During which geological period was there an first definite evidence of land plants and algae dominant of many plants?

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#Question id: 2989

#I Life Science/ Life Sciences Group – I-V

Use the figure to answer the question below.

In the figure, G1 is represented by which numbered part(s) of the cycle?

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#Question id: 11013

#I Life Science/ Life Sciences Group – I-V

What is the heart rate in the following EKG?

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#Question id: 15276

#SCPH06 I Botany

At high salt concentrations, the mRNA containing poly(A) tails binds to the complementary oligo(dT) molecules of the affinity column, and so, mRNA will be retained; all other RNA molecules can be washed through the column by further high salt solution. finally, the bound mRNA can be eluted by using

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#Question id: 15221

#SCPH05 I Biotechnology

Which technique can distinguish polyphosphorylated proteins

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#Question id: 5562

#SCPH28 | Zoology

In an egg cell treated with a chemical that binds calcium and magnesium ions, the ________.