Part 1 Qns need answers

[quest_life]

Which of the following describes a major effect of sickle cell anemia:

1) absence of biphopoglycerate binding of hemoglobin
2) substitution of two proximal histidines
3) decreased solubility of deoxy form of HB
4) P50 value for HB similar to that of myoglobin
5) Decreased number of subunits of HB

Can someone explain this plz ?

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[Venkatcpp]

Thank you very much for your quick responses. How abot this one?
The oldedst enamel in a fully erupted first molar is located at the
a cervix o the tooth
bOral surface of a cusp
cmesial and distal surfaces ofd the tooth
ddentinoenamel juntion underlying a cusp
e dentinoenamel junction underlying a fissure

(d)

 

[heartdoc74]

DEJ underlying the cusps

 

[foreigndentist]

Andwer is b

Coz in process of maturation of enamel it starts from the ht of the crown & progress cervically.

 

[asdf84]

Thank you very much for your quick responses. How abot this one?
The oldedst enamel in a fully erupted first molar is located at the
a cervix o the tooth
bOral surface of a cusp
cmesial and distal surfaces ofd the tooth
ddentinoenamel juntion underlying a cusp
e dentinoenamel junction underlying a fissure

d.

 

[asdf84]

Thank you very much for your quick responses. How abot this one?
The oldedst enamel in a fully erupted first molar is located at the
a cervix o the tooth
bOral surface of a cusp
cmesial and distal surfaces ofd the tooth
ddentinoenamel juntion underlying a cusp
e dentinoenamel junction underlying a fissure

d

 

[grinningrice]

UGh! Why am I so neurotic?
If you get a skin graft from a identical twin, is it an autograft, allugraft, xenograft?

 

[perennialdent]

UGh! Why am I so neurotic?
If you get a skin graft from a identical twin, is it an autograft, allugraft, xenograft?

it would be an allograft....its from a different person anywayz...and also has risk of transmission of disease which the patient does not have...also genetic polymorphism in some cell receptors may have occured leading to antigenicity...
this is wat i think

 

[docasrpa]

if d graft is from genetically identical twin its isograft\
gen non identical twin allograft

 

[vijaggi]

Thank you very much for your quick responses. How abot this one?
The oldedst enamel in a fully erupted first molar is located at the
a cervix o the tooth
bOral surface of a cusp
cmesial and distal surfaces ofd the tooth
ddentinoenamel juntion underlying a cusp
e dentinoenamel junction underlying a fissure

 

[vijaggi]

can any body tell me d ans
which of the following grooves uniting i the distal pit on the occlusal surface of mandibular second molar represents the one that normally has no counterpart in the distal pit of first molar
a) distolingual
b) distofacial triangle
c) distolingual triangle
d) distal margin
e) distal portion of central

 

[DT116]

35.