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Biochemistry
Biochemistry Advanced
Quiz 1
Solution
Q.1.
Which of the following glycoprotein functions as a lubricant and protective agent?
a) Collagens
b) Mucins
c) Transferrins
d) Immunoglobulins
Q.2.
Which of the following is a hydroxyl fatty acid?
a) Linoleic acid
b) Palmitic acid
c) Linolenic acid
d) Cerebronic acid
Q.3.
Which of the following is false about fatty acids?
a) Melting point of fatty acids decreases with increase in the degree of saturation
b) Lipids in tissues that are subjected to cooling are more unsaturated
c) Naturally occurring unsaturated long-chain fatty acids are nearly Trans-configuration
d) The membrane lipids contain mostly unsaturated fatty acids
Q.4.
The binding of ligands to many GPCRs leads to ____________
a) Decrease in concentration of second messengers
b) Increase in concentration of second messengers
c) Decrease in concentration of first messengers
d) Increase in concentration of first messengers
Q.5.
Which of the following are included in the types of glycolipids?
a) N-acetylgalactosamine
b) N-acetylglucosamine
c) Xylose
d) Cerebrosides
Q.6.
Which of the following catalyzes the cutting of PIP2 into 2 moles of IP3 and diacylglycerol in cell signaling?
a) Phosphokinase C
b) Phospholipase C
c) Lipokinase
d) Phosphodiesterase C
Q.7.
Site directed mutagenesis facilitated research on ____________
a) Carbohydrates
b) Proteins
c) Lipids
d) Fats
Q.8.
Which product formed in the isomerization of mannose 6-phosphate?
a) Fructose 6-phosphate
b) Glucose 6-phosphate
c) 2-phosphoglycerate
d) 3-phosphoglycerate
Q.9.
Which is the first reaction of the pentose phosphate pathway?
a) Oxidation of glucose 6-phosphate to 6-phosphoglucono-δ-lactone
b) Oxidation of 6-phosphogluconate to ketopentose ribulose 5-phosphate
c) Reduction of 6-phosphoglucono-δ-lactone to glucose 6-phosphate
d) Reduction of ketopentose ribulose 5-phosphate to 6-phosphogluconate
Q.10.
Oxidation of 3 molecules of glucose by pentose phosphate pathway results in the production of ____________
a) 3 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO2
b) 4 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO2
c) 4 molecules of pentose, 3 molecules of NADPH and 3 molecules of CO2
d) 3 molecules of pentose, 4 molecules of NADPH and 3 molecules of CO2
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