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NEETREVISIONSERIES

DIGESTIONANDABSORPTION

ReviseMostImportantQuestionstoCrackNEET2020

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Q-1-10761403

Identify the cells whose secretion protects the lining of gastro-

intestinal tract from various enzymes

(A)DuodenalCells

(B)ChiefCells

(C)GobletCells

(D)OxynticCells

CORRECTANSWER:C

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Q-2-13956516

The given figure represents the human digestive system. Identify

A,B,C D and E.

(A)A-Parotidgland,B-Lvier,C-Pancreas,D-Caecu,E-

Vermiformappendix

(B)A-Parotidgland,B-Pancereas,C-Liver,D-Aecum,E-

Vermiformappendix

(C)A-Parotidgland,B-Caecum,C-Pancreas,D-Liver,E-

Vermiformappendix

(D)A-Parotidgalnd,B-Liver.C-Caecu,D-

Pancreas,E=Vermiformappendix

CORRECTANSWER:A

Q-3-13956520

Read the following statements and select the correct option.

Statement 1: Dental formula gives the number of teeth in the half of

each jaw.

Statement 2: Dental formula can be xpressed for insectivorous

mammals as well as for the nonmammalian vertebrates.

(A)Bothstatements1and2arecorrect

(B)Statement1iscorrectbutstatement2isincorrect

Statement1isincorrectbutstatement2iscorrect.

(C)Statement1isincorrectbutstatement2iscorrect.

(D)Bothstatements1and2areincorrect.

CORRECTANSWER:B

SOLUTION:

Dentalformulaisarepresentationofthedntitionofan

animal.Adentalformulaconsistsofeightnumbers,four

aboveandfourbelowahorizontalline.Thenumbers

represent(fromlefttoright)thenumberofincisors,

canines,premolarsandmolarsineitherhalfoftheupeer

andlowerjawse.e.,thedentalformulaofmanis 21232123

Dentalformulaisusedtorepresentheterodontteeth

whicharepresentinmammalsonly.Itcannotbeusedto

represetndentitionofvartebratesotherthanmammals

astheyhavehomodontteeth.

Q-4-17934580

Bile salts are poured into the alimentary canal where they are

necessary for the absorption of

(B)Fatsolublevitamis

(C)Aminoacidsandmonosaccharides

(D)Allthenutrientsareemulisifiedinchyme

CORRECTANSWER:B

Na + and Ca + +

SOLUTION:

(b)Bilesalthepintheabsorptionoffatsandfatsoluble

vitaminsuchasA,D,EandKinintestine.

Q-5-17934379

"Chief cells" or "Zymogen cells"

(A)Isthumusofthgland

(B)Neckofthetabulargland

(C)Baseofthetubularreigon

(D)Alltheabove

CORRECTANSWER:C

Q-6-17934647

When breast feeding is replaced by less nutritive food low in

proteins and calories, the infants below the age of one year are

likely to suffer from

(A)Marasmus

(B)Rickets

(C)Kwashiorkor

(D)Pellagra

CORRECTANSWER:A

SOLUTION:

(a)Marasmusoccursduetoprolongedmalnutririonand

deficiencyofproteinsandcalories.

Q-7-30696197

Epiglottis is meant for protecting

(A)Oesophagusfromentryofair

(B)Nasalchambersfromentryoffood

(C)Larynxfromentryoffood

(D)Teethfromcaries

CORRECTANSWER:C

Q-8-30696220

The process involved in passage of food in the alimentary canal is

(A)work

(B)Egestion

(C)Digestion

(D)Peristalsis

CORRECTANSWER:C

Q-9-30696289

Zymogen cells of grastric glands produce

(A)Chymotrypsin

(B)Pepsin

(C)Pepsinogen

(D)Trypsin

CORRECTANSWER:C

Q-10-30696305

Oxyntic cells in stomach secrete

(A)Pepsin

(B)Mucus

(C)HCL

(D)Rennin

CORRECTANSWER:C

Q-11-30696663

Match the columns and find the correct combination

(A)a-I,b-iii,c-ii,d-iv

(B)a-I,b-iv,c-iii,d-ii

(C)a-ii,b-iv,c-I,d-iii

(D)a-ii,b-iii,c-I,d-iv

CORRECTANSWER:C

Q-12-30696879

Peristalsis occurs in

(A)Urethra

(B)Trachea

(a) Ptyalin (i) Lipids

(b) Pepsin (ii) Starch

(c) Steapsin (iii) DNA

(d) Nuclease (iv) Protien

(C)Bloodvessels

(D)Alimentarycanal.

CORRECTANSWER:D

Q-13-30970617

Phagocytic cells of liver are

(A)Acinarcell

(B)Deitercells

(C)Kupffer'scells

(D)Hensencells

CORRECTANSWER:B

SOLUTION:

Phagocyticcellsofliverarekupffer'scells

Q-14-30970633

The food mixed thoroughly with the acidic gastric juice of the

stomach by the churning movements of its muscular wall. What do

we call the food then?

(A)Bolus

(B)Chyle

(C)Chyme

(D)Chylomicron

CORRECTANSWER:C

SOLUTION:

Thefoodmixesthoroughlywiththeacidicgasticejuice

ofthestomachbythechurningmovementsofits

muscularwallandiscalledthechyme.

Q-15-30970642

The undigested and unabsorbed substances called faeces enters into

the caecum of large intestine through

(A)Pyloricsphincter

(B)Gastro-oesophagealsphincter

(C)Ileo-caecalvalve

(D)SphincterofOddi

CORRECTANSWER:C

SOLUTION:

Theundigestedandunabsorbedsubstancescalled

faecesentersintothecaecumoflargeintestinethrough

ileo-caecalvalve.

Q-16-30696301

Germs entering the body alongwith food are killed is alimentary

canal where pH is

CORRECTANSWER:C

Q-17-30696266

In gluconeogenesis

(A)Glucoseisconvertedintoglycogen

(B)Glucoseisconvertedintoglucose

(C)Sugarareconvertedintofats

(D)Glucoseisformedfromnoncarbohydrates

CORRECTANSWER:D

Q-18-30696204

Bile can be prevented to pass into duodenum by

(A)Pyloricvalve

(B)SphincterofBoyden

(C)SphincterofOddi

(D)Cardiacsphincter

CORRECTANSWER:C

Q-19-17934663

Glucose and amino acids are absorbed in the intestine by

(A)Activetransport

(B)Passivetransport

(C)Selectiveabsorption

(D)Osmosis

CORRECTANSWER:A

Q-20-13956623

Which of the following statements are incorrect about

chylomicrons?

(i) Chylomicrosn are produced in the epthelial cells of small

intestine.

(ii) It contains trigycerides, chloesterol and phospholipids.

(iii) They are protein coated small vesicles.

(iv) Chylomicrons are released from the epithelial cell into lacteals/

(A)iandiv

(B)iiandiii

(C)i,ii,iiiandiv

(D)noneofthese

CORRECTANSWER:D

Q-21-17934563

The given flowchart shows the fate of carbohydrates during

digestion in the human alimentary canal. Identify the enzymes

acting at stages indicated as A,B,C and D and selct the correct

option.

(A)A=amylase,B=madltase,C=lactase,D=invertase

(B)A=amylase,B=maltase,C=inbvertase,D=

lactase.

(C)A=amylase,B=invertase,C=maltase,D=lactase

(D)A=amylase,B=lactese,C=maltase,D=invertase

CORRECTANSWER:D

Q-22-30696231

Marasmus is due to deficieny of

(A)vitaminPyridoxine

(B)VitaminD/Calcium/Phosphorus

(C)Food

(D)Fat

CORRECTANSWER:C

Q-23-30696300

Succes entericus is

(A)Swollenareabetweenileumandrectum

(B)Intestinejuice

(C)Anyswellingingut

(D)Vermiformappendix

CORRECTANSWER:B

Q-24-30970648

Absence of enterokinase will affect the following process

(A)Amylose Maltose

(B)Proteoses Dipeptide

(C)Lipid Fattyacid+Glycerol

(D)Dipeptide aminoacid

CORRECTANSWER:B

Q-25-30696512

Dental formula shwos

(A)Structureofteeth

(B)Monophyodontordiphyodontcondition

(C)Numberandtypeofteethinbothjaws

(D)Numberandtypeofteethinonehalfofbothjaws.

CORRECTANSWER:D

Q-26-30696668

Lysozymes are found in

(A)Saliva

(B)Tears

(C)Bothsalivaandtears

(D)Mitochondria

CORRECTANSWER:C

Q-27-30696691

Nutrition involving engulfment of whole or parts of a plant or

animal in solid of liquid state is known as

(A)Holozoic

(B)Saprozoic

(C)Parasite

(D)Symbiotic

CORRECTANSWER:A

Q-28-30970653

Carbohydrate digestion beings in

(A)Stomach

(B)Mouth

(C)Intestine

(D)Alloftheabove

CORRECTANSWER:B

SOLUTION:

Carbohydratedigestionbeginsinmouthbysalivary

amylase.

Q-29-30696260

The swallowing of food from buccopharyngeal cavity to stomach is

called

(A)DeglutitIon

(B)Masticaton

(C)Paristalsis

(D)nonoftheabove

CORRECTANSWER:A

Q-30-17934551

Trypsin differs from pepsin in that

(A)Itdigestproteininalkalinemediumwhilepepsin

doessoinacidicmedium

(B)Both(a)and(b)

(C)Noneofthese

CORRECTANSWER:A

SOLUTION:

(c)Bilejuiceconstantbilesaltsandbilepigments.

Q-31-17934583

Which of the following option best respresents the enzyme

composition of panceratic juice

(A)Amylase,peptidase,trysinogen,rennin

(B)Amylase,pepsin,trypsinogen,maltase

(C)Peptidase,amylase,pepsin,rennin

(D)Lipase,amylase,trypsinogen,procarboxypeptidase

CORRECTANSWER:D

Q-32-17934657

What is the common between amino acids, fatty acids and glycerol

(A)Theseareallrichsourceofcalories

(B)Thesearethebuildersofprotoplasm

(C)Thesearetheendproductsofdigestionoftwo

categoriesoffoodconstituents

(D)Thesecanbestoredintheformoffat

CORRECTANSWER:C

SOLUTION:

(c)Proteinsarebrokendownintoaminoacidsduring

theprocessofdigestionandfinallyallfatsareconverted

intofattyacid,glycerolandmonoglycerides.

Q-33-30696218

Chymotrypsin is a component of

(A)Bile

(B)Pancreaticjuice

(C)Succusentericus

(D)Gastricjucie

CORRECTANSWER:B

Q-34-30696520

Animals do not synthesis

(A)Protien

(B)Vitamins

(C)Glycogen

(D)Phospholipids

CORRECTANSWER:B

Q-35-30696699

A patient is advised to specially consume more meat ,lentil ,milk

and eggs in diet when the patient suffers from

(A)Kwashiorkor

(B)Scurvy

(C)Rickets

(D)Anaemia

CORRECTANSWER:A

Q-36-30970636

Among the following, how many enzymes are present in pancreatic

juice: Trypsinogen, amylases, lipases, nucleosidases, nucleases,

chymotrypsinogen, enterokinase, procarboxy peptidase

CORRECTANSWER:B

SOLUTION:

Enzymespresentinpancreaticjuiceare:

Trypsinogen,amylases,lipases,nucleases,

chymotrypsinogenandprocarboxy-peptidase.

Q-37-30970661

Food bolus after passing through alkaline medium in the alimentary

canal is

(A)Chylomicron

(B)Chyme

(C)Chyle

(D)Fatbody

CORRECTANSWER:C

SOLUTION:

Foodbolusafterpassingthroughalkalinemediuminthe

alimentarycanalischyle.

Q-38-30970671

Cellulose digestion in ruminants occurs in

(A)Rumen

(B)Omasum

(C)Abomasum

(D)Reticulum

CORRECTANSWER:A

SOLUTION:

Cellulosedigestioninruminants(cud-chewinganimals)

occursinrumen.

Q-39-30696285

A person with bleedindg gums should add to his daily diet

(A)VitaminA

(B)VitaminB

(C)VitaminC

(D)VitaminD

CORRECTANSWER:C

Q-40-13956626

Which of the following statemetns is/are incorrect?

(i) Absroption of simple sugar, alcohol, some water and medicines

takes place in stomach.

(ii) Maximum water absorption occurs in large intestine.

(iii) Small intestine is the major site of digestion and absorption of

(iv) Fatty acid and glycerol are absorbed by lacteals.

(v) Nothing is absorbed in mouth and large intestine.

(A)i,ivandv

(B)vonly

(C)ivonly

(D)iiandiii

CORRECTANSWER:B

SOLUTION:

Inthemouthcertaindrugsareabsorbed.Inthelarge

intestine,water,somemineralsanddrugsareabsorbed.

Q-41-17934378

HCl is secreted by

(A)Zymogencells

(B)Oxynticcells

(C)Kupffercells

(D)Mucouscells

CORRECTANSWER:B

SOLUTION:

(b)Thfundicpartofstomachconsists2typeofcells,

chieforzymogeniccellsecretspepsinandoxynticor

parietalcellsecretesHCl.

Q-42-17934584

What will happen if the secretion of parietal cells of gastric glands

is blocked with an inhibitor?

(A)IntheabsenceofHClsecretion,inativepepsinogen

isnotconvertedintotheactiveenzymepepsin

(B)Enterokinasewillbenotbereleasedfromthe

duodenalmucosaandsotrypsinogenisnotconvertedto

trypsin

(C)Gastricjuicewillbedeficientinchymosin

(D)Gastricjuicewillbedeficientinpepsinogen

CORRECTANSWER:A

Q-43-30696239

Digestion is completed in

(A)Duodenum

(B)Ileum

(C)Stomach

(D)Cloaca

CORRECTANSWER:B

Q-44-30696296

Stimulation of acid secretion of stomach is due to

(A)Gastrin

(B)Histamine

(C)vagalactivation

(D)Alltheabove

CORRECTANSWER:D

Q-45-30696309

Emulasification of fat is carried out by

(A)Bilepigments

(B)Bilesalts

(C)HCL

(D)Pancreaticjuie

CORRECTANSWER:B

Q-46-30696696

Read the following statements and select the correct option.

Statement 1 : The human small intestine is the longest portion in the

alimentary canal.

Statement 2: Absorption of digested food requires a very large

surface area.

(A)Statementaiscorrect,biswrong

(B)Statementaaswellasstatementbarecorrect

(C)Statementbiscorrectaiswrong

(D)Bothstatementarewrong

CORRECTANSWER:B

Q-47-30970655

Prorennin is produced by

(A)IsletsofLangerhans

(B)Zymogencells

(C)Sertolicells

(D)Hepatocytes

CORRECTANSWER:B

SOLUTION:

Prorenninisproducedbyzymogenorchieforpeptic

cells.

Q-48-30970668

DNase and RNase enzymes produced by

(A)Salivaryglands

(B)Pancreas

(C)Stomach

(D)Intestine

CORRECTANSWER:B

SOLUTION:

DNA-aseandRNA-ase(nucleases)enzymes

producedbypancreas.

Q-49-30696243

Pancreas has double role of

(A)Storageanddigestion

(B)Digestionandabsorpton

(C)Digestionandendocrineactivity

(D)Noneoftheabove

CORRECTANSWER:C

Q-50-17934545

Rennin acts on milk proteins and converts

(A)Casinogenintocasien

(B)Caseinintoparacasein

(C)Caseinogenintoparacasein

(D)Paracaseinintocaseinogen

CORRECTANSWER:B

SOLUTION:

(c)Thetrypsinenzymeispresentinpancreaticjuice

whichissecretedbypancreas.

Q-51-13956636

Anxiety and eating spicy food together in an otherwise normal

human, may lead to

(A)indigestion

(B)jaundice

(C)diarrhoea

(D)vomiting.

CORRECTANSWER:A

SOLUTION:

Indigestionisadisorderinwhichthefoodisnotproperly

digestedinthebodyleadingtoafellingoffullness.The

causesofthisareinadequateenzymesceretion,

anixiety.Foodpoisoning,overeatingandspicyfood.

Q-52-13956536

Which of the following is not a salivary gland?

(A)Sublingual

(B)Submaxillary

(C)Lacrimal

(D)Parotid

CORRECTANSWER:C

SOLUTION:

Lacrimalglandispresentintheeyeandsecretestears.

Itisnotasalivarygland.

Q-53-17934362

The type of muscle present in the alimentary canal is

(A)Smoothmusclefibre

(B)Stripedmusclefibre

(C)Cardiacmusclefibre

(D)Bothaandb

CORRECTANSWER:A

Q-54-17934696

A pregnant female delivers a baby who suffers from stunted growth

, mental retardation, low intelligence quotient and abnormal skin.

This is the result of

(A)Oversecretionofparsdistalis

(B)Deficiencyofiodineindiet

(C)Lowsecretionofgrowthhormone

(D)Cancerofthethyroidgland

CORRECTANSWER:B

Q-55-30696189

Monophyodont teeth occur in

(A)Humans

(B)Forg

(C)Whale

(D)Rat

CORRECTANSWER:C

Q-56-30696198

Cardiac sphicnter protects back flow of

(A)Foodintoesophagus

(B)Bloodintoheart

(C)Bloodintoauricle

(D)Bloodintovenacava

CORRECTANSWER:A

Q-57-30696211

Mumps is infection of salivary glands

(A)Submandibular

(B)Submaxillary

(C)Sublingual

(D)Parotid

CORRECTANSWER:D

Q-58-17934653

Liver necrosis and muscular dystrophy are caused by the lack of

this trace element

(A)Arsenic

(B)Molybdenum

(C)Zinc

(D)Selenium

CORRECTANSWER:D

Q-59-17934385

Which of the following is correct pairing of the site of action and

the substrate of renin

(A)Stomach-Casein

(B)Stomach-Fat

(C)SmallIntestine-Protein

(D)Mouth-Starch

CORRECTANSWER:A

SOLUTION:

(a)Caseinisaphosphoproteinfoundinmilk.Itis

digestedbyreninenzyme.

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