The structure of the protein that is absolutely necessary for its biological activity is
Most abundant protein in the whole of the biosphere is:
Statement A: The activity of an enzyme is sensitive to the presence of specific chemicals that bind to the enzyme. Statement B: When the binding of the chemical shuts off enzyme activity, the process is called inhibition.
Among the following, choose the biomolecules that have glycosidic bonds. A. Proteins B. Nucleoside C. Polysaccharides D. Nucleotides
Which of the following bonds are formed by removal of water molecule? I. Peptide bond II. Glycosidic bond III. Phosphodiester bond. IV. Hydrogen bonds
Which one of the following statements is incorrect?
Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their :
Identify the amino acid whose structure is given below.
Identify the functional group generally not seen in sugars.
Find out the wrongly matched pair.
Nucleotides are for nucleic acids and the following are for proteins.
GLUT-4 is
Choose the incorrect statement from the following.
Select the INCORRET statement from the following.
The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following options is correct?
Which of the following statements about enzymes is wrong?
Match the following List – I List – II A) Polymer of Fructose I) Ribonucleic acid B) Polymer of Glucose II) Insulin C) Polymer of amino acids III) Inulin D) Polymer of nucleotides IV) Amylopectin
A non-proteinaceous enzyme is
The two functional groups characteristic of sugars are
Study the following graph related concept of activation energy in a chemical reaction and identify A, B, C and D.
Identify the substances having glycosidic bond and peptide bond, respectively in their structure :
“Ramachandran plot” is used to confirm the structure of :-
Match the following with respect to classes of enzymes mode of their action. List – I List – II A) Class 2 I) Transfer of groups within the substrate B) Class 5 II) Breakdown of substrate by adding water C) Class 3 III) Removal of groups from substrate without involvement of water D) Class 4 IV) Transfer of groups from one substrate to other
Human hemoglobin has
Identify the neutral amino acid:
The bonds present in between amino acids in a polypeptide chain and monomers in a polysaccharide are:
Statement A: Non-protein constituents called cofactors are bound to the enzyme to make the enzyme catalytically active. Statement B: Catalytic activity is lost when the co-factor is removed from the enzyme.
Metal ion forming coordination bonds in active site carboxypeptidase and its substrate is
The water soluble polysaccharide used to measure the glomerular filtration rate is formed by the polymerization of
The acid used in the chemical analysis of living tissue is
Starch and glycogen differ in
Which of the following secondary metabolites are used as pigments? (I) Carotenoids (II) Ricin (III) Morphine (IV) Anthocyanin (V) Abrin. (VI) Rubber
Read the given statements and select the correct option. (I) Fructose is the sweetest sugar. (II) The right end of a polysaccharide chain is the reducing end, while the left end is the non- reducing end (III) Cellulose can hold iodine molecules in it’s helical portion and gives blue colour with it. (IV) Plant cell walls are made of chitin.
The K m value of the enzyme is the value of the substrate concentration at which the reaction reaches to
Choose the biomacromolecule made of fructose units.
Match the following and choose the correct match. List – I List – II A) Trypsin i) Transporter of glucose B) Insulin ii) Enzyme C) Collagen iii) Intercellular ground substance of animal tissues D) GLUT – 4 iv) Hormone A B C D 1. ii iv iii i 2. iii iv ii i 3. ii iv i iii 4. iv ii iii i
Choose the correct pair.
Lipids with more complex structure are present in
A nucleoside has
Which is the biomolecule that acts as genetic material of organisms that follow cell theory?
Choose the correct statement.
Number of carbon atoms in the fatty acid palmitic acid is
Arachidonic acid is
Identify the wrong statement.
Exoskeletons of crabs and lobsters are made up of-
Which of the following is a protein in nature?
Read the following statements. Statement A: Lecithin is a component of cell membrane. Statement B: Adenine contains one heterocyclic ring.
Arachidonic acid is-
Choose the incorrect statement with respect to collagen.
Choose the correct statement.
Arrange the following w.r.t. increasing order of complexity. Adenine, Adenylic acid, Adenosine
Read the following statements. Statement A: Amino acids contain α – carbon in their structure. Statement B: Lysine is a basic amino acid
The component of enzyme that can form coordinate bonds with the substrate is
Which is not a component of nucleotide?
Choose the incorrect statement
Choose the incorrect statement
Cotton fibres are made of
The most abundant lipid in the membrane of eukaryotes and the most abundant protein in the whole biosphere are:
Nucleic acids are polymers of:
Active sites are a part of the following
Find the incorrect match.
Vincristine and curcumin belong to the category of:
Select the option with wrong statement(s) w.r.t. substituted pyrimidines. (a) They include uracil, cytosine, thiamine (b) They are heterocyclic compounds (c) All are monomers for only RNA (d) They are micromolecules obtained in acid soluble fraction
Match the amino acid with its correct R group. Amino acid R-group P Cysteine I. – CH 2 OH Q Serine II. – CH 2 – CH 2 – COOH R Glutamic acid III Aromatic group S Tyrosine IV) – CH 2 – SH
Which among the following secondary metabolites is a lectin?
The given diagram is of adenine. What group should be present in the spot marked X?
The essential chemical components of many coenzymes are
Macromolecule chitin is
A phosphoglyceride is always made up of
Transition state structure of the substrate formed during a enzymatic reaction is
The chitinous exoskeleton of arthropods is formed by the polymerisation of
Select the option which is not correct with respect to enzyme action.
Which one of the following is a non – reducing carbohydrate?
Uridine, present only in RNA is a
Which of the following biomolecules does have a phosphodiester bond?
Ricin is a secondary metabolite belongs to the following group.
A typical fat molecule is made up of
Water soluble pigments found in plant cell vacuoles are
Which one of the following statements is wrong?
Which of the following is the least likely to be involved in stabilising the three-dimensional folding of most proteins?
Which of the following describes the given graph correctly?
Which of the following statements is correct with reference to enzymes?
Choose the biomolecule that cannot be involved in the formation of biopolymers.
Which of the following glucose transporters is insulin dependent?
Concanavalin A is
Consider the following statements . (A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group. (B) A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme. Select the correct option.
Carboxypeptidases belong to the following class according to classification of Enzymes.
The units of nucleic acids and units of polysaccharides are linked respectively by
Match the following List – I List – II A) Polymer of Fructose i) Ribonucleic acid B) Polymer of Glucose ii) Insulin C) Polymer of amino acids iii) Inulin D) Polymer of nucleotides iv) Amylopectin
Choose the incorrect statement with respect to enzymes.
Water is not removed during the formation of
Statement A: The difference in energy content of substrate at ground state and energy content of the substrate at transition state is called as activation energy. Statement B: Substrate has higher energy at transition state than at ground state.
The organic non-protein part of an enzyme tightly bond to the active site is called as
The non-proteinaceous enzymes are chemically
Arrange the following steps of enzyme catalytic cycle in correct sequence. A. Alteration of shape of enzyme for fitting the substrate more tightly into the active site. B. Diffusion of substrate towards the active site of enzyme. C. Breaking of chemical bonds of the substrate. D. Release of products of reaction E. Binding of substrate to the active site of enzyme.
GLUT – 4 is
GLUT – 4 is
Match the following List – I List – II A) Aromatic amino acid I) Lysine B) Neutral amino acid II) Aspartic acid C) Acidic amino acid III) Valine D) Basic amino acid IV) Phenyl alanine
Match the contents of List I with the ones in List II and choose the correct match. List – I List – II A) Hydrolase I) Kinase B) Ligase II) Mutase C) Isomerase III) Synthetase D) Transferase IV) Restriction endonuclease
Which one of the following is the most abundant protein in the animals ?
Identify the basic amino acid from the following.
Match the following : Column I Column II (a) Inhibitor of catalytic activity (i) Ricin (b) Possess peptide bonds (ii) Malonate (c) Cell wall material in fungi (iii) Chitin (d) Secondary metabolite (iv) Collagen Choose the correct option from the following :
Choose the correct statement with respect to holoenzyme.
Identify the statement which is incorrect.
Which of the following organic compounds is the main constituent of lecithin?
Prosthetic groups differ from co-enzymes in that :-
Which of the following statements regarding enzyme inhibition is correct ?
A fat molecule is formed from :
Which of the following enzymes is not protein ?
Gingely oil is
Malonic acid is a competitive inhibitor of an enzyme of Krebs cycle. Malonic acid structurally resembles one of the following.
The general chemical formula for an amino acid is
Identify the substances having phosphodiester bond and disulphide bond, respectively in their structure:
Which one of the following substances is found in plants only?
Inhibition of succinic dehydrogenase is done by:
Disulphide bonds are present in:
The substances found in blood that is responsible for humoral immune response is structurally a:
Coenzyme nicotinamide adenine dinucleotide (NAD) contains:
All of the following contain heterocyclic nitrogenous base except:
Read the following statements : (A) There is no uncatalyzed metabolic conversion in living system. (B) Isolated metabolic reactions in vitro are non-living things. (C) There are thousands of metabolic reactions occurring simultaneously inside all living organisms. Select the correct option :
The bond formed between two carbon atoms of two adjacent monosaccharides is:
Adult human haemoglobin consists of protein having
The curve given below shows enzymatic activity in relation to some conditions (pH, temperature etc.). What do the two axes (X and Y) represents?
Chemical nature of ribozyme is
Identify the wrong statement.
The cofactor of carboxypeptidases is
K m value is defined as:
In secondary structure of proteins:
Any given nucleoside lacks
Which of the following is an incorrect statement with respect to Enzymes?
Select the correct statement from the following.
Inhibition of succinate dehydrogenase activity by malonate is an example for
Identify the type of bond primarily responsible for stabilization of secondary structure of proteins.
Identify the incorrect statement.
The rate of transpiration is measured by:
Statement A: There are many types of amino acids in a cell. Statement B: Amino acids vary in the nature of R group.
Transferases are the enzymes which transfer groups from one substrate to other except the following.
Match the column I with column-II and choose the correct option. Column-I Column-II A Toxin (I) Vinblastin B Drugs (II) Abrin, ricin C Polymeric substances (III) Rubber, cellulose D Essential oils (IV) Lemon grass oil.
Which of the following is correct with respect to the compounds in acid-soluble pool?
Which of the following polysaccharides are made up of glucose monomers?
Select the incorrect match.
Identify an essential amino acid from the following.
Identify the given molecule and choose the correct option.
Identify the wrong statement.
Which of the following is an incorrect statement ?
Purines are nine-membered double-ring nitrogenous bases with nitrogen atoms at
Consider the following chemical structure and choose the correct option to identify it.
The distance between two nucleotides in a polynucleotide strand of DNA is
Which of the following is a correct statement ?
Which of the following is a correct statement ?
Triglycerides consist of
Identify the wrong statement with respect to the structure of DNA
Which of the following different in RNA and DNA ?
Which of the following is an aromatic amino acid?
Choose the incorrect statement
Competitive inhibition is observed in all except:
Select the incorrect match, w.r.t. structure of the amino acid:
Identify the wrong statement.
Statement A: Malonic acid is competitive inhibitor for the activity of succinic dehydrogenase. Statement B: Malonic acid structurally resembles succinic dehydrogenase.
Which of the following is a cofactor for the proteolytic enzyme carboxypeptidase?
What happens to K m in presence of competitive inhibitor?
Which among the following is not an alkaloid?
Which statement is incorrect about coenzyme?
Which of the following is wrongly matched?
Identify the incorrect match.
Identify the incorrect match.
Match the columns: Column I (Component) Column II (% of the total cellular mass) (a) Water (i) 5-7% (b) Lipids (ii) 10-15% (c) Nucleic acids (iii) 2% (d) Proteins (iv) 70-90%
Among the following choose the biomacromolecules that are present in the form of branched chains. A. Proteins B. Cellulose C. Glycogen D. Amylopectin
The most abundantly present chemical substance in living organisms is
Choose the incorrect pair.
Choose the incorrect statements A. Gums are polymers. B. Some secondary metabolites have ecological significance. C. Antibiotics are primary metabolites. D. Lemon grass oil is a vegetable oil or edible oil.
Choose the incorrect statement.
Match List I with List II List – I List – II A) Codeine i) Toxin B) Vinblastin ii) Alkaloid C) Concanavalin A iii) Lectin D) Abrin iv) Drug A B C D 1. ii iv iii i 2. i iv iii ii 3. iv ii iii i 4. ii iii iv i
Lecithin is a
Statement A: The structure of an amino acid changes in solutions of different pH. Statement B: In acid pH, the amino acid shows positive charge and acts as base.
Which one of the following is an aromatic amino acid?
Statement A: Lysine is a basic amino acid. Statement B: Lysine has more carboxylic groups than amino groups.
The acid in which the tissue of an organism is ground to know the chemical composition of the tissue is
Match the List I with List II and choose the correct match. List – I List – II A) Sulphur containing amino acid i) Aspartic acid B) Acidic amino acid ii) Tryptophan C) Aromatic amino acid iii) Arginine D) Basic amino acid iv) Cysteine A B C D 1. iv i ii iii 2. iv ii i iii 3. iii i ii iv 4. iv i iii ii
Which of the following is the most abundant protein on Earth?
Glycine is substituted-
Among the following choose the biomacromolecules that are present in the form of branched chains. A. Proteins B. Cellulose C. Glycogen. D. Amylopectin
Identify the correct combination.
Which of the following statement is incorrect?
Which of the following compounds lack a phosphate group in their chemical structure?
Which of the following is not an example of primary metabolite?
The acid in which the tissue of an organism is ground to know the chemical composition of the tissue is
Identify the incorrect statement.
Phosphatidyl choline is a-
Match the columns: Column I Column II (a) Amino acid (i) Adenosine (b) Fatty acid (ii) Lysine (c) Nucleoside (iii) Glycogen (d) Polysaccharide (iv) Palmitic acid
The amino acid Methionine contains:
This is not a component of Nucleotide
The component of enzyme that can form coordinate bonds with the substrate is
Paper made from plant pulp and cotton fibre is:
Statement A: A complete, catalytically active enzyme together with its bound coenzyme and/or metal ions is called a holoenzyme. Statement B: The protein part of such an enzyme is called the apoenzyme or apoprotein.
Activity of the enzyme is relatively less influenced by the following factor.
Choose the wrong match
Choose the correct statement with respect to enzymes
In any DNA molecule the ratio between the number of sugars and number of phosphates is:
What is the effect of low and high temperatures on the activity of enzymes?
Choose the incorrect statement with respect to enzymes.
The B lymphocytes produce certain substances in response to pathogens into our blood to fight them. These substances are chemically:
Which of the following is correct with reference to enzymes?
All are secondary metabolites except
GLUT-4 that enables glucose transport into cells is chemically a:
Which acid is used while grinding living tissues to analyze its chemical composition?
Which one of the following is a homopolymer and secondary metabolite?
Enzyme nitrogenase is a
Select the incorrect statement w.r.t. proteins.
Inhibition of succinic dehydrogenase by malonate is an example of
Amino acids are substituted methane. Identify the amino acid which is formed due to substitution of only two hydrogen atoms of methane.
All of the features are related to peptide bond except:
Statement A: Rate of a chemical reaction doubles or decreases by half for every 10°C change in either direction. Statement B: Enzyme catalysed reactions are faster than the uncatalysed reactions of the same type.
Which micromolecules have glycosidic bonds?
The structure of most abundantly present protein in the animal world was given by
Which is the twenty carbon unsaturated fatty acid?
Identify the incorrect statement.
Haemoglobin of adult human
Statins are
An enzyme belongs to class P forms peptide bonds between amino acids during translation. Q is the class of enzyme that breaks the peptide bonds by addition of water. What are P and Q respectively?
Which of the given nitrogenous bases is/are purine? a. Cytosine b. Adenine c. Uracil d. Guanine
The bond which connects a nitrogenous base with deoxyribose sugar in a nucleotide of DNA molecule is
Corn is immersed in the boiling water. It is then cooled, the solution becomes sweet. It is due to
The elementary sulphur is present in
The ‘lock’ and ‘key’ model of enzyme action illustrates that a particular enzyme molecule
Which of the following is the simplest amino acid?
With reference to enzymes, turn over number means
To determine the type of organic compounds found in a living organism, the living tissue is ground with the help of a mortar and a pestle in
Which of the following polysaccharide is wrongly matched with its monomer?
An enzyme catalyses a reaction by activation energy of the reaction.
Which of the following is a secondary metabolite as well as a drug?
What is correct about living state?
Common substituents between serine and tyrosine include all, except
Dehydration involving elimination of a water moiety is not seen during which of the following? (a) Formation of a glycosidic bond (b) Formation of a phosphoester bond (c) Formation of a disulphide bond (d) Formation of a peptide bond (e) Pairing between thymine and adenine on two antiparallel strands of DNA.
Complete the analogy by marking the correct option w.r.t. secondary metabolites Curcumin : Drugs : : Concanvalin A : .
What is the chemical nature of lecithin?
Identify the amino acid represented in the diagram below.
Which of the following is INCORRECT about glycogen?
Transfer of group other than hydrogen kept under which class of enzyme ?
Mark the incorrect option.
Malic acid inhibits the activity of enzyme succinate dehydrogenase. During this inhibition
What is Z in the following reaction?
FAD and FMN are coenzymes. Which vitamin is incorporated into this structure?
Which of the following is the most important monomer component of the chitinous exoskeleton of arthropods?
Select the incorrect statement with respect to adult human hemoglobin.
Select the wrong statements with respect to DNA. I The backbone of DNA is formed by the sugar-phosphate chain. II The two strands of the polynucleotide are anti-parallel. III The nitrogen bases are parallel to the backbone. IV The backbone contains a hydrogen bond.
The given structure of protein corresponds to:
Sugar and amino acids are :
Which of the following bonds are formed by removal of water molecule? I. Peptide bond II. Glycosidic bond III. Phosphodiester bond. IV. Hydrogen bonds
Lyases catalyze through
If we observe the structure of proteins, disulphide bonds are formed between
Enzymes having slightly different molecular structure but performing similar activity are
Which of the following is not a secondary metabolite?
The chemical and physical properties of amino acids are of essentially because of;
Choose the incorrect pair
