Following statements are related to the Epigenetic regulation of Hox gene expression in the chick limb .

A. Hoxa13 is normally not expressed during early limb bud outgrowth.

B. Hoxa13 is normally expressed during early limb bud outgrowth.

C. Inhibition of histone deacetylases with a TSA-coated bead implanted into the early limb bud results in precocious Hoxa13 expression and specifically reduced skeletal elements of the zeugopod

D. Inhibition of HAT proteins with a TSA-coated bead implanted into the early limb bud results in Hoxa13 expression and specifically reduced skeletal elements of the zeugopod

E. The epigenetic hold on gene Hoxa13 expression to allow the necessary time for zeugopod development.

F. The epigenetic hold on gene Hoxa13 expression to allow the necessary time for autopod development.

Which of the following combinations are correct?

#Question id: 10272

#Unit 8. Inheritance Biology

Specific place on a chromosome occupied by an allele

#Question id: 10273

#Unit 6. System Physiology – Plant

The existence of different pathways that serve a similar function and can replace each other without a clear loss in function is called,

#Question id: 10274

#Unit 6. System Physiology – Plant

In plastids, a partial glycolysis occurs that produces metabolites for plastidial biosynthetic reactions, which of the following is not synthesized in the plastid?

#Question id: 10275

#Unit 6. System Physiology – Plant

In the initial phase of glycolysis, each hexose unit is phosphorylated twice and then split, producing two molecules of triose phosphate, in these reactions included irreversible reaction. How much irreversible reaction is performed in the glycolytic pathway through in this series of reactions?

#Question id: 10276

#Unit 6. System Physiology – Plant

In glycolysis, the enzyme glyceraldehyde 3-phosphate dehydrogenase catalyzes;

#Question id: 10277

#Unit 6. System Physiology – Plant

Each of the nine glycolytic intermediates between glucose and pyruvate is phosphorylated. The phosphoryl groups seem to have many functions such as,

a) The plasma membrane generally lacks transporters for phosphorylated sugars, the phosphorylated glycolytic intermediates cannot leave the cell

b) After the initial phosphorylation, further energy is necessary to retain phosphorylated intermediates in the cell, despite the large difference in their intracellular and extracellular concentrations

c) Phosphoryl groups are essential components in the enzymatic conservation of metabolic energy, Energy released in the breakage of phosphoanhydride bonds is partially conserved in the formation of phosphate esters such as glucose 6-phosphate

d) Binding energy resulting from the binding of phosphate groups to the active sites of enzymes lowers the activation energy and increases the specificity of the enzymatic reactions

which of the following functions shows Importance of Phosphorylated Intermediates?