A vitamin which has been found to inhibit callus formation and improve growth and quality of shoots.

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#Question id: 285

#Unit 1. Molecules and their Interaction Relevant to Biology

About how many nucleosomes could be made from a DNA strand consisting of 1000 base pairs?

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#Question id: 18929

#Unit 13. Methods in Biology

The heterozygosity of any locus can be ascertained by

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#Question id: 11450

#Unit 7. System Physiology – Animal

 The conversion of a stimulus into an action potential by a receptor cell is called ________.

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#Question id: 10796

#Unit 6. System Physiology – Plant

Flavonoids are one of the largest classes of plant phenolics, structure of flavonoids;

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#Question id: 20334

#Unit 4. Cell Communication and Cell Signaling

Sulfotransferases are the first enzymes of the core sulfation pathways, they transfer sulfate from PAPS to the hydroxyl or amino group of a wide variety of acceptors, as given below

a. Molecular basis of symbiotic host specificity in Rhizobium meliloti: nodH and nodPQ genes encode the sulfation of lipochito-oligosaccharide signals

b. Sulfation of the choriogonadotropin alpha subunit in human placental explants

c. Tyrosine sulfation of the amino terminus of CCR5 facilitates HIV-1 entry

d. A tyrosine-sulfated peptide based on the N terminus of CCR5 interacts with a CD4-enhanced epitope of the HIV-1 gp120 envelope glycoprotein and inhibits HIV-1 entry.

e. The Xanthomonas oryzae pv. oryzae raxP and raxQ genes encode an ATP sulfurylase and APS kinase that are required for AvrXa21 avirulence.

Which one of the following combination of above statements is correct?