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 *
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 *
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