His ionisation series

1------pK1-----pKr--------pKr------14

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Nucleation phase 

Lag period (Time taken for nucleation) Rate-limiting Step.

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T1 and T2 Transitional B Cells

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Plant vacuole act as

a storage organelle for nutrients and waste products

a degradative compartment

an economical way of increasing cell size

a controller of turgor pressure

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CAUSES OF GENETIC DRIFT

Genetic drift in a small population over multiple generations can significantly affect the composition of a population’s gene pool. 

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Phosphorylation of Whi5 promotes its export out of the nucleus, allowing the transcription factor complex SBF to induce transcription of the G1/S phase cyclin genes CLN1 and CLN2.