- Amino acid alanine is
(a) monoamino monocarboxylic amino acid
(b) sulphur containing amino acid
(c) monoamino dicarboxylic amino acid
(d) basic amino acid. (AMU, 2013) - Individual subunits of polysaccharides are linked by
(a) glycosidic bonds (b) phosphodiester bonds
(c) peptide bonds (d) hydrogen bonds.
(AMU, 2013) - Which one of the following biomolecules is correctly
characterised?
(a) Lecithin - a phosphorylated glyceride found in cell
membrane.
(b) Palmitic acid - an unsaturated fatty acid with 18 carbon
atoms.
(c) Adenylic acid - adenosine with a glucose phosphate
molecule.
(d) Alanine amino acid - contains an amino group and an
acidic group anywhere in the molecule.
(AIPMT Mains, 2012) - Identify the polysaccharide with β-glycosidic bonds.
(a) Starch (b) Glycogen
(c) Sucrose (d) Cellulose
(WB JEE, 2012) - Higher animals cannot synthesise few fatty acids which are
very essential for their growth and development. These fatty
acids are typically
(a) saturated (b) cyclic
(c) unsaturated (d) branched.
(WB JEE, 2012) - Select the incorrect statement.
(a) Amino acids are substituent methanes.
(b) Glycerol is a trihydroxy propane.
(c) Lysine is a neutral amino acid.
(d) Lecithin is a phospholipid.
(e) Adenosine is a nucleoside. (Kerala, 2011) - In a polysaccharide, the individual monosaccharides are linked
by a
(a) glycosidic bond (b) peptide bond
(c) ester bond (d) phosphodiester bond
(e) hydrogen bond
(Kerala, 2011) - Which of the following is not a conjugated protein?
(a) Peptone (b) Phosphoprotein
(c) Lipoprotein (d) Chromoprotein
(WB JEE, 2010)
Assertion & Reason
The following questions consist of two statements each : assertion
(A) and reason (R). To answer these questions, mark the correct
alternative as directed below :
(a) If both A and R are true and R is the correct explanation
of A.
(b) If both A and R are true but R is not the correct explanation
of A.
(c) If A is true but R is false.
(d) If both A and R are false.- Assertion (A) : Sucrose is a reducing sugar.
Reason (R) : Sucrose contains free ketose group. - Assertion (A) : Saturated fatty acids have higher melting
point then unsaturated fatty acids.
Reason (R) : Saturated fatty acids possess double bonds in
their carbon chains. - Assertion (A) : Aspartate is an acidic amino acid.
Reason (R) : Aspartate is mono-amino dicarboxylic amino
acid. - Assertion (A) : The strands of DNA are complementary to
each other.
Reason (R) : Purine base on one strand pairs with pyrimidine
base on other strand by hydrogen bond. - Assertion (A) : Protein proximity among different species
show evolutionary relationship.
Reason (R) : Closely related species share several common
proteins.
Short Answer Type Questions
- Fill in the blanks:
(a) is the most abundant plant protein of the
whole biosphere.
(b) Deficiency of essential fatty acids causes____.
(c) sugars have a free - CHO or –CO group.
(d) ___ and __ can exist in both open chains
as well as ring forms. - List some of the important functions of lipids.
- Differentiate between purine and pyrimidine.
MPP-4 CLASS XI ANSWER KEY
- (d) 2. (b) 3. (b) 4. (c) 5. (c)
- (c) 7. (c) 8. (c) 9. (b) 10. (b)
- (b) 12. (c) 13. (a) 14. (c) 15. (d)
- (a) 17. (b) 18. (c) 19. (a) 20. (d)
- (c) 22. (c) 23. (d) 24. (b) 25. (b)
- (a) 27. (d) 28. (b) 29. (c) 30. (c)
- (b) 32. (c) 33. (d) 34. (a) 35. (b)
- (a) 37. (b) 38. (b) 39. (c) 40. (a)