MCQ. No.79| Enzymes
Of Which warburg’s yellow enzyme contains as a prosthetic group?
Of Which warburg’s yellow enzyme contains as a prosthetic group?
Anonymous Quiz
18%
Biotin
38%
Thiamine pyrophosphate
37%
Riboflavin-5-phosphate
7%
NAD+
MCQ. No.80| Enzymes
In competitive enzyme activity inhibition occurs
In competitive enzyme activity inhibition occurs
Anonymous Quiz
19%
Apparent Km is decreased
31%
Vmax is increased
38%
Apparent Km is increased
11%
Vmax is decreased
MCQ. No.81| Nucleic Acid
The chemical name of guanine is
The chemical name of guanine is
Anonymous Quiz
38%
2,4-Dioxy-5-methylpyrimidine
33%
2-Amino-6-oxypurine
23%
2-Oxy-4-aminopyrimidine
6%
2, 4-Dioxypyrimidine
MCQ. No.82| Nucleic Acid
In RNA moleule ‘Caps’..
In RNA moleule ‘Caps’..
Anonymous Quiz
21%
Are unique to eukaryotic mRNA
21%
Allow tRNA to be processed
31%
Occur at the 3’ end of tRNA
27%
Allow correct translation of prokaryotic mRNA
MCQ. No.83| Nucleic Acid
The width (helical diameter) of the double helix in B-form DNA in nm is..
The width (helical diameter) of the double helix in B-form DNA in nm is..
Anonymous Quiz
29%
4
38%
3
29%
2
4%
1
MCQ. No.84| Nucleic Acid
Elongation of a peptide chain involves all the following except..
Elongation of a peptide chain involves all the following except..
Anonymous Quiz
14%
mRNA
35%
Formyl-Met-tRNA
24%
GTP
27%
Tu, TS and G factors
MCQ. No.85| Nucleic Acid
mRNA is complementary copy of..
mRNA is complementary copy of..
Anonymous Quiz
23%
Antisense strand of DNA
34%
5′-3′ strand of DNA+
30%
3′-5′ strand of DNA
13%
tRNA
MCQ 86 | Pharmaceutics
Hexylresorcinol __ and phenylmercuric benzoate __ added in parenteral dosage forms are moderately bactericidal.
Hexylresorcinol __ and phenylmercuric benzoate __ added in parenteral dosage forms are moderately bactericidal.
Anonymous Quiz
37%
0.1% and 0.5 %
37%
1% and 0.5 %
22%
0.1% and 5 %
4%
1% and 5 %
MCQ 87 | Pharmaceutics
Paraffinic oil and Silicone oil are examples of _______ ingredient found in rubber clouser
Paraffinic oil and Silicone oil are examples of _______ ingredient found in rubber clouser
Anonymous Quiz
10%
Filler
29%
Antioxidant
50%
Lubricant
10%
Accelerator
Chromophores
• They are groups with one element of unsaturation (unsaturated linkages or groups) and cause coloring to the molecules when they are attached to a non-absorbing hydrocarbon chain.
Auxochromes
• They are groups that do not confer color but increase the coloring power of a chromophore.
• They are functional groups that have non-bonded valence electrons and show no absorption at l > 220 nm; they absorb in the far UV.
• -OH and -NH2 groups cause a red shift.
• They are groups with one element of unsaturation (unsaturated linkages or groups) and cause coloring to the molecules when they are attached to a non-absorbing hydrocarbon chain.
Auxochromes
• They are groups that do not confer color but increase the coloring power of a chromophore.
• They are functional groups that have non-bonded valence electrons and show no absorption at l > 220 nm; they absorb in the far UV.
• -OH and -NH2 groups cause a red shift.
MCQ 88 | Pharmaceutics
Film coating has proved successful as a result of the many advantages offered, except
Film coating has proved successful as a result of the many advantages offered, except
Anonymous Quiz
35%
Significant reduction in processing times
26%
Increased process efficiency and output
20%
Increased flexibility in formulations
18%
Control drug release
MCQ 89 | Pharmaceutics
Diffusional constat for Case II transport drug release mechanism in swallelleble system having spherical geometry is
Diffusional constat for Case II transport drug release mechanism in swallelleble system having spherical geometry is
Anonymous Quiz
16%
0.43 < n < 0.50
46%
0.50 < n < 0.89
23%
0.89 < n < 1.00
15%
n >1.00
MCQ 90 | Pharmaceutics
Non-nutritive syrups for diabetic use may contain
Non-nutritive syrups for diabetic use may contain
Anonymous Quiz
33%
Sorbitol
49%
Invert syrup
14%
Cane sugar
5%
Milk sugar
MCQ. No.91 Carbohydrates..
Conditions in which gluconeogenesis is increased..
Conditions in which gluconeogenesis is increased..
Anonymous Quiz
48%
Diabetes mellitus and Starvation
30%
Diabetes mellitus and atherosclerosis
10%
Fed condition and thyrotoxicosis
11%
Alcohol intake and cigarette smoking
MCQ. No.92 Carbohydrates..
An uncoupler of oxidative phosphorylation such as dinitrophenol....
An uncoupler of oxidative phosphorylation such as dinitrophenol....
Anonymous Quiz
14%
Specially inhibits cytochrome b
49%
Inhibits electron transport without impairment of ATP synthesis
28%
Inhibits electron transport and ATP synthesis
9%
Allow electron transport to proceed without ATP synthesis
MCQ. No.93 Carbohydrates..
Each branch of amylopectin is at an interval of glucose units:
Each branch of amylopectin is at an interval of glucose units:
Anonymous Quiz
21%
34–40
48%
14–20
23%
44–50
9%
24–30
MCQ. No.94 Carbohydrates..
Enzymes which is associated with glycogen synthesis:
Enzymes which is associated with glycogen synthesis:
Anonymous Quiz
10%
Phosphorylase
55%
Glucose-6-phosphatase
27%
Amylo-(1,4 → 1,6)-transglycosylase
7%
Amylo-1,6-glucosidase
MCQ. No.95 Carbohydrates..
A man goes on a hunger strike and confines himself to a liquid diet with minimal calories. Which of the following would occur after 4 to 5 h?
A man goes on a hunger strike and confines himself to a liquid diet with minimal calories. Which of the following would occur after 4 to 5 h?
Anonymous Quiz
17%
Increased Ca++ in muscle and decreased glycogenolysis
32%
Decreased Ca++ in muscle and decreased glycogenolysis
39%
Increased cyclic AMP and increased liver glycogenolysis
12%
Decreased cyclic AMP and increased liver glycogen synthesis
MCQ. No.95 Carbohydrates..
Explanation:
In the presence of low blood glucose, epi- nephrine or norepinephrine interacts with specific receptors to stimulate adenylate cyclase production of cyclic AMP. Cyclic AMP activates protein kinase, which catalyzes phosphorylation and activation of phosphorylase kinase. Activated phosphorylase kinase activates glycogen phosphorylase, which catalyzes the breakdown of glycogen. Phosphorylase kinase can be activated in two ways. Phosphorylation leads to complete activation of phosphorylase kinase.
Alternatively, in muscle, the transient increases in levels of Ca++ associated with contraction lead to a partial activation of phosphorylase kinase. Ca++ binds to calmodulin, which is a subunit of phosphorylase kinase. Calmodulin regulates many enzymes in mammalian cells through Ca++ binding.
Explanation:
In the presence of low blood glucose, epi- nephrine or norepinephrine interacts with specific receptors to stimulate adenylate cyclase production of cyclic AMP. Cyclic AMP activates protein kinase, which catalyzes phosphorylation and activation of phosphorylase kinase. Activated phosphorylase kinase activates glycogen phosphorylase, which catalyzes the breakdown of glycogen. Phosphorylase kinase can be activated in two ways. Phosphorylation leads to complete activation of phosphorylase kinase.
Alternatively, in muscle, the transient increases in levels of Ca++ associated with contraction lead to a partial activation of phosphorylase kinase. Ca++ binds to calmodulin, which is a subunit of phosphorylase kinase. Calmodulin regulates many enzymes in mammalian cells through Ca++ binding.