Solved papers for NEET Biology NEET PYQ-Biomolecule

done NEET PYQ-Biomolecule Total Questions - 41

• question_answer1) Lactose is composed of: [AIPMT 1998]
  A)
  glucose + fructose
  done clear
  B)
  glucose + glucose
  done clear
  C)
  glucose + galactose
  done clear
  D)
   fructose + galactose
  done clear
  View Answer play_arrow

• question_answer2) Cellulose, the most important constituent of plant cell wall is made up of: [AIPMT 1998]
  A)
  branched chain of glucose molecules linked by \[\alpha \], 1,6 glycosidic bond at the site of branching
  done clear
  B)
  unbranched chain of glucose molecules linked by \[\alpha \], 1,4 glycosidic bond
  done clear
  C)
  branched chain of glucose molecules linked by \[\beta \], 1, 4 glycosidic bond in straight chain and \[\alpha \], 1, 6 glycosidic bond at the site of branching
  done clear
  D)
  unbranched chain of glucose molecules linked by \[\beta \], 1, 4 glycosidic bond
  done clear
  View Answer play_arrow

• question_answer3)   Conjugated proteins containing carbohydrates as prosthetic group are called: [AIPMT 2000]
  A)
  lipoproteins
  done clear
  B)
  nucleoproteins
  done clear
  C)
  glycoproteins
  done clear
  D)
  chromoproteins
  done clear
  View Answer play_arrow

• question_answer4) Which one of the following amino acids is an essential part of human diet? [AIPMT 2000]
  A)
  Glycine
  done clear
  B)
  Phenylalanine
  done clear
  C)
  Serine
  done clear
  D)
  Aspartic acid
  done clear
  View Answer play_arrow

• question_answer5) Most abundant organic compound on earth is: [AIPMT 2001]
  A)
  protein
  done clear
  B)
  cellulose
  done clear
  C)
  lipids
  done clear
  D)
  steroids
  done clear
  View Answer play_arrow

• question_answer6) Spoilage of oil can be detected by which fatty acid? [AIPMT 2001]
  A)
  Oleic acid
  done clear
  B)
  Linolenic acid
  done clear
  C)
  Linoleic acid
  done clear
  D)
  Erusic acid
  done clear
  View Answer play_arrow

• question_answer7) In plants, inulin and pectin are: [AIPMT 2001]
  A)
  reserve materials
  done clear
  B)
  wastes
  done clear
  C)
  excretory material
  done clear
  D)
    insect-attracting material
  done clear
  View Answer play_arrow

• question_answer8) Which is a reducing sugar? [AIPMT 2002]
  A)
  Galactose
  done clear
  B)
  Gluconic acid
  done clear
  C)
  \[\beta \]-methyl galactoside        
  done clear
  D)
  Sucrose
  done clear
  View Answer play_arrow

• question_answer9) lipids are insoluble in water because lipids molecules are: [AIPMT 2002]
  A)
  hydrophilic
  done clear
  B)
  hydrophobic
  done clear
  C)
  neutral
  done clear
  D)
  Zwitter ions
  done clear
  View Answer play_arrow

• question_answer10) Collagen is: [AIPMT 2002]
  A)
  fibrous protein
  done clear
  B)
  globular protein
  done clear
  C)
  lipid
  done clear
  D)
  carbohydrate
  done clear
  View Answer play_arrow

• question_answer11) In which one of the following nitrogen is not a constituent? [AIPMT 2003]
  A)
  Invertase
  done clear
  B)
  Pepsin
  done clear
  C)
  Idioblast
  done clear
  D)
  Bacteriochlorophyll
  done clear
  View Answer play_arrow

• question_answer12) Which one of the following pairs is not correctly matched? [AIPMT (S) 2004]
  A)
  Vitamin \[{{B}_{12}}\]— Pernicious anaemia
  done clear
  B)
  Vitamin \[{{B}_{6}}\] — Loss of appetite
  done clear
  C)
  Vitamin \[{{B}_{1}}\] — Beri-beri
  done clear
  D)
  Vitamin \[{{B}_{2}}\] — Pellagra
  done clear
  View Answer play_arrow

• question_answer13) Which one of the following is the correct matching of a vitamin, its nature and its deficiency disease? [AIPMT (S) 2004]
  A)
  Vitamin A — Fat soluble — Nightblindness 
  done clear
  B)
  Vitamin K — Fat soluble — Beri-beri
  done clear
  C)
  Vitamin A — Fat soluble —Beri-beri
  done clear
  D)
  Vitamin K— Water soluble—Pellagra
  done clear
  View Answer play_arrow

• question_answer14) The richest sources of vitamin-Big are: [AIPMT (S) 2004]
  A)
  goat's liver and Spirulina
  done clear
  B)
  chocolate and green gram
  done clear
  C)
  rice and hen's egg
  done clear
  D)
  carrot and chicken's breast
  done clear
  View Answer play_arrow

• question_answer15) Nucleotide are building blocks of nucleic acids, nucleotide is a composite molecule formed by: [AIPMT (S) 2005]
  A)
  (base-sugar-phosphate)
  done clear
  B)
  base-sugar-OH
  done clear
  C)
  base-sugar-phosphate
  done clear
  D)
  sugar-phosphate
  done clear
  View Answer play_arrow

• question_answer16) Which of the following is the simplest amino acid? [AIPMT (S) 2005]
  A)
  Tyrosine
  done clear
  B)
  Asparagine
  done clear
  C)
  Glycine
  done clear
  D)
  Alanine
  done clear
  View Answer play_arrow

• question_answer17) Carbohydrates, the most abundant biomoiecules on earth, are produced by: [AIPMT (S) 2005]
  A)
  all bacteria, fungi and algae
  done clear
  B)
  fungi, algae and green plant cells
  done clear
  C)
  some bacteria, algae and green plant cells
  done clear
  D)
  viruses, fungi and bacteria
  done clear
  View Answer play_arrow

• question_answer18) Which one of the following aminoacids was not found to be synthesized in Miller's experiment? [AIPMT (S) 2006]
  A)
  Glycine
  done clear
  B)
  Asparticacid
  done clear
  C)
  Glutamic acid
  done clear
  D)
  Alanine
  done clear
  View Answer play_arrow

• question_answer19) Amino acid sequence, in protein synthesis is decided by the sequence of: [AIPMT (S) 2006]
  A)
  t-RNA
  done clear
  B)
  m-RNA
  done clear
  C)
  c-DNA
  done clear
  D)
  r-RNA
  done clear
  View Answer play_arrow

• question_answer20) 

  Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material? [AIPMT (S) 2008] [A] Easily translocated [B] Chemically non-reactive [C] Easily digested by animals [D] Osmotic ally inactive [E] Synthesized during photosynthesis The useful properties are

  A)
  [B] and [C]
  done clear
  B)
  [B] and [D]
  done clear
  C)
  [A], [C] and [E]
  done clear
  D)
  [A] and [E]
  done clear
  View Answer play_arrow

• question_answer21) Which one of the following pair of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it? [AIPMT (S) 2008]
  A)
  Thymine, Uracil  - Pyrimidines
  done clear
  B)
  Uracil, Cytosine  - Pyrimidines
  done clear
  C)
  Guanine, Adenine - Purines
  done clear
  D)
  Adenine, Thymine - Purines
  done clear
  View Answer play_arrow

• question_answer22) The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that Adenosine Triphosphate (ATP) is formed because [AIPMT (S) 2008]
  A)
  high energy bonds are formed in mitochondrial proteins
  done clear
  B)
  ADP is pumped out of the matrix into the Inter membrane space
  done clear
  C)
  a proton gradient forms across the inner membrane
  done clear
  D)
  there is a change in the permeability of the inner mitochondrial membrane toward Adenosine Diphosphate (ADP)               
  done clear
  View Answer play_arrow

• question_answer23) Which one of the following is the correct matching of three items and their grouping category? [AIPMT (S) 2009]
  A)
  Malleus, incus, cochlea - Ear ossicles
  done clear
  B)
  Ilium, ischium, pubis - Coxal bones of pelvic girdle
  done clear
  C)
  Actin, myosin, rhodopsin - Muscle proteins
  done clear
  D)
  Cytosine, uracil, thiamine - Pyrimidines
  done clear
  View Answer play_arrow

• question_answer24) The 3 '-5' phosphodiester linkages inside a polynucleotide chain serve to join [AIPMT (M) 2010]
  A)
  one DNA strand with the other DNA strand
  done clear
  B)
  one nucleoside with another nucleoside
  done clear
  C)
  one nucleotide with another nucleotide
  done clear
  D)
  one nitrogenous base with pentose sugar
  done clear
  View Answer play_arrow

• question_answer25) Which one of the following structural formulae of two organic compounds is correctly identified along with its related function? [AIPMT (S) 2011]
  A)
  A — Triglycerid — source of energy
  done clear
  B)
  B — Uracil    — a component of DNA
  done clear
  C)
  A — Lecithin   — a component of cell membrane
  done clear
  D)
  B — Adenine   — a nucleoride that makes up nucleic acids
  done clear
  View Answer play_arrow

• question_answer26) 

  Given   below   is   the   diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component X in it [AIPMT (S) 2012]

  A)
  Cholesterol - Guanin
  done clear
  B)
  Amino acid - \[\text{N}{{\text{H}}_{\text{2}}}\]
  done clear
  C)
  Nucleoride - Adenine
  done clear
  D)
  Nucleoside - Uracil
  done clear
  View Answer play_arrow

• question_answer27) Which one is the most abundant protein in the animal world? [AIPMT (S) 2012]
  A)
  Trypsin
  done clear
  B)
  Haemoglobin
  done clear
  C)
  Collagen
  done clear
  D)
  Insulin
  done clear
  View Answer play_arrow

• question_answer28) Which one out of A-D given below correctly represents the structural formula of the basic amino acid? [AIPMT (S) 2012]

  A	B	C	D

  A)
  C
  done clear
  B)
  D
  done clear
  C)
  A
  done clear
  D)
  B
  done clear
  View Answer play_arrow

• question_answer29) A phosphoglyceride is always made up of [NEET 2013]
  A)
  only a saturated fatty acid esterifies to a glycerol molecule to which a phosphate group is also attached
  done clear
  B)
  only an unsaturated fatty acid esterifies to a glycerol molecule to which a phosphate group is also attached
  done clear
  C)
  a saturated or unsaturated fatty acid esterifies to a glycerol molecule to which a phosphate group is also attached
  done clear
  D)
  a saturated or unsaturated fatty acid esterifies to a phosphate group, which is also attached to a glycerol molecule
  done clear
  View Answer play_arrow

• question_answer30) Macromolecule chitin is [NEET 2013]
  A)
  nitrogen containing polysaccharide
  done clear
  B)
  phosphorus containing polysaccharide
  done clear
  C)
  sulphur containing polysaccharide
  done clear
  D)
  simple polysaccharide
  done clear
  View Answer play_arrow

• question_answer31) Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II.         [NEET 2013]
  A)

  Glycine and glucose - Small intestine and active absorption

  done clear B) Fructose and \[N{{a}^{+}}\]- Small intestine passive absorption

  done clear
  C)

  Glycerol and fatty acids - Duodenum and move as chi omicrons

  done clear
  D)

  Cholesterol and maltose - Large intestine and active absorption

  done clear
  View Answer play_arrow

• question_answer32) Which one of the following is a non-reducing carbohydrate? [NEET 2014]
  A)
  Maltose
  done clear
  B)
  Sucrose
  done clear
  C)
  Lactose
  done clear
  D)
  Ribose 5-phosphate
  done clear
  View Answer play_arrow

• question_answer33) Which one of the following is not applicable to RNA? [NEET (Re) 2015]
  A)
  Complementary base pairing
  done clear
  B)
  5' phosphoryl and 3' hydroxyl ends
  done clear
  C)
  Heterocyclic nitrogenous bases
  done clear
  D)
  Chargaff's rule
  done clear
  View Answer play_arrow

• question_answer34) Which of the following biomolecules does have a phosphodiester bond? [NEET (Re) 2015]
  A)
  Fatty acids in a diglyceride
  done clear
  B)
  Monosaccharides in a polysaccharide
  done clear
  C)
  Amino acids in a polypeptide
  done clear
  D)
  Nucleic acids in a nucleotide
  done clear
  View Answer play_arrow

• question_answer35) Which one of the following statements is wrong? [NEET - 2016 Phase-I]
  A)
  Sucrose is a disaccharide
  done clear
  B)
  Cellulose is a polysaccharide
  done clear
  C)
  Uracil is a pyrimidine
  done clear
  D)
  Glycine is a sulphur containing amino acid
  done clear
  View Answer play_arrow

• question_answer36) A typical fat molecules is made up of: [NEET - 2016 Phase-I]
  A)
  Three glycerol molecules and one fatty acid molecules
  done clear
  B)
  One glycerol and three fatty acid molecules
  done clear
  C)
  One glycerol and one fatty acid molecule
  done clear
  D)
  Three glycerol and three fatty acid molecules
  done clear
  View Answer play_arrow

• question_answer37) Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria? [NEET - 2016 Phase-II]
  A)
  5 S rRNA
  done clear
  B)
  18 S rRNA
  done clear
  C)
  23 S Rrna
  done clear
  D)
  5.8 S rRNA
  done clear
  View Answer play_arrow

• question_answer38) Which of the following is the least likely to be involved in stabilizing the three-dimensional folding of most proteins?
  A)
  Hydrogen bonds
  done clear
  B)
  Electrostatic interaction
  done clear
  C)
  Hydrophobic interaction
  done clear
  D)
  Ester bonds
  done clear
  View Answer play_arrow

• question_answer39) If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered? [NEET-2017]
  A)
  333
  done clear
  B)
  1
  done clear
  C)
  11
  done clear
  D)
  33
  done clear
  View Answer play_arrow

• question_answer40) Which of the following are not polymeric? [NEET-2017]
  A)
  Lipids
  done clear
  B)
  Nucleic acids
  done clear
  C)
  Proteins
  done clear
  D)
  Polysaccharides
  done clear
  View Answer play_arrow

• question_answer41) The two functional groups characteristic of sugars are [NEET - 2018]
  A)
  Carbonyl and phosphate
  done clear
  B)
  Carbonyl and methyl
  done clear
  C)
  Hydroxyl and methyl
  done clear
  D)
  Carbonyl and hydroxyl
  done clear
  View Answer play_arrow