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Q. What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed? What are the destinations of the archenteron and of the blastopore?
Archenteron is the tube formed during gastrulation by means of invagination of the blastula wall inside the blatocele and it is the origin of the gastrointestinal tract. Blastopore is the opening of the archenteron to the exterior and the blastopore gives birth to one of the extremities of the digestive tube: the anus in deuterostome beings or the mouth in protostome beings.
Fertilization is the fusion of the two gametes (sperm and ovum) to produce a zygote which develops into the new individual with a genetic heritage derived from both the parents. S
Why are transgenics considered a threat to the environmental safety? Transgenics can be dangerous to the entire biosphere as the transfer of genes among species may have immed
Explain Mechanism of Absorption of Haem Iron? Haem iron is soluble in the alkaline environment of the intestine. It binds to the receptor on the enterocytes and is internalized
Syphilis and HIV Most clinicians treat HIV-infected patients with syphilis and normal CSF with standard penicillin doses for the stage of syphilis, but some patients may need
Maxillary sinus : It is a pyramidal shaped large cavity in the body of the maxilla containing many structures of concern during surgery. The sinus is lined by a membrane known
Q. Are there any bacteria made of more than one cell? There are no pluricellular bacteria. All bacteria are unicellular prokaryotic.
Q. What do you mean by Blackcaps? Blackcaps are small songbirds found throughout Europe. A large population of blackcaps inhabits the forests of Germany. These blackcaps have t
Define Changes in Physical Development in infants? It seems that all infants do is to sleep and hardly Seed. In spite of this observation, a well-fed and cased infant doubles i
What is eutrophication? Eutrophication is the process of excessive enhancing of nutrients, like phosphate and nitrate, in water because of direct deposit of non treated sewage.
Recovery of tar: the coke oven gas coming out from ovens is passed through a tower where liquid ammonia is sprayed. The tar and dust are removed and then recovered. Recover of
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