Q.1.
Which one of the following statement about amino acid is incorrect?
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0%
a) They are classified on the basis of the 'R' group
-
100%
b) The structure of almost all amino acids are similar except their 'R' group
-
0%
c) All protein molecules are a heteropolymer of amino acid
-
0%
d) They are very important compounds of cytoplasm
Q.2.
Co-enzyme means .... ... [B.H.U. 1997]
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0%
a) Metal
-
0%
b) Vitamin
-
100%
c) Inorganic compound
-
0%
d) a & c both
Q.3.
Which one of the following is the major component of chromosome?
-
100%
a) Nucleic acid
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0%
b) Protein
-
0%
c) Nitrogen base
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0%
d) Lipid
Q.4.
The illustration given below is which nitrogen base:
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0%
a) Guanine
-
0%
b) Cytosine
-
100%
c) Uracil
-
0%
d) Adenine
Q.5.
The rate of most of enzyme catalyzed reaction changes with pH as the pH Increases this rate?
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0%
a) Reaches a maximum
-
100%
b) Reaches a minimum
-
0%
c) Decreases
-
0%
d) Increases
Q.6.
which enzyme would change glucose – 6 phosphate to fructose – 6 phosphate?
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50%
a) Transferase
-
50%
b) Isomerase
-
0%
c) Lyases
-
0%
d) glucose phosphatase
Q.7.
A non-protein component of enzyme is called?
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0%
a) Co-factor
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0%
b) Activator
-
100%
c) Co-enzyme
-
0%
d) Inhibitor
Q.8.
A: Conjugated protein are responsible for movements R: Protein become associated with other than amino acids are known as Conjugated protein
-
0%
a) Both A and R are true and R is the correct explanation of A
-
0%
b) Both A and R are true but R is not the correct explanation of A
-
100%
c) A true R false
-
0%
d) both A and R are false
Q.9.
Enzymes are formed by conjunction of which molecule? [AFMC 1994]
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100%
a) Fatty acid
-
0%
b) glucose
-
0%
c) amino acid
-
0%
d) carbon
Q.10.
Generally protein and carbohydrate components are found in cow milk… [KCET 2005]
-
100%
a) Albumin, Lactose
-
0%
b) Globulin, Casin
-
0%
c) Casin, Lactose
-
0%
d) Casin, Fructose
Q.11.
Maltose are insoluble in... .. [PMT 2000]
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0%
a) Water
-
100%
b) Alcohol
-
0%
c) Acid
-
0%
d) Basic
Q.12.
Which is an organic component found in most cells? [DPMT 2009]
-
100%
a) Glucose
-
0%
b) Lignin
-
0%
c) Sodium chloride
-
0%
d) Oxygen
Q.13.
Given below chemical formula is.... [H PMT 2002] CH3(CH22)7COOH
-
0%
a) α - ketoglutarate
-
0%
b) Oxalosuccinet
-
100%
c) Oleic acid
-
0%
d) Linolic acid.
Q.14.
Chitin is a ... .. [WB JEE 2010]
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100%
a) Polysaccharide
-
0%
b) Nitrogenous polysaccharide
-
0%
c) Lipoprotein
-
0%
d) Protein
Q.15.
The middle Lamella is made up of... .. [CBSE AIPMT 2009]
-
0%
a) Muramic acid
-
0%
b) Calcium pectate
-
100%
c) Phosphoglycerol
-
0%
d) Hemicellulose.
Q.16.
In a polysaccharide, the individual monosaccharides are linked by a......
-
50%
a) Glycosidic bond
-
50%
b) Peptide bond
-
0%
c) Ester bond
-
0%
d) Phosphodiester bond
Q.17.
Starch and Cellulose are the compounds made up to many units of ... ..
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0%
a) Simple sugar
-
100%
b) Fatty acid
-
0%
c) Glycerol
-
0%
d) Amino acid
Q.18.
Lipids are insoluble in water because lipid molecules are... .. [CBSE PMT 2002]
-
100%
a) Neutral
-
0%
b) Zwitter ions
-
0%
c) Hydrophobic
-
0%
d) Hydrophillic
Q.19.
Find out the Miss matched pairs:
-
100%
a) Protein - important compounds of nucleus
-
0%
b) Nucleic acid - major components of chromosomes
-
0%
c) Amino acid - an amphoteric compound
-
0%
d) Enzymes - Colloidal catalysts
Q.20.
The illustration given below is which nitrogen base:
-
0%
a) Uracil
-
0%
b) Cytosine
-
0%
c) Thymine
-
0%
d) Ribose
Q.21.
Ribonucleoside formed from ribonucleotide while:
-
0%
a) It made from sugar
-
0%
b) It made from nitrogen base
-
0%
c) It made from phosphate
-
0%
d) a, b, c all above
Q.22.
Nucleic acids were discovered by whom?
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0%
a) Crick
-
0%
b) Wilkinson
-
0%
c) Meischer
-
0%
d) Watson
Q.23.
The DNA stands are antiparallel because of:
-
0%
a) Ester bond
-
0%
b) Phosphodiester bond
-
0%
c) Disulphide bond
-
0%
d) Hydrogen bond
Q.24.
The hydrogen bonds between adenine and guanine are
-
0%
a) 2
-
0%
b) 3
-
0%
c) 1
-
0%
d) 0
Q.25.
The RNA transporting amino acid to the protein synthesizing site known as
-
0%
a) t-RNA
-
0%
b) r-RNA
-
0%
c) m-RNA
-
0%
d) Any one of a, b, c
Q.26.
Which of the following is not true for enzyme
-
0%
a) Water soluble and colloidal in nature
-
0%
b) Lowers the activation energy level
-
0%
c) Used up in the biochemical reaction
-
0%
d) Affected by the change in temperature
Q.27.
Which the following pair regarding to biological importance of carbohydrates is not correctly matched?
-
0%
a) Cellulose → Forms the plant cell wall.
-
0%
b) Glycogen → Reserve food in animals.
-
0%
c) Ribose sugar → Structural components of ATP..
-
0%
d) Galactose → The most widely used in respiration.
Q.28.
Inorganic catalyst recognized what when it attached an enzyme?
-
0%
a) Activator
-
0%
b) Co- enzyme
-
0%
c) Inhibitor
-
0%
d) Apoenzyme
Q.29.
Which one of the following pairs is not correctly matched?
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0%
a) Triose sugar - DHAP.
-
0%
b) Starch - amylase and amyloprectin.
-
0%
c) Phospholipid - plasma membarane.
-
0%
d) Cortisone - sterols.
Q.30.
Which of the following statements are true? P : Those which have molecular weights 596 Dalton are called micromolecules. Q: Those which have molecular weights 1288 Dalton are called macromolecules. R: Lipids have molecular weight more than ten thousand Dalton and above. S: Biomolecules are of three types (i) micromolecules (ii) simply biomolecules and (iii) macromolecules.
-
0%
a) P and Q
-
0%
b) P, Q and R
-
0%
c) R and S
-
0%
d) Q and S.
Q.31.
P : The presence of lipid is inevitable for the activity of glucose phosphatase. Q : Copper is co-factor for the activation of enzymes like phosphatase.
-
0%
a) If both 'A' and 'R' true and 'R' is a correct explanation of’ A’
-
0%
b) If both 'A' and 'R' true and 'R' is not a correct explanation of’A’
-
0%
c) If 'A' is true the 'R' is false
-
0%
d) If 'A' is false the 'R' is true
Q.32.
Which of the following statement regarding the Fatty acid is not correct?
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0%
a) Unsaturated fatty acids are two successive carbon atoms at certain places therein are linked by a double bond.
-
0%
b) Saturated fatty acids are capable of accepting hydrogen or halogen atoms.
-
0%
c) Butyric acid and palmitic acids are Saturated fatty acids
-
0%
d) Crotonic acid and oleic acid are Unsaturated fatty acids.
Q.33.
A : Palmitic acids are long chain unsaturated fatty acid. R : Two successive carbon atoms at certain places there in are linked by double bond.
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0%
a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
-
0%
b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
-
0%
c) Assertion is true but the reason is false.
-
0%
d) Assertion is false but the reason is True
Q.34.
A : Hydrolysis of a molecule of sucrose yields glucose + fructose. R : Hydrolysis of disaccharide yields two molecules of monosaccharide.
-
0%
a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
-
0%
b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
-
0%
c) Assertion is true but the reason is false.
-
0%
d) Assertion is false but the reason is True
Q.35.
A : In the structure of wax one molecule of monohydroxy alcohol. R : Lipids such as wax form a protective layer on the outer surface of the aerial plant organs.
-
0%
a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
-
0%
b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
-
0%
c) Assertion is true but the reason is false.
-
0%
d) Assertion is false but the reason is True
Q.36.
Which of the following group is not organic group? [AIPMT 2010]
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0%
a) Fats, Proteins , Enzymes, Hormones.
-
0%
b) Co-factors, Hormones, Water, Minerals.
-
0%
c) Proteins, Carbohydrates, Nucleic acid, Hormones.
-
0%
d) Proteins, Carbohydrates, Fats, Enzymes.
Q.37.
Which one of the following is incorrect for Protein:
-
0%
a) They transport some nutrients across cell membrane
-
0%
b) They are heteropolymer of amino acids
-
0%
c) They possess C, H, O, N and P in their constitution
-
0%
d) They are very important compounds of cytoplasm
Q.38.
Find out the one group of amino acids which are related with each other:
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0%
a) Valine, Histidine
-
0%
b) Serine, Tyrosine
-
0%
c) Glutamate, Proline
-
0%
d) Lysine, Laucine
Q.39.
Dipeptide means:
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0%
a) Two similar amino acids attached by peptide bond
-
0%
b) Two dissimilar amino acids attached by peptide bond
-
0%
c) Two similar or dissimilar amino acids attached by peptide bond
-
0%
d) Two similar or dissimilar proteins attached by peptide bond
Q.40.
Polypeptide means:
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0%
a) A polypeptide chain is formed by more than two nucleotides
-
0%
b) A polypeptide chains is formed by more than two amino acids
-
0%
c) A polypeptide chains is formed by many similar amino acids
-
0%
d) A polypeptide chain is formed by many similar nucleotides
Q.41.
Which of the following is correct for the quaternary structure of protein?
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0%
a) It represents a three dimensional form of whole protein
-
0%
b) It forms with interaction between different polypeptide Chain.
-
0%
c) a and b both
-
0%
d) It forms the three dimensional arrangement of the atoms within a single polypeptide chain
Q.42.
Which of the following statement is incorrect about immunoglobulin?
-
0%
a) It has the property of immunity
-
0%
b) It consist of more than one polypeptide chain
-
0%
c) It present in blood cell
-
0%
d) b and c both
Q.43.
Which are the structural units of DNA?
-
0%
a) Nitrogen base
-
0%
b) Pentose sugar
-
0%
c) nucleotide
-
0%
d) phosphoric acid
Q.44.
What is Ribonucleoside?
-
0%
a) Ribose + Nucleic acid
-
0%
b) Ribose + Nitrogen base
-
0%
c) Ribose + Phosphate
-
0%
d) Ribose + Adenine
Q.45.
A DNA stand is directly involved in the synthesis of all the following except –
-
0%
a) Another DNA Stand
-
0%
b) t- RNA
-
0%
c) m-RNA
-
0%
d) Protein
Q.46.
Nucleic acids are polymers of which molecules?
-
0%
a) Nucleosides
-
0%
b) Nucleotides
-
0%
c) Polypeptides
-
0%
d) polysomes
Q.47.
Which of the following is correct?
-
0%
a) A=T
-
0%
b) C=G
-
0%
c) G=A
-
0%
d) A=C
Q.48.
Which of the following ratio is constant in the DNA of all the species?
-
0%
a) A+U / T+C
-
0%
b) A+G/ C+T
-
0%
c) A+C / T+G
-
0%
d) A+T / C+G
Q.49.
Which is longest of all RNA?
-
0%
a) m-RNA
-
0%
b) t-RNA
-
0%
c) r-RNA
-
0%
d) None above
Q.50.
Which one is known as adapter molecule?
-
0%
a) DNA
-
0%
b) m-RNA
-
0%
c) t-RNA
-
0%
d) r-RNA