When a protein exists in mono-, di- and tri-phosphorylated forms. The difference of a couple of phosphate groups has no significant effect on the overall relative molecular mass of the protein, hence a single band on SDS gels, but the small charge difference introduced on each molecule can be detected by

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#Question id: 13116

#Section 3: Genetics, Cellular and Molecular Biology

In chloroplast, the site of coupled oxidation-reduction reactions is the

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#Question id: 13123

#Section 3: Genetics, Cellular and Molecular Biology

Match the correct one?

A- COPI	i- vesicles transport proteins from the ER to the Golgi.
B- COPII	ii- vesicles mainly transport proteins in the retrograde direction between Golgi cisternae and from the cis -Golgi back to the ER.
C- Clathrin	iii- vesicles transport proteins from the plasma membrane (cell surface) and the trans-Golgi network to late endosomes.

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#Question id: 13153

#General Aptitude

The in-radius of an equilateral triangle is of length 3 cm. Then the length of each of its medians is

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#Question id: 13156

#Section 3: Genetics, Cellular and Molecular Biology

Tay sach;s disease are caused when which enzyme is mutated or non-functional?

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#Question id: 13198

#Section 6: Plant, Animal and Microbial Biotechnology

The sugar is a carbohydrate that are generally translocated  in the phloem in which form?

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#Question id: 13199

#Section 6: Plant, Animal and Microbial Biotechnology

The non-reducing sugar sucrose is most commonly translocated in the phloem rather than reducing sugar. Why?

a.) because they are less reactive than their reducing counterparts

b.) because sucrose contains more energy than a monosaccharides

c.) because the ketone or aldehyde group is reduced to an alcohol or combined with a similar group on another sugar so as not to be oxidized 

Which one of the following statements is true about translocation of non-reducing sugar?