Q.1
which kind of arrangement lies in the two polynucleotide chain of DNA?
  • a) Antiparallel and complementary
  • b) parallel and complementary
  • c) Independent
  • d) None above
Q.2
Enzymes are present in which parts of plant?
  • a) Only in leaves
  • b) Only in fruits
  • c) In apical meristem of root and shoot
  • d) in all the living cell of plant body
Q.3
A temperature change from 30o C to 50o C the rate of enzyme actively will:
  • a) Increase
  • b) Decrease
  • c) First increase and then decrease
  • d) First decrease and then increase
Q.4
Which one of the following chemical is classified as an enzyme?
  • a) Try glyceride
  • b) Cellulose
  • c) Galactose
  • d) Sucrase
Q.5
The product is realized from which site of the enzyme?
  • a) Simple site
  • b) active site
  • c) Complex site
  • d) Inactive site
Q.6
Which one is a molecule of ATP? [C.B.S.C. PMT 2000]
  • a) Nucleosome
  • b) Nucleoside
  • c) Nucleotide
  • d) Deoxyribose
Q.7
t-RNA is a polymer of: .... [MP PMT 1997]
  • a) Deoxyribonucleoside
  • b) Ribonucleoside
  • c) Ribonucleotide
  • d) Deoxyribotide
Q.8
Enzyme speed up rate of reaction by ... ... [C.B.S.E. 2000]
  • a) Combining with product
  • b) Forming reaction product complex
  • c) Changing equilibrium of reaction
  • d) Covering activation energy
Q.9
Which of the following sets is not co enzyme?
  • a) NAD, FAD, ATP
  • b) NAD, NHDP,FMN
  • c) Fe, Cu, Zn
  • d) V, Ca, Mg
Q.10
A: Each enzyme has an effect on a particular reaction R: Glucose and galactose is the product of hydrolysis of lactose in presence of The lactose
  • a) Both A & R are true and R is the correct explanation of A
  • b) Both A & R are true but R is not the correct explanation of A
  • c) A true R false
  • d) both A & R are false
Q.11
Which of the following pairs is not correctly matched?
  • a) Butter - Glycerol + 3 Fatty acids.
  • b) Waxes - Monohydroxy alcohol + 1 Fatty acid.
  • c) Cortisone - Present of -COOH or >C=O group.
  • d) Glycolipid - Glycerol + Lipid.
Q.12
hich of the following statement regarding to Amylase is not correct?
  • a) Unbranched polysaccharide chains made up of glucose units.
  • b) Amylase occur in the constitution of glycogen.
  • c) Amylase occur in more amount in starch.
  • d) None of these.
Q.13
P : In animal the food is stored as glycogen Q : Amylase and amylopectin are occurring in the constitution of glycogen.
  • a) If both 'P' and 'Q' true and 'Q' is a correct explanation of’ P’
  • b) If both 'P' and 'Q' true and 'Q' is not a correct explanation of’ P’
  • c) If P is true the Q is false
  • d) If P is false the Q is true
Q.14
Specify the name of the fatty acids of the following structure in a given figure?
  • a) Butyric acid
  • b) Palmitic acid
  • c) Stearic acid
  • d) Oleic acid
Q.15
A : Cholesterol do not contain Fatty acids. R : Cholesterol do not contain Carboxyl (- COOH) or Keto (>C=O) group.
  • a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
  • b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
  • c) Assertion is true but the reason is false.
  • d) Assertion is false but the reason is True
Q.16
A : Complex lipid which contain a non lipid constituent in addition ti alcohol and fatty acids. R : Phospholipid and Glycolipid are example of complex lipid
  • a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
  • b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
  • c) Assertion is true but the reason is false.
  • d) Assertion is false but the reason is True
Q.17
A: The subcutaneous fat layer under the skin, which maintains body temperature. R : Lipid form an insulating layer.
  • a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
  • b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
  • c) Assertion is true but the reason is false.
  • d) Assertion is false but the reason is True
Q.18
Which of the following are linked together to form Proteins ?
  • a) Phosphate
  • b) Nitrogen base
  • c) Sugar
  • d) Amino acids
Q.19
At high temperature proteins are:
  • a) Destroyed
  • b) inactive
  • c) denatured
  • d) a or b
Q.20
Aspartic acid and lysine are linkage each other with which bond:
  • a) Ester bond
  • b) Glycoside bond
  • c) Phosphodiaster bond
  • d) Peptide bond
Q.21
Which bimolecular fights against infectious organisms?
  • a) Lipid
  • b) Nucleic acid
  • c) Protein
  • d) Enzyme
Q.22
End of every polypeptide chain is known as:
  • a) Template
  • b) Signal
  • c) Antenna
  • d) Terminal
Q.23
What is the shape of the three dimensional structure of protein?
  • a) Flat sheet like
  • b) Globular
  • c) Fibrous
  • d) b or c
Q.24
What does the following diagram show?
unit-3_ch-5_que_no-350_img_no1.png
  • a) Quaternary structure of protein
  • b) polypeptide chain
  • c) Molecule structure of protein
  • d) Secondary structure of protein
Q.25
Nuclein separated in to which components?
  • a) Protein + chromosome
  • b) Protein + Nucleic acid
  • c) Nucleic acid + nitrogen base
  • d) Nuceicoside + Nucleotide
Q.26
Nucleic acids means
  • a) A major components of chromosomes
  • b) Polynucleotide of structural units known as nucleotides
  • c) Small gene carrying bodies in the nuclei of complex cells
  • d) Both a & b
Q.27
Which one is not a polymer?
  • a) ATP
  • b) Hemoglobin
  • c) Nucleotide
  • d) Enzyme
Q.28
The following diagram represents the nitrogenous bases of nucleic acid Molecules Identify the correct combination:
unit-3_ch-5_que_no-354_img_no1.png
unit-3_ch-5_que_no-354_img_no2.png
  • a) A= Guanine , B= Uracil
  • b) A= Adenine , B= Thymine
  • c) A= Cytosine , B= Adenine
  • d) A= thymine , B= Guanine
Q.29
DNA is localized in which cell organelle?
  • a) Vacuoles
  • b) Lysosomes
  • c) Golgi apparatus
  • d) Nucleus, mitochondria, chloroplast
Q.30
Chemically DNA differs from RNA by:
  • a) Thymine and deoxyribose present in DNA and Uracil and ribose in RNA
  • b) Uracil and deoxyribose in DNA and thymine and ribose in RNA
  • c) Deoxyribose in DNA and ribose in RNA
  • d) Two nucleotide in DNA and one nucleotide in RNA
Q.31
The scientists who discovered the structure of DNA molecule
  • a) Miller and mandal
  • b) Khorana and Nirenberg
  • c) Calvin and Wilkinson
  • d) Waston and Crick
Q.32
Which of the following is incorrect?
  • a) m-RNA is degreased after its function is over
  • b) t-RNA are synthesized by m-RNA
  • c) r-RNA is localized in the ribosome
  • d) m-RNA carries genetic code in to cytoplasm
Q.33
Which are proportionally more compounds in all RNA’s?
  • a) m-RNA
  • b) t-RNA
  • c) r-RNA
  • d) a, b, c all
Q.34
What is an apoenzyme?
  • a) Protein
  • b) Amino acid
  • c) metallic ions
  • d) Carbohydrates
Q.35
An enzyme brings about
  • a) Activation energy level
  • b) Increase in reaction time
  • c) Decrease in activation energy level
  • d) all above
Q.36
At which place the substrate combines with the enzymes:
  • a) Active site
  • b) inactive site
  • c) Common site
  • d) Gap site
Q.37
Match the terms in columns - I with suitable terms in column - II :
Column I Column II
P, Glucose i. (c6H10O5)n
Q, Maltose ii. R-COOH
R , Glycogen iii. C12H22O11
S , Fatty acids iv. C6H12O6
  • a) P= iv; Q =i; R= iii; S= ii
  • b) P =iv; Q =iii; R =i; S= ii
  • c) P= iii; Q =iv; R =ii; S =i
  • d) P =iv; Q =iii; R =i; S= ii
Q.38
atch the terms in column-I with suitable terms in column-II.
Column I Column II
P Butyric acid i Long chain Unsaturated fatty acid
Q Stearic acid ii Short chain Unsaturated fatty acid
R Oleic acid iii Short chain Saturated fatty acid
S Crotonic acid iv Long chain Saturated fatty acid
  • a) P= iii; Q= iv; R= i; S= ii
  • b) P= iii; Q= i; R=iv; S= ii
  • c) P= iv; Q= iii; R= i; S= ii
  • d) P= iv; Q= iii; R= ii; S= I
Q.39
Lipids are relatively insoluble in ... ...
  • a) Chloroform
  • b) Water
  • c) Benzene
  • d) Ether.
Q.40
P : Steroids do not contain Fatty acids. Q : In the structure of wax an alcohol molecule is one monohydroxy alcohol
  • a) If both 'P' and 'Q' true and 'Q' is a correct explanation of 'P'
  • b) If both 'P' and 'Q' true and 'Q' is not a correct explanation of 'P'
  • c) If P is true the Q is false
  • d) If P is false the Q is true
Q.41
A : Lipids are insoluble in water. R : In structure of lipid the number of H atoms is much more than that of O.
  • a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
  • b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion
  • c) Assertion is true but the reason is false.
  • d) Assertion is false but the reason is True
Q.42
A : Oleic acid contain 18 carbon atoms and two successive carbon atoms at certain places therein are linked by double bond. R : Oleic acid are long chain unsaturated fatty acid.
  • a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
  • b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
  • c) Assertion is true but the reason is false.
  • d) Assertion is false but the reason is True
Q.43
Find out the correct combination ... .. [GSEB 2011] i) Triose sugar - Ribose. ii) Starch - amylase and amylopectin iii) Plasma membrane - phospholipid iv) Melanin - sterols v) Pituitary hormones - peptide.
  • a) Only ii, iii and iv
  • b) Only I, ii and iii
  • c) Only I and iii
  • d) Only ii, iii and v
Q.44
Full form of RUBISCO is:
  • a) Ribulose Bisulphate Carboxylase Oxygenare
  • b) Ribuose Biphosphate Carboxylase Oxygenare
  • c) Ribuose Bisulphate Carboxylase Oxygenare
  • d) Ribulose Biphosphate Carboxylase Oxygenare
Q.45
Which one of the following pairs is correctly matched?
  • d) Glycogen → Forms the plant cell wall.
  • a) Fats → Long saturated Fatty acidss chain.
  • b) Derivatives of Lipid → Vitamins A, D, E.
  • c) Deoxyribose → RNA.
Q.46
P : Cortisone molecules which contain only Carboxyl (-COOH) or keto C>C=O group. Q : Cortisone do not contain Fatty acids.
  • a) If both 'P' and 'Q' true and 'Q' is a correct explanation of 'P'
  • b) If both 'P' and 'Q' true and 'Q' is not a correct explanation of 'P'
  • c) If P is true the Q is false
  • d) If P is false the Q is true
Q.47
The chemical formula of starch is ... .. [RPMT 2002]
  • a) (C6H10O5)n
  • b) (C6H12O6)n
  • c) C12H22O11
  • d) CH3COOH
Q.48
Total numbers of amino acids are involved in protein synthesis in Plants:
  • a) 10
  • b) 22
  • c) 13
  • d) 20
Q.49
The structure of protein can be denatured by
  • a) At high temperature
  • b) In dilute solution of acid
  • c) In the presence of CO2
  • d) a, b, c all
Q.50
Match the terms in column-I with suitable terms in column-II.
Column I Column II
P Glucose i Stored food in plants
Q Cellulose ii Reserve food in animals
R Starch iii The plant cell wall
S Glycogen iv Most widely used in respiration
  • a) P= iv; Q= iii; R= ii; S= i
  • b) P= iv; Q= iii; R= i; S= ii
  • c) P= iii; Q=i; R= iv; S= ii
  • d) P=iii; Q= iv; R= ii; S= i
0 h : 0 m : 1 s