A. During intra – uterine life
B. just before birth
C. by around 6 years after birth
D. by around 16 years
Related Mcqs:
- Motor division of trigeminal division comes out via_______________?
A. Foramen spinosum
B. Foramen magnum
C. Foramen ovale
D. Foramen lacerum - The primary germ layer endoderm is derived from_____________?
A. Embryonal disc
B. Yolk sac
C. Amniotic cavity
D. Palacenta - Order of development of tooth germ is____________?
A. Bell-bud-cap
B. Cap-bell-bud
C. Bud-cap-bell
D. Bell-cap-bud - Germ tubes are formed mainly by_______________?
A. Candida albicans
B. Candida stellatoidea
C. Candida tropicalis
D. Candida pseudotropicalls - Tumour which shows origin from more than one germ layers is known as________________?
A. Teratoma
B. Plemorphic tumours
C. Choristoma
D. Hamartoma - Animals maintained in germ free environmental did not develop caries even when fed on a high carbohydrate diet is given by_____________?
A. Gottlieb
B. Miller
C. Synder
D. Orland and Fizgerald - Why fetal cells continue to divide but terminally differentiated adult cells do not divide ?
A. There are many cyclin inhibitors which prevent cell to enter into S phase in adult
B. Phosphatase absent in fetal cells
C. Proteinase is absent in fetus
D. Absence of CD kinase - Bone marrow stem cells differ from differ from differentiated progenitor stem cells in what respect ?
A. Provide differentiated terminal cells
B. Reconstitution of Bone marrow
C. Formation of the ovum
D. Act as a repair system for the body - NK cells are effective against viral infected cells only if the cell with infection___________?
A. Exprss MHC class I proteins
B. Unable to express MHC class I proteins
C. Express MHC class II proteins
D. Unable to express MHC class II proteins - Site of RBC formation in 20 years old healthy male is____________?
A. Flat bones
B. Long bones
C. Liver
D. Yolk sac
