated on the basis of their _____.

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#Question id: 15542

#SCPH12 I Genetics

How would you expect a mutation in a gene encoding a tail fiber protein would affect the plaque phenotype of T4?