The pKa of a certain weak acid is 4.0. Calculate the ratio of proton acceptor to proton donor at pH 7.0.

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#Question id: 13554

#XL - R Botany

The microscopic stomatal pores provide a pathway for diffusional movement of gases across the epidermis and cuticle

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#Question id: 13980

#XL - R Botany

The alignment of the cellulose microfibrils in the guard cell is

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#Question id: 14092

#XL - R Botany

The symptoms of phosphorus deficiency is,

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#Question id: 14435

#XL - Q Biochemistry

Differential centrifugation separates the particle which is different in 

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#Question id: 14733

#XL - S Microbiology

Staphylococci are coccus bacteria which usually occur in clusters. What is the benefit of being in cluster

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#Question id: 14734

#XL - S Microbiology

Among the following which bacteria shows corkscrew movement?

1. Treponema pallidum

2. Leptospira

3. Borrelia burgdorferi

4. Brachyspira pilosicoli

Which among the following combination is correct?