Exchange of cells between mother and fetus
Justify the exchange of cells between mother and fetus through the placenta?
Expert
Under general conditions, there is not any passage of cells across the placenta for the duration of gestation. The placenta has a smooth mucosa separating the richly vascularized area in contact with mother’s endometrium from umbilical cord in contact with the fatal blood. This obstacle is called placental barrier. Even though permeable to a number of substances (selective permeability) the placental barrier prohibits the passage of cells.
Illustrate out the wall resistance of plant cells? Does this resistance assist or make tricky the access of water in the cell?
From zygote, pluricellular organisms are formed by the serial mitosis. Would this formation be probable if each cell made by the mitosis had an identical life concerning its antecedent cells? How did evolution solve that difficulty?
An mRNA molecule codifies just one kind of protein?
What sort of data do Genome database contain?
Name the elements which form the middle ear? State the names of the three middle ear ossicles which participate in phonosensitivity?
Briefly state the functions of spleen.
Are mollusk metameric living beings? Completely analyzing this aspect could it be said that molluscs are evolutionarily proximal to the nematodes or to the annelids?
Provide some illustration of electrophilic substitution reaction.
On the basis of way of expression, the e communication can be classified in the following two types: I. Oral communication, II. Written communication, and III. Gesture communication.
Does pH influence enzyme activity?
18,76,764
1940475 Asked
3,689
Active Tutors
1440920
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!