1541. Nor epinephrine is converted to enpinephrine by :
A. Dopamine hydroxylase
B. Dopa Decarboxylase
C. O-methylation
D. N-methylation *
1542. Rate limiting step in adrenaline synthesis is conversion of :
A. Tryosine to dopa *
B. Phenylalanine to tyrosine
C. Dopa to dopamine
D. Dopamine to nor epinephrine
1543. Which of the following has a ketogenic effect on livers ?
A. Insulin
B. Glucagon *
C. GH
D. Androgen
1544. Calcitonin is antagonist :
A. Parathyroid hormone *
B. Thyroxine
C. Triidothyronine
D. Serotonin
1545. Ribosomes are usually associated with :
A. Endoplasmic reticulum *
B. Mitochondria
C. Nucleolus
D. Plasma membrane
1546. Golgi bodies function are :
A. Protein lipid synthesis
B. Protein synthesis
C. Sorting of glycoproteins *
D. None of the above
1547. Chronic consumption of excess selenium can lead to :
A. Brittle hair and nails
B. Muscle weakness *
C. TPN
D. Diarrhea
1548. Normal glucose metabolism requires :
A. Chromium *
B. Manganese
C. Mangesium
D. Calcium
1549. Which cell organelle contains DNA?
A. Mitochondria *
B. Golgi body
C. Endoplasmic reticulum
D. Centriole
1550. Most important compensatory mechanism in metabolic acidosis:
A. Hyperventilation
B. Increased NH3 excretion by kidneys *
C. Increased Urinary phosphates
D. Increased HCO3 production