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Biomolecules Chemistry NEET MCQ for Students
Hydrolysis of sucrose are
(A) Ribose + Glucose
(B) Fructose + Mannose
(C) Galactose + Glucose
(D) Glucose + Fructose
Option d – Glucose + Fructose
Hydrolysis of starch gives ( Biomolecules Chemistry NEET MCQ )
(A) Fructose
(B) Glucose
(C) Lactose
(D) Galactose
Option b – Glucose
Prolong heating with hydroiodic acid and glucose gives
(A) Glucose hexaiodide
(B) Glucose pentaiodide
(C) Glucose tetraiodide
(D) n-Hexane
Option d – n-Hexane
Which is Aldotetrose? ( Biomolecules Chemistry NEET MCQ )
(A) 2,3-dihydroxy propanal
(B) Erythrose
(C) Erythrulose
(D) Xylose
Option b – Erythrose
Fructose is
(A) Ketotetrose
(B) Ketohexose
(C) Aldotriose
(D) Aldohexose
Option b – Ketohexose
Which is not aldopentose? ( Biomolecules Chemistry NEET MCQ )
(A) Xylose
(B) Arabinose
(C) Ribose
(D) Erythrose
Option d – Erythrose
The number of asymmetric carbon atoms in glucose and fructose is respectively
(A) Five, two
(B) Five, five
(C) Four, three
(D) Four, four
Option c – Four, three
In the animal body, carbohydrates are stored as ( Biomolecules Chemistry NEET MCQ )
(A) Glucose
(B) Sugar
(C) Glycogen
(D) Fructose
Option c – Glycogen
Disaccharide among the following is
(A) Fructose
(B) Maltose
(C) Glucose
(D) Raffinose
Option b – Maltose
Which is trisaccharide? ( Biomolecules Chemistry NEET MCQ )
(A) Stachyose
(B) Raffinose
(C) Galactose
(D) Fructose
Option b – Raffinose
Which of the following biomolecule can be expressed as Cx(H₂O)y?
(A) Proteins
(B) Lipids
(C) Fatts
(D) Carbohydrates
Option d – Carbohydrates
Monosaccharides in hydrolysis yield ( Biomolecules Chemistry NEET MCQ )
(A) 1 to 10 monosaccharide units
(B) 2 to 20 monosaccharide units
(C) No monosaccharide unit
(D) 5 to 15 monosaccharide units
Option c – No monosaccharide unit
Which of the following is ketose?
(A) Erythrose
(B) Arabinose
(C) Galactose
(D) Ribulose
Option d – Ribulose
The primary structural materials of organisms are ( Biomolecules Chemistry NEET MCQ )
(A) Proteins and cellulose
(B) Vitamins and lipids
(C) Proteins and 2-chlorobutane
(D) Cellulose and NaOH
Option a – Proteins and cellulose
Lipids are the main ingredient of vegetable oils and
(A) Milk fats
(B) Biocatalyst
(C) Nucleic acid
(D) Vegetable oil
Option a – Milk fats
Which of the following constitutes the genetic material of organisms? ( Biomolecules Chemistry NEET MCQ )
(A) Vitamin
(B) Nucleic acid
(C) Carbohydrate + HCl
(D) Steroid
Option b – Nucleic acid
Which of the following are optically active polyhydroxy aldehydes/ketones/compounds which give rise to such units on hydrolysis?
(A) Nucleic acids
(B) Proteins
(C) Carbohydrates
(D) Lipids
Option c – Carbohydrates
Some carbohydrates like glucose and fructose are ( Biomolecules Chemistry NEET MCQ )
(A) Fatty acids
(B) Nucleic acids
(C) Lipids
(D) Sugars
Option d – Sugars
Fructofuranose exists in …. anomeric forms.
(A) Four
(B) Three
(C) Two
(D) One
Option c – Two
Glucose is ( Biomolecules Chemistry NEET MCQ )
(A) a Cyclic six-membered ring
(B) a Cyclic six-membered ring in analogy with pyrene
(C) a Cyclic five-membered ring in analogy with furan
(D) a Cyclic five-membered ring
Option b – a Cyclic six-membered ring in analogy with pyrene
Inverted sugar is
(A) A variety of sucrose
(B) a mixture of glucose and galactose
(C) an Equimolar mixture of glucose and fructose
(D) an Optically inactive form of sugar
Option c – an Equimolar mixture of glucose and fructose
The pyranose ring structure of glucose contains ( Biomolecules Chemistry NEET MCQ )
(A) Amide linkage
(B) Ether linkage
(C) Ester linkage
(D) Imine linkage
Option b – Ether linkage
Glucose + HCN -> ?
(A) Rearrangement product
(B) Oxidation product
(C) Reduction of product
(D) Glucose cyanohydrin
Option d – Glucose cyanohydrin
When compound A is on oxidation by nitric acid and produces saccharic acid then A will be ( Biomolecules Chemistry NEET MCQ )
(A) Glucose
(B) Glucoxime
(C) Fructose
(D) Galactose
Option a – Glucose
The number of hydroxyl groups in glucose pentacetate is
(A) Two
(B) Zero
(C) Five
(D) Eight
Option b – Zero
A monosaccharide on acetylation gives triacetate, but it is not oxidized by bromine water. The monosaccharide is ( Biomolecules Chemistry NEET MCQ )
(A) Ribose
(B) Erythrose
(C) Erythrulose
(D) Xylulose
Option c – Erythrulose
A laevorotatory carbohydrate present in fruits is
(A) Maltose
(B) Lactose
(C) Sucrose
(D) Fructose
Option d – Fructose
Glucose is not ( Biomolecules Chemistry NEET MCQ )
(A) Aldohexose
(B) Carbohydrates
(C) Aldoses
(D) Semicarbazide
Option d – Semicarbazide
Glyceraldehyde and dihydroxy acetone are a pair of
(A) Anomers
(B) Enantiomers
(C) Epimers
(D) Functional isomers
Option d – Functional isomers
Glucose treated with hydroxylamine to give ( Biomolecules Chemistry NEET MCQ )
(A) Glucose hydrazone
(B) Glucose phenyl hydrazone
(C) Glucoxime
(D) Glucose semicarbazide
Option c – Glucoxime
Which one of the following polymers is used in making bulletproof vests?
(a) Bakelite
(b) Polyamides
(c) Taflon
(d) Polyurethane
Option b – Polyamides
Which one among the following gases readily combines with the hemoglobin of the blood? ( Biomolecules Chemistry NEET MCQ )
(a) Methane
(b) Nitrogen dioxide
(c) Carbon monoxide
(d) Sulphur dioxide
Option c – Carbon monoxide
Cyanide poisoning causes death in seconds because
(a) it breaks the electron transport chain
(b) it denatures enzymes in the heart muscle.
(c) it causes cardiac arrest.
(d) it causes lysis of red blood cells.
Option a – it breaks the electron transport chain
Sweat contains water and ………
(a) the citric acid
(b) lactic acid
(c) salt
(d) vinegar
Option c – salt
(a) I and III
(b) II and IV
(c) I, II and III
(d) II, III and IV
Option b – II and IV
Which among the following is not a polymer?
(a) Nylon
(b) Teflon
(c) Caprolactam
(d) Polystyrene
Option c – Caprolactam
Which one among the following is the natural polymer?
(a) Nylon
(b) Teflon
(c) PVC
(d) Cellulose
Option d – Cellulose
Bakelite is formed by the condensation of
(a) Urea and formaldehyde
(b) Phenol and formaldehyde
(c) Phenol and acetaldehyde
(d) Melamine and formaldehyde
Option b – Phenol and formaldehyde
Teflon is the common name of
(a) Polytetrafluoroethylene
(b) Polyvinyl chloride
(c) Polyvinyl fluoride
(d) Dichlorodifluoro methane
Option a – Polytetrafluoroethylene
Non-stick frying pans are coated with
(a) Orlon
(b) Teflon
(c) Polystyrene
(d) Polypropylene
Option b – Teflon
Which one of the following polymers is not biodegradable?
(a) Cellulose
(b) Starch
(c) Protein
(d) PVC
Option d – PVC
Phenol is used in the manufacture of which one of the following?
(a) PVC
(b) Nylon
(c) Polystyrene
(d) Bakelite
Option d – Bakelite
Consider the following statements. I. Vitamins are complex organic molecules. II. Vitamins are required in small amounts for our life. Ill. Water-soluble vitamins can be stored in our bodies. Which of the above statement(s) is/are correct?
(a) I and II
(b) I and III
(c) II and III
(d) Only III
Option a – I and II
Which of the following statements about vitamins is correct? I. Vitamine C is essential to make connective tissue in the body. II. Vitamin D is needed for the synthesis of eye pigment. III. Vitamin B₂ helps in the maturation of RBC. IV. Vitamin C is required to make use of calcium absorbed from the intestine. Select the correct answer using the codes given below.
(a) I and II
(b) I and III
(c) II and IV
(d) I and IV
Option b – I and III
Enzymes
(a) accelerate biochemical reactions
(b) consist of amino acids
(c) have optimum activity at body temperature
(d) have all these properties.
Option d – have all these properties
Which one of the following hormones contains a peptide chain?
(a) Oxytocin
(b) Corticotropin
(c) Insulin
(d) Cortisone
Option a – Oxytocin
The function of enzymes in the living system is to
(a) Transport oxygen
(b) provide immunity
(c) catalyze biochemical reaction
(d) provide energy
Option c – catalyze biochemical reaction
Which one of the following enzymes is used to digest gelatine in the process of recovering silver from the photographic film?
(a) Amylase
(b) Pepsin
(c) Lipase
(d) None of these
Option b – Pepsin
Which of the following vegetable oils does not contain essential fatty acids ?
(a) Sunflower oil
(b) Mustard oil
(c) Coconut oil
(d) Groundnut oil
Option a – Sunflower oil
Which of the following has magnesium?
(a) Carbonic anhydrase
(b) Vitamin B₁₂
(c) Chlorophyll
(d) Haemocyanine
Option c – Chlorophyll
Which one of the following statements is INCORRECT?
(A) Pars distalis produces Somatotrophic hormone.
(B) Pars intermedia secretes only one hormone.
(C) Pars nervosa secretes two hormones.
(D) Pars distalis does not secrete any hormone.
Option d – Pars distalis does not secrete any hormone.
………. is a yellowish pigmented spot present at the posterior pole of the eye and has densely. packed cones.
(A) Pupil
(B) Macula lutea
(C) Iris
(D) Blindspot
Option b – Macula lutea
Progesterone is secreted by
(A) the sac-like structure called alveoli
(B) corpus luteum
(C) Leydig cells
(D) interstitial cells
Option b – corpus luteum
A single U-shaped bone present at the base of the buccal cavity and it is also included in the skull is
(A) clavicle
(B) acromion
(C) malleus
(D) hyoid
Option d – hyoid
Rods contain a purplish red protein ………. that contains a derivative of vitamin A.
(A) rhodopsin
(B) myoglobin
(C) actin
(D) chymotrypsin
Option a – rhodopsin
The hormone cholecystokinin acts on
(A) gastric glands and atria of the heart
(B) pancreas and gallbladder
(C) urinary bladder and urethra
(D) the prostate gland and Cowper’s gland
Option b – pancreas and gallbladder
The number of cervical vertebrae in almost all mammals is
(A) 7
(B) 12
(C) 15
(D) 20
Option a – 7
Which of the following statement is INCORRECT?
(A) The cerebral aqueduct passes through the midbrain.
(B) Corpora quadrigemina are the four round swellings present in the dorsal portion of the midbrain.
(C) Meninges is the tract of nerve fibers that connect cerebral hemispheres.
(D) The cerebral cortex contains association areas.
Option c – Meninges is the tract of nerve fibers that connect cerebral hemispheres.
The olfactory receptors detect
(A) taste
(B) smell
(C) touch
(D) pain
Option b – smell
Excess secretion of growth hormone in adults especially in middle age can result in
(A) Acromegaly
(B) Graves’ disease
(C) Addison’s disease
(D) Exophthalmic goiter
Option a – Acromegaly
…… joint occurs between the carpal bones of the wrist.
(A) Pivot
(B) Hinge
(C) Gliding
(D) Saddle
Option c – Gliding
Read the following statements and select the correct option. Statement I: Afferent neuron receives a stimulus from a sensory organ. Statement II: Efferent neuron is a motor neuron.
(A) Statement I is correct while Statement II is incorrect.
(B) Statement I is incorrect while Statement II is correct.
(C) Both statements are correct.
(D) Both statements are incorrect.
Option c – Both statements are correct.
The hormone responsible for maintaining the diurnal rhythms of our body is secreted by …….. gland.
(A) adrenal
(B) thyroid
(C) pineal
(D) thymus
Option c – pineal
Which of the following bone does NOT form a forelimb?
(A) Humerus
(B) Femur
(C) Radius
(D) Metacarpal
Option b – Femur
Which of the following group correctly includes motor nerves?
(A) Olfactory, Maxillary, Hypoglossal
(B) Vagus, Auditory, Abducens
(C) Abducens, Trochlear, Occulomotor
(D) Facial, Occulomotor, Vagus
Option c – Abducens, Trochlear, Occulomotor
Identify the INCORRECT statement.
(A) Cortisol is a glucocorticoid that stimulates RBC production.
(B) Adrenal cortex secretes the hormone aldosterone.
(C) Epinephrine and norepinephrine are commonly called catecholamines.
(D) Adrenal medulla secretes corticoids.
Option d – Adrenal medulla secretes corticoids.
Select the INCORRECT match.
(A) Vertebrochondral ribs – 8th, 9th, and 10th pair
(B) Floating ribs – 11th and 12th pair
(C) True ribs – 1st to 7th pair
(D) False ribs – 9th and 10th pair
Option d – False ribs – 9th and 10th pair
…….. regulate the diameter of pupuil
(A) Anterior portion of the sclera
(B) Muscle fibers of the iris
(C) Ciliary body
(D) Choroid
Option b – Muscle fibers of the iris
Which of the following is CORRECT regarding the hormone ANF?
(A) It is secreted by the gastrointestinal tract.
(B) It is secreted when blood pressure decreases.
(C) It stimulates gastric secretion.
(D) It is a peptide hormone.
Option d – It is a peptide hormone.
Which of the following statement is INCORRECT?
(A) Clavicle is commonly called the collar bone.
(B) The two halves of the pelvic girdle meet ventrally to form the pubic symphysis.
(C) Scapula is situated in the dorsal part of the thorax.
(D) Limb bones and girdles form the axial skeleton.
Option d – Limb bones and girdles form the axial skeleton.
Identify the type of movement exhibited by ova and fertilized egg in the ampulla of the fallopian tube.
(A) Ciliary movement
(B) Amoeboid movement
(C) Muscular movement
(D) Flagellar movement
Option a – Ciliary movement
The vestibular apparatus of the inner ear is composed of semi-circular canals and
(A) otolith
(B) malleus
(C) Eustachian tube
(D) labyrinth
Option a – otolith
Hypothalamus secretes which of the following hormone?
(A) Oxytocin and prolactin
(B) Melatonin and ADH
(C) Oxytocin and vasopressin
(D) TSH and Prolactin
Option c – Oxytocin and vasopressin
Which of the following is CORRECT regarding osteoporosis?
(A) It is caused due to increased levels of oestrogen.
(B) It is characterized by decreased bone mass.
(C) It commonly occurs in children of 2 – 5 years of age.
(D) It is a condition of progressive degeneration of skeletal muscles.
Option b – It is characterized by decreased bone mass.
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