_________ is the key intermediate in biosynthesis of nicotine
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18%
A. Ornithine
2%
B. Nicotinic acid
68%
C. N- methylpyrrolinium ion
12%
D. N-methylputrescine
nicotine has pronounced
effects on the cardiovascular system, where peripheral vasoconstriction, atrial tachycardia ............. are observed.
effects on the cardiovascular system, where peripheral vasoconstriction, atrial tachycardia ............. are observed.
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5%
A) an increase diastolic blood pressure
3%
B)an increase systolic blood pressure
9%
C)decrease in both systolic & diastolic blood pressure
83%
D)an increase in both systolic & diastolic blood pressure
The important alkaloids in pyridine and piperidine
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14%
A)Nicotine, morphine, Arecoline, Lobeline
62%
B) Nicotine, Coniine, Arecoline, Lobeline
14%
C)Nicotine, atropine, Arecoline, Lobeline
11%
D)Nicotine, ergotamine, Arecoline, Lobeline
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The scientific name for areca is
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12%
A)areca nut
21%
B)palmaceae
65%
C)areca catechu
2%
D)laliaceae
The important alkaloids of areca
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31%
A)arecoline
2%
B)nicotine
2%
C)arecaidine
65%
D)both a&c
Root bark of Punica granatum contains piperidine alkaloids, one of which is solid
Anonymous Quiz
32%
A. pelletierine
48%
B. pseudopelletierine
8%
C. methylpelletierine
6%
D. isopelletierine
5%
E. methyliso pelletierine
the alkaloid excract from poison hemlock is
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12%
lobeline
52%
conhydrine
16%
arecoline
14%
Putrescine
6%
nicotine
❤2
Tropine l-tropate is
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35%
A.atropine
9%
B.hyoscine
6%
C.apoatropine
47%
D.hyoscyamine
2%
E.belladonine
💔3❤1
All the followings describe Atropine except
Anonymous Quiz
25%
A.tropine ester of dl-tropic acid
17%
B.occurring in traces in solanaceous plants such as Atropa belladonna.
33%
C.the optically active form of hyoscyamine.
8%
D.readily hydrolyzes to racemic tropic acid and tropine.
17%
E.decreases gastric juice and helps in peptic ulcer treatment
All the followings describe Hyoscine (Scopolamine) except
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32%
A.The chief sources are Datura stramonium.
27%
B.Hyoscine occurs as volatile liquid.
14%
C.It hydrolyzes with acid or alkali into (-)-tropic acid and scopine =scopoline
27%
D.The mild hydrolysis with the enzyme yields (-)-tropic acid and scopine. It gives salts with HBr
All the followings describe homatropine except
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14%
A.obtained from Atropa belladonna, Solanaceae
18%
B.is less toxic than Atropine and hypnotic.
9%
C.is used as mydriatic with shorter effect than Atropine.
27%
D. with vitali's test gives yellow instead of a purple color
32%
E-is a false alkaloid
All the followings are correct in relation to atropine except
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20%
A. it is an ester of tropine dl atropate
54%
B. It is more stable than hyoscymine
5%
C. Both pyrrolidine & piperidine ring systems can be recognized in the molecule.
6%
D. Easly hydrolysed by Baryta water
15%
E.It is less active than hyoscyamine
All the followings are correct for Hyoscyamine except
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5%
A.easly hydrolysed by Baryta water
17%
B.it is formed of tropine base and tropic acid
25%
C.it is levorotatory
5%
D.it is a major constituent of Hyoscyamus muticus
48%
E. Used as cholinergic drug
All the followings are correct except
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3%
A.The (-)-isomer of tropin tropate is hyoscyamine
10%
B. the (+)-isomer of tropin tropate is not found in the plant
6%
C. Hyoscyamine is more active than atropine.
18%
D.The (±)-isomer of scopolamine is atrosine
63%
E.Hyoscine is the (±)-isomer of tropine tropate
All the followings are correct except
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8%
A. Hyoscine (scopolamine) is an epoxide of atropine & it is the (-)- isomer.
12%
B. Both pyrrolidine & piperidine ring systems can be recognized in hyoscine molecule.
12%
C. Over 200 tropane alkaloids have now been recorded. E
4%
D. N-butyl bromide (buscopan) is a Semi synthetic derivative
65%
E.piperidine ring in tropane alkaloids biosynthetically derived from lysine
All the followings are correct except
Anonymous Quiz
25%
A.SAM is involved in atropine biosynthesis
10%
B.shikimate and transamination are essential in biosynthesis of tropic acid
29%
C.scopolamine is a liquid alkaloid occurs in Datura stramonium
17%
D.tropane is natural basic solanaceous alkaloid
19%
E.Scopine is less stable thane oscine
All the followings are correct about belladonna except
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0%
A. Two parts of belladonna are official, the root & the leaf
8%
B.It is called deadly night shade leaf
80%
C. The root is richer than the leaf in alkaloids. The root contains 0.4% while the leaves 0.6%.
4%
D. Contains (-) hyoscymine, and traces of atropine in fresh plant
8%
E. Atropine is formed by racemization during the extraction process