Which of the following does not act as a neurotransmitter
Acetylcholine
Epinephrine
Glutamic acid
Tyrosine
D.
Tyrosine
Tyrosine is a precursor to neurotransmitters and hormones. In dopaminergic cells in the brain, tyrosine is converted to L-DOPA by the enzyme tyrosine hydroxylase (TH). TH is the rate-limiting enzyme involved in the synthesis of the neurotransmitter dopamine.
The generation of excitation-contraction coupling involves all the following events except
generation of end-plate potential
release of calcium from troponin
formation of cross-linkages between actin and myosin
hydrolysis of ATP to ADP
Generally artificial pace-maker consists of one battery made up of
nickel
dry cadmium
photo sensitive material
lethium
Goitre can occur as a consequence of all the following except
iodine deficiency
pituitary adenoma
Grave's disease
excessive intake of exogenous thyroxin
Which of the following substances yield less than 4 kcal/mol when its phosphate bond is hydrolysed
Creatine phosphate
ADP
Glucose-6-phosphate
ATP
The genetic deficiency of ADH-receptor leads to
diabetes mellitus
glycosuria
diabetes insipidus
nephrogenic diabetes
Cellular totipotency was first demonstrated by
F C Steward
Robert Hooke
T Schwann
A v Leeuwenhoek
Choose the minor carp from the following
Cyprinus carpio
Anguilla sp
Labeo bata
cetanophyrngodon idella