NCERT BIOLOGY MOCK TEST 6

🟥 QUESTIONS : 25

🟥 TIME : 15 MINS

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1) Building block of nucleic acid is ...........

A) Nucleotide

B) Nucleoside

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2) Biologists describes the protein structure at ________?

A) 4 levels

B) 2 levels

C) 6 levels

D) 3 levels

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3) In the primary structure of the protein the left end is represented by ____?

A) First amino acid

B) Last amino acid

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4) Biomolecules are present in certain concentrations expressed as______?

A) Moles/cell

B) mmol/Litre

C) Mols/litre

D) All of these

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5) Biosynthetic pathways is also called _____?

A) Anabolic pathways

B) Catalytic pathways

C) Both anabolic and catabolic pathways

D) Catabolic pathways

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6) Protein with catalytic power is named ______?

A) Enzymes

B) Nucleic acids

C) Amino acids

D) Ribosome

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7) The bond between phosphate and hydroxyl group of sugar is called______?

A) Peptide bond

B) Ester bond

C) Glycosidic bond

D) Hydrogen bond

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8) Adult hemoglobin consists of four subunit of these are identical to each other that are the 4 units ______?

A) 2 alpha type and 2 beta type

B) 1 alpha type and 3 beta type

C) 3 alpha and 1 beta

D) 1 beta ans 1 alpha type

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9) Which of the following structure is absolute necessary for many biological activities of the protein ?

A) Primary

B) Secondary

C) Tertiary

D) All are absolute Necessary

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10) Enzymes can have ?

A) Primary structure

B) Secondary structure

C) Tertiary structure

D) All of the these

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11) The cofactor that associates with the apoenzyme only during course of Catalysis are called ______ ?

A) Cofactor

B) Coenzyme

C) Metal ions

D) Prosthetic group

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12) Non protein constituent which bound to enzymes catalytically more active are called ?

A) Cofactor

B) Co ions

C) Inhibitor

D) Competitive inhibitor

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13) Enzyme Carbonic anhydrase is present in _____ ?

A) Nucleus

B) Cell wall

C) Cytoplasm

D) Cell Membrane

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14) An example of protein with quaternary structure is ____ ?

A) Myoglobin

B) Hemoglobin

C) Keratin

D) All of above

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15) A secondary metabolite that is alkaloid in nature is _______ ?

A) Codeine

B) Anthrocyanin

C) Gum

D) Abrin

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16) Which one of the following statements is correct with respect to immunity ?

A) Rejection of a kidney graft is the function of B-lymphocytes

B) Preformed antibodies need to the injected to treat the bite by a viper snake

C) The antibodies against small pox pathogen are produced by T-lymphocytes

D) Antibodies are protein molecules, each of which has four light chains

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17) Apporoxima 97% O2 absorbed by blood is transported to the body tissue ?

A) By RBC

B) Through Plasma

C) As Bicarbonate ions

D) All of these

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18) Nearly 70% CO2 absorbed by blood will be transported to the lungs ?

A) By RBC

B) By Plasma

C) As Bicarbonate ions

D) As carbamino haemoglobin

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19) Haemoglobin is a ___________ coloured ________ containing pigment ?

A) Orange , Cu

B) Red , Fe

C) Pink , Fe

D) Red , Cu

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20) How many maximum molecules of O2 will be carry by 4 haemoglobin molecule ?

A) 1

B) 6

C) 16

D) 9

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21) Oxygen Hb dissociation curve is ?

A) Hyperbola

B) Sigmoid

C) Parabola

D) U shaped

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22) Every 500 ml of oxygenated blood can deliver around _________ of O2 to the tissue ?

A) 15 ml

B) 25 ml

C) 50 ml

D) 100 ml

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23) Binding of CO2 with Hb more in tissue when ?

A) pCO2 is high & pO2 is low

B) pCO2 is high & pO2 is high

C) pCO2 is low & pO2 is high

D) pCO2 is low & pO2 is low

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24) Which is a major factor which could affect the binding of CO2 with Hb ?

A) pCO2

B) pO2

C) H+ concentration

D) Temperature

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25) Enzyme , Carbonic anhydrase is present in ____ ?

A) RBC & Plasma

B) Bicarbonate

C) Plasma

D) RBC

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NCERT BIOLOGY MOCK TEST 6

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