Which of these is the most common compound in the cell walls of gram-positive bacteria?

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#Question id: 1145

#Unit 4. Cell Communication and Cell Signaling

Phospholipase C is activated by:

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#Question id: 14709

#Unit 5. Developmental Biology

Choose right statement about cleavage pattern and gastrulation movements;

1.At the end of cleavage the animal embryo is essentially a closed sheet of cells, which is often in the form of a sphere enclosing a fluid-filled interior. Gastrulation, strictly the formation of the gut, converts this sheet into a solid three-dimensional embryonic animal body. 

2.During cleavage, cells move into the interior of the embryo, and the regions of endoderm. and mesoderm. which were originally adjacent in the cell sheet, take up their appropriate positions in the embryo.

3. Gastrulation results from a well- defined spatio-temporal pattern of change in cell shape, cell movement, and change in cell adhesiveness, the main forces of which are generated by localized contractions.

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#Question id: 28388

#Unit 5. Developmental Biology

Which of the following event is not seen during amphibian gastrulation development?

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#Question id: 11280

#Unit 10. Ecological Principles

Ecosystem services include processes that increase the quality of the abiotic environment. Which of the following processes would fall under this category?

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#Question id: 31378

#Unit 5. Developmental Biology

The following experimental manipulations were carried out with Xenopus embryo.

Manipulation X: Exposure to UV radiation leading to the failure of cortical rotation.

Manipulation Y: Gastrulae treated with lithium chloride.

The following statements were made with respect to the above manipulations. Which one of the following represents correct statement?