Difference between gastrulation in Xenopus and sea urchin;

I. In Xenopus, formation of blastopore: mesoderm and endoderm move inside by involution over blastopore lip.

II. In sea urchin, formation of blastopore: mesodermal cells migrate into the interior; endoderm moves inside by invagination of the epithelial sheet.

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#Question id: 557

#Unit 1. Molecules and their Interaction Relevant to Biology

The number of substrate molecules converted to product in a given unit of time by a single enzyme molecule at saturation is referred to as the:

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#Question id: 28989

#Unit 7. System Physiology – Animal

Which of the following is the major mechanism to terminate the actions of norepinephrine?

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#Question id: 29515

#Unit 6. System Physiology – Plant

Which of the following represents a particularly toxic class of N-containing secondary metabolites that produces HCN upon tissue damage

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#Question id: 214

#Unit 1. Molecules and their Interaction Relevant to Biology

Pyridoxal phosphate is involved in which type of reaction?

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#Question id: 15979

#Unit 12. Applied Biology

Embryo developed through the cell proliferation__

a) From the explant without callus formation

b) Callus formation takes place

c) By indirect embryogenesis

d) By direct embryogenesis

e) By using growth regulator