941.Which deficiency causes diarrhea, dermatitis and dementia
A.Pyridoxine
B.Vit A
C.Riboflavin
D.Vitamin B1
E.Niacin
942.decreased levels of B12 are associated with the following
A.autoimmune gastritis
B.Crohn’s
C.Subacute degeneration of cord
D.All of the above
E.None of the above
943.regarding iron, which is false
A.absorption is increased by vitamin C
B.most is found in myoglobin
C.most in absorbed in duodenum
D.women have smaller iron stores than men
E.transferring is usually 33% saturated
944.smoking is associated with all of the following except
A.particle deposition in alveolar macrophages
B.spontaneous abortion
C.atherosclerosis
D.bladder carcinoma
E.chronic liver disease
945.An infectious complication of transfusion
A.Is most commonly hepatitis C
B.Is most commonly hepatitis B
C.Is rarely transmission of HIV since screening was instituted
D.Never includes gonorrhoea or malaria
E.Can be clinically apparent mononucleosis in about 7 % of cases
946.iron deficiency anaemia features
A.a normal haematocrit
B.increased serum ferritin
C.normal mean cell volume
D.low platelet count
E.none of the above
947.Platelets
A.Have a normal concentration range of 80 –100 x 103/mm3
B.Are important in haemostasis only
C.Remainviable in stored blood for 24 hours only
D.Normally are removed from the circulation almost entirely by the spleen
E.Have an average lifespan of 20 days
948.With regard to blood types
A.Group A is most common
B.Anti A and anti B agglutinins increase into the 6thdecade
C.There are 6 possible ABO genotypes
D.Group AB persons have both anti A and anti B agglutinins
E.Group O + is the universal recipient
949.Sickle cell anaemia
A.Is a thalassaemia
B.In the heterozygote does not cause sickling
C.Is caused by reduced G6PD
D.Causes normoblastic hyperplasia of bone marrow
E.Gives resistance against haemophilis influenzae
950.Of the heritable hypercoagulable states
A.ATIII deficiency results in reduced destruction of Va and VIIIa
B.Factor V gene mutations are the most common
C.Antiphospholipid antibody syndrome results in reduced platelet activation
D.The Leiden mutation renders thrombin resistant to deactivation
E.All of the above