← Back to Zoology

Biomolecules

194 Questions Start Allen Test
All Exams Allen
Q101 Allen PYQ MCQ
Read the following statements on lipids and find out correct set of statements:
(a) Lecithin found in the plasma membrane is a glycolipid
(b) Saturated fatty acids possess one or more c = c bonds
(c) Gingelly oil has lower melting point, hence remains as oil in winter
(d) Lipids are generally insoluble in water but soluble in some organic solvents
(e) When fatty acid is esterified with glycerol, monoglycerides are formed
Choose the correct answer from the options given below:
A.
(a), (d) and (e) only
B.
(c), (d) and (e) only
C.
(a), (b) and (d) only
D.
(a), (b) and (c) only
Q102 Allen PYQ MCQ
A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is ${ \sf C } _ { 6 } { \sf H } _ { 1 2 } 0 _ { 6 }$ then what is the formula for maltose ?
A.
$\mathsf { C } _ { 1 2 } \mathsf { H } _ { 2 4 } \mathsf { O } _ { 1 2 }$
B.
$\mathsf { C } _ { 1 2 } \mathsf { H } _ { 2 2 } \mathsf { O } _ { 1 1 }$
C.
$\mathsf C _ { 1 2 } \mathsf H _ { 2 4 } \mathsf O _ { 1 1 }$
D.
${ \mathsf { C } } _ { 1 2 } { \mathsf { H } } _ { 2 0 } { \mathsf { O } } _ { 1 0 }$
Q103 Allen PYQ Match the Columns
Match Column-I Column-II :
Choose the correct answer from the options given below :
Column-IColumn-II
(A)Adenine
(B)Anthocyanin
(C)Chitin
(D)Codeine
(I)Pigment
(II)Polysaccharide
(III)Alkaloid
(IV)Purine
A.
A-IV, B-I, C-II, D-III
B.
A-IV, B-III, C-II, D-I
C.
A-III, B-I, C-IV, D-II
D.
A-I, B-IV, C-III, D-II
Q104 Allen PYQ MCQ
Primary proteins are also called as polypeptides because :
A.
They are linear chains
B.
They are polymers of peptide monomers
C.
Successive amino acids are joined by peptide bonds
D.
They can assume many conformations
Q105 Allen PYQ MCQ
In the enzyme which catalyses the breakdown of: Hā‚‚Oā‚‚ ā†’ Hā‚‚O + Oā‚‚ the prosthetic group is :
A.
Nicotinamide adenine dinucleotide
B.
Haem
C.
Zinc
D.
Niacin
Q106 Allen PYQ MCQ
Given below are two statements: Statement-I : Amino acids have a property of ionizable nature of $ā€“NH_2$ and ā€“COOH groups, hence have different structures at different pH. Statement-II : Amino acids can exist as Zwitterionic form at acidic and basic pH. In the light of the above statements, choose the most appropriate answer from the options given below:
A.
Both Statement-I and Statement-II are correct
B.
Both Statement-I and Statement-II are Incorrect
C.
Statement-I is correct but Statement-II is incorrect
D.
Statement-I is incorrect but Statement-II is correct
Q107 Allen PYQ MCQ
Cellulose does not form blue colour with Iodine because
A.
It is a helical molecule.
B.
It does not contain complex helices and hence cannot hold iodine molecules.
C.
It breaks down when iodine reacts with it.
D.
It is a disaccharide.
Q108 Allen PYQ MCQ
Malonate inhibits the growth of pathogenic bacteria by inhibiting the activity of
A.
Amylase
B.
Lipase
C.
Dinitrogenase
D.
Succinic dehydrogenase
Q109 Allen PYQ MCQ
Given below are two statements : Statement-I : A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal). Statement-II : Adult human haemoglobin, consists of 4 subunits (two subunits of Ī± type and two subunits Ī² type.) In the light of the above statements, choose the correct answer from the options given below :
A.
Both Statement I and Statement II are false.
B.
Statement I is true but Statement II is false.
C.
Statement I is false but Statement II is true.
D.
Both Statement I and Statement II are true.
Q110 Allen PYQ MCQ
Given below are two statements : Statement-I : Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat. Statement-II : When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. In the light of the above statements, choose the correct answer from the options given below :
A.
Both Statement I and Statement II are false.
B.
Statement I is true but Statement II is false.
C.
Statement I is false but Statement II is true.
D.
Both Statement I and Statement II are true.
Q111 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(A)Protein
(B)Unsaturated fatty acid
(C)Nucleic acid
(D)Polysaccharide
(I)C=C double bonds
(II)Phosphodiester bond
(III)Glycosidic bonds
(IV)Peptide bonds
A.
A-II, B-I, C-IV, D-III
B.
A-IV, B-III, C-I, D-II
C.
A-IV,B-I, C-II, D-III
D.
A-I, B-IV, C-III, D-II
Q112 Allen PYQ MCQ
Inulin is a polymer of :
A.
Fructose
B.
Galactose
C.
Amino acids
D.
Glucose
Q113 Allen PYQ MCQ
Which of the following is not a secondary metabolite?
A.
Curcumin
B.
Morphine
C.
Anthocyanin
D.
Lecithin
Q114 Allen PYQ Match the Columns
Match Column-I Column-II. Choose the correct answer from the
options given below :
Column-IColumn-II
(A)Terpenoids
(B)Lectins
(C)Alkaloids
(D)Toxins
(I)Codeine
(II)Diterpenes
(III)Ricin
(IV)Concanavalin A
A.
A-II, B-IV, C-III, D-I
B.
A-II, B-I, C-IV, D-III
C.
A-II, B-III, C-I, D-IV
D.
A-II, B-IV, C-I, D-III
Q115 Allen PYQ MCQ
Lecithin, a small molecular weight organic compound found in living tissues, is an example of :
A.
Amino acids
B.
Phospholipids
C.
Glycerides
D.
Carbohydrates
Q116 Allen PYQ MCQ
Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of :
A.
Cofactor inhibition
B.
Feedback inhibition
C.
Competitive inhibition
D.
Enzyme activation
Q117 Allen PYQ Match the Columns
Match Column-I with Column-II. Choose the correct answer from the options given below:
Column-IColumn-II
(A)GLUT-4
(B)Insulin
(C)Trypsin
(D)Collagen
(I)Hormone
(II)Enzyme
(III)Intercellular ground substance
(IV)Enables glucose transport into cells
A.
Aā€“IV, Bā€“I, Cā€“II, Dā€“III
B.
Aā€“I, Bā€“II, Cā€“III, Dā€“IV
C.
Aā€“II, Bā€“III, Cā€“IV, Dā€“I
D.
Aā€“III, Bā€“IV, Cā€“I, Dā€“II
Q118 Allen PYQ MCQ
Regarding catalytic cycle of an enzyme action, select the correct sequential steps : A. Substrate enzyme complex formation. B. Free enzyme ready to bind with another substrate. C. Release of products. D. Chemical bonds of the substrate broken E. Substrate binding to active site. Choose the correct answer from the options given below:
A.
E, A, D, C, B
B.
A, E, B, D, C
C.
B, A, C, D, E
D.
E, D, C, B, A
Q119 Allen PYQ Match the Columns
Match Column I with Column-II : Choose the correct answer from the options given below:
Column-IColumn-II
(A)Lipase
(B)Nuclease
(C)Protease
(D)Amylase
(I)Peptide bond
(II)Ester bond
(III)Glycosidic bond
(IV)Phosphodiester bond
A.
A-IV, B-II, C-III, D-I
B.
A-III, B-II, C-I, D-IV
C.
A-II, B-IV, C-I, D-III
D.
A-IV, B-I, C-III, D-II
Q120 Allen PYQ MCQ
Ligases is a class of enzymes responsible for catalysing the linking together of two compounds. Which of the following bonds is not catalysed by it ?
A.
Cā€“C
B.
P ā€“ O
C.
C ā€“ O
D.
C ā€“ N
Q121 Allen PYQ MCQ
Which of the following are not fatty acids ? A. Glutamic acid B. Arachidonic acid C. Palmitic acid D. Lecithin E. Aspartic acid Choose the correct answer from the options given below :
A.
C, D and E only
B.
A and B only
C.
A, D and E only
D.
B and C only
Q122 Allen PYQ MCQ
Which of the following graphs depicts the effect of substrate concentration on velocity of enzyme catalysed reaction ?
A.
B.
C.
D.
Q123 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(A)Primary structure of protein
(B)Secondary structure of protein
(C)Tertiary structure of protein
(D)Quaternary structure of protein
(I)Human haemoglobin
(II)Disulphide bonds
(III)Polypeptide chain
(IV)Alpha helix and Ī² sheet
A.
A-III, B-IV, C-II, D-I
B.
A-III, B-II, C-I, D -IV
C.
A-I, B-III, C-II, D-IV
D.
A-IV, B-III, C-II, D-I
Q124 Allen (A) NCERT BASED QUESTIONS MCQ
Which of the following compound is present in acid soluble pool when we analyse chemical composition?
A.
Protein
B.
Lipid
C.
Glucose
D.
Carotenoid
Q125 Allen (A) NCERT BASED QUESTIONS MCQ
Which of the following elements present most abundantly on earth crust?
A.
Carbon
B.
Hydrogen
C.
Oxygen
D.
Silicon