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22 carbon present in which of the following acid..
Anonymous Quiz
21%
A- Capric acid
19%
B- Behenic acid
26%
C- Lauric acid
35%
D- Arachidic acid
Which of the following have the braodest spectrum of activity.
:
Anonymous Quiz
21%
A. Erythromycin
32%
B. Streptomycin
39%
C. Chloramphenicol
8%
D. Tigecycline
When tetracyclines given between____of age then it causes the crown of permanent anterior dentition.
Anonymous Quiz
35%
A.3months to 3years
28%
B.3months to 4years
24%
C.3months to 5years
14%
D.3months to 6years
Most effective drugs for preventing infection of burnt surfaces and chronic ulcers..
Anonymous Quiz
10%
A.Gold sulfadiazine
53%
B.Silver sulfadiazine
28%
C.Sulfasalazine
9%
D.Mafenide
Dichlorobenzene exists in three isomers-ortho, meta and para isomers. Out of these three isomers, one with highest dipole moment will be
Anonymous Quiz
27%
(a)ortho-isomer
25%
(b)meta-isomer
28%
(c)para-isomer
20%
(d)all will have the same dipole moment
A catalyst in the finely divided state is more efficient because in this state
Anonymous Quiz
37%
A) More active center are formed
20%
B) Less surface area is available
39%
C) More energy is stored in the catalyst
5%
D) None of above
For first-order reactions the rate constant, k, has the unit(s)
Anonymous Quiz
25%
(a) l mol–1
30%
(b) time–1
37%
(c) (mol/l)–1 time–1
8%
(d) time mol l–1
The precipitating power of Al3+, Na+, Ba2+ is in the order
Anonymous Quiz
22%
A)Na+ > Ba2+ > Al3+
25%
B)Ba2+ > Na+ > Al3+
27%
C)Al3+ > Na+ > Ba2+
27%
D)Al3+ > Ba2+ > Na+
The pH of body fluids is stabilized by buffer systems. Which of the following compounds is the most effective buffer at physiologic pH?
Anonymous Quiz
22%
a. Na2HPO4, pKa5 12.32
26%
b. NH4OH, pKa5 9.24
42%
c. NaH2PO4, pKa5 7.21
10%
d. Citric acid, pKa5 3.09
Which one of the following enzymes is common to both glycolysis and gluconeogenesis?
Anonymous Quiz
32%
a. Pyruvate kinase
25%
b. Pyruvate carboxylase
27%
c. Hexokinase
16%
d. Phosphoglycerate kinase
Which one of the following activities is simultaneously stimulated by epinephrine in muscle and inhibited by epinephrine in the liver?
Anonymous Quiz
23%
a. Fatty acid oxidation
47%
b. Cyclic AMP synthesis
17%
c. Glycolysis
13%
d. Glycogenolysis
McArdle’s disease causes muscle cramps and muscle fatigue with increased muscle glycogen. Which of the following enzymes is deficient?
Anonymous Quiz
14%
Hepatic hexokinase
32%
Muscle debranching enzyme
40%
Muscle glycogen synthetase
14%
Muscle phosphorylase
Which one of the following enzymes catalyzes high-energy phosphorylation of substrates during glycolysis?
Anonymous Quiz
8%
Triose phosphate isomerase
60%
Glyceraldehyde-3-phosphate dehydrogenase
21%
Phosphoglycerate kinase
10%
Pyruvate kinase
Which of the activated groups or units is most closely associated with uridine diphosphate (UDP)?
Anonymous Quiz
17%
Acyl
28%
Glucose
52%
Phosphoryl
3%
Electrons
Aspirin inhibits which of the following enzymes?
Anonymous Quiz
11%
Lipoxygenase
61%
Cyclooxygenase
20%
Phospholipase D
8%
Lipoprotein lipase
MCQ. No.1 | POC.
What is the correct order of reactivity (most reactive first) of pyrrole, furan and thiophene towards electrophiles?
Anonymous Quiz
36%
Pyrrole>furan>Thiophene
33%
Furan>pyrrole>Thiophene
20%
Thiophene>pyrrole>furan
10%
Furan>Thiophene>pyrrole