Following statements are regarding to the establishment of ventral axis in Drosophila.

A. Ventral follicle cells synthesize Pipe. Pipe signal sulfates ventral vitelline proteins.

B. GD cleaves Snake to its active form and forms a complex with Snake and uncleaved Easter proteins.

C. Sulfated vitelline membrane proteins bind Gastrulation-defective (GD).

D. Easter protein is cleaved into its active form. Cleaved Easter binds to and cleaves Spätzle; activated Spätzle binds to Toll receptor protein.

E. Dorsal protein enters the nucleus and ventralizes the cell.

F. Toll activation activates Tube and Pelle, which phosphorylate the Cactus protein. Cactus is degraded, releasing it from Dorsal.

Which of the following is the correct sequence?

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#Question id: 1063

#Unit 4. Cell Communication and Cell Signaling

A key feature of all viral infections is the

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#Question id: 5074

#Unit 5. Developmental Biology

The "mid-blastula transition" is the point in development when:

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#Question id: 205

#Unit 1. Molecules and their Interaction Relevant to Biology

Which coenzyme is composed of a 2-mercaptoethylamine unit, the vitamin pantothenate and an ADP moiety? 

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#Question id: 3455

#Unit 11. Evolution and Behavior

A duck egg is removed from its mother’s nest and incubated by a barnyard hen. The duckling hatches out in the presence of the barnyard hen and stays in her nest. After a couple of days, the duckling is presented with a choice between its biological mother and the hen that incubated it. The duckling approaches and follows the hen. This set of observations demonstrates the phenomenon of

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#Question id: 31412

#Unit 7. System Physiology – Animal

Which of the following would not be expected to increase renin secretion?