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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 3451. |
Which of the following is correct chronological order for the enzyme activity of some enzymes taking part in protein digestion? (Gujarat CET 2006) |
| A. | Pepsin \[\to \] Trypsin \[\to \] Peptidase |
| B. | Pepsin \[\to \] Peptidase \[\to \] Trypsin |
| C. | Trypsin \[\to \] Pepsin \[\to \] Peptidase |
| D. | Peptidase \[\to \] Trypsin \[\to \] Pepsin |
| Answer» B. Pepsin \[\to \] Peptidase \[\to \] Trypsin | |
| 3452. |
Which of the following processes does not take place when glucose in eaten? (JKCMEE 2002) |
| A. | Ingestion |
| B. | Digestion |
| C. | Absorption |
| D. | Assimilation |
| Answer» C. Absorption | |
| 3453. |
Which is a group of end products of carbohydrate digestion? |
| A. | Sucrose, galactose, maltose |
| B. | Glucose, galactose, fructose |
| C. | Maltose, glucose, galactose |
| D. | None of the above |
| Answer» C. Maltose, glucose, galactose | |
| 3454. |
Most digestion occurs in: |
| A. | mouth |
| B. | stomach |
| C. | small intestine |
| D. | large intestine |
| Answer» D. large intestine | |
| 3455. |
End products of protein digestion are: (Har. PMT 2005) |
| A. | sugars |
| B. | glucose |
| C. | amino acids |
| D. | nucleotides |
| Answer» D. nucleotides | |
| 3456. |
In humans, digestion of food is completed in the: (CPMT 2006) |
| A. | mouth |
| B. | stomach |
| C. | small intestine |
| D. | large intestine |
| Answer» D. large intestine | |
| 3457. |
What is the function of goblet cells? (MPPMT 2004) |
| A. | Production of HCl |
| B. | Production of mucin |
| C. | Production of enzyme |
| D. | Production of hormone |
| Answer» C. Production of enzyme | |
| 3458. |
The pH of succus entericus is: |
| A. | 7.6 |
| B. | 6.6 |
| C. | 5.6 |
| D. | 2 |
| Answer» B. 6.6 | |
| 3459. |
Which one is not found in intestinal juice? |
| A. | HCl |
| B. | Water |
| C. | Erepsin |
| D. | Maltase |
| Answer» B. Water | |
| 3460. |
Succus entericus is secreted by: (Karnataka CET 2007) |
| A. | Crypts of Lieberkuhn |
| B. | Brunner's gland |
| C. | Both [a] and [b] |
| D. | None of these |
| Answer» D. None of these | |
| 3461. |
Succus entericus is: (JCECE 2008) |
| A. | intestinal juice |
| B. | any swelling in gut |
| C. | vermiform appendix |
| D. | swollen area between ileum and rectum |
| Answer» B. any swelling in gut | |
| 3462. |
Ptyalin is secreted by: |
| A. | Gastric gland |
| B. | Salivary gland |
| C. | Digestive gland |
| D. | Brunner's gland |
| Answer» C. Digestive gland | |
| 3463. |
The enzyme which hydrolyses triglycerides to fatty acids and glycerol is called: (CBSE 2004) |
| A. | lipase |
| B. | pepsin |
| C. | maltase |
| D. | zymase |
| Answer» B. pepsin | |
| 3464. |
Fat is hydrolysed by enzyme lipase to yield: (PCS 2005) |
| A. | glycerine and water |
| B. | glycerol and fatty acids |
| C. | glycerol and amino acids |
| D. | fatty acids and amino acids |
| Answer» C. glycerol and amino acids | |
| 3465. |
The following is a scheme showing the fate of carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given: (Karnataka CET 2006) |
| A. | A = amylase, B = maltase, C = lactase, D = invertase |
| B. | A = amylase, B = maltase, C = invertase, D = lactase |
| C. | A = amylase, B = invertase, C = maltase, D = lactase |
| D. | A = amylase, B = lactase, C = maltase, D = invertase |
| Answer» E. | |
| 3466. |
Lactose is hydrolysed into: (COMEDK's 2007) |
| A. | fructose only |
| B. | glucose only |
| C. | glucose + fructose |
| D. | glucose + galactose |
| Answer» E. | |
| 3467. |
Lactase is found in: (MPPMT 2000) |
| A. | bile |
| B. | saliva |
| C. | intestinal juice |
| D. | pancreatic juice |
| Answer» D. pancreatic juice | |
| 3468. |
Which of these is not an enzyme? |
| A. | Urease |
| B. | Sucrase |
| C. | Maltose |
| D. | Amylase |
| Answer» D. Amylase | |
| 3469. |
Maltase converts: (Orissa JEE 2005; Pb. PMT 2007) |
| A. | maltose to glucose at pH greater than 7.0 |
| B. | maltose to glucose at pH lesser than 7.0 |
| C. | starch to maltose at higher pH than 7.0 |
| D. | maltose to alcohol |
| Answer» B. maltose to glucose at pH lesser than 7.0 | |
| 3470. |
Enzyme maltase in human gut acts on food at a pH of: |
| A. | less than seven to change starch into maltose |
| B. | more than seven to change starch into maltose |
| C. | less than seven to change maltose into glucose |
| D. | more than seven to change maltose into glucose |
| Answer» E. | |
| 3471. |
The enzyme invertase hydrolyses: |
| A. | starch to sucrose |
| B. | glucose to sucrose |
| C. | cellulose to starch |
| D. | sucrose to glucose and fructose |
| Answer» E. | |
| 3472. |
A lubricant, mucin in saliva is made up of: (Pb. PMT 2004) |
| A. | myosin |
| B. | glycoprotein |
| C. | phospholipids |
| D. | polysaccharides |
| Answer» C. phospholipids | |
| 3473. |
The digestion of starch by amylase is completed in the: (Kerala PMT 2003) |
| A. | mouth |
| B. | oesophagus |
| C. | stomach |
| D. | duodenum |
| E. | ileum |
| Answer» E. ileum | |
| 3474. |
Which of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (CBSE 2008) |
| A. | \[Stomach:\text{ }Fats\xrightarrow{Lipase}Micelles\] |
| B. | \[Duodenum:\text{ }Triglycerides~\xrightarrow{Tryp\sin }\]\[Monoglycerides\] |
| C. | \[Small\,\,intestine:\,\,Starch\xrightarrow{\alpha -amylase}\]\[Disaccharide\text{ }\left( Maltose \right)\] |
| D. | (d)\[Small\text{ }intestine:\text{ }Proteins\text{ }\xrightarrow{Pep\sin }\text{ }Amino\,\,\]\[acids\] |
| Answer» D. (d)\[Small\text{ }intestine:\text{ }Proteins\text{ }\xrightarrow{Pep\sin }\text{ }Amino\,\,\]\[acids\] | |
| 3475. |
Amylopsin acts upon: (BHU 2007) |
| A. | polypeptides |
| B. | polysaccharide in any medium |
| C. | polysaccharide in acidic medium |
| D. | polysaccharide in alkaline medium |
| Answer» E. | |
| 3476. |
During the process of digestion, the raw starch present in the diet is digested by: (PCS 2000) |
| A. | salivary amylase only |
| B. | pancreatic amylase only |
| C. | both the salivary and pancreatic amylases |
| D. | not digested at all |
| Answer» C. both the salivary and pancreatic amylases | |
| 3477. |
Just as hydrochloric acid is for pepsinogen, so is the: (MPPMT 2004) |
| A. | bile juice for fat |
| B. | glucagon for glycogen |
| C. | haemoglobin for oxygen |
| D. | enterokinase for trypsinogen |
| Answer» E. | |
| 3478. |
Which of the following processes will be affected by the absence of enterokinase? (Gujarat CET 2007) |
| A. | Amylose \[\to \] Maltose |
| B. | Proteoses \[\to \] Dipeptide |
| C. | Dipeptides \[\to \] Amino acid |
| D. | Lipid \[\to \] Fatty acid + glycerol |
| Answer» C. Dipeptides \[\to \] Amino acid | |
| 3479. |
Enterokinase helps in the conversion of: |
| A. | caseinogen to casein |
| B. | pepsinogen to pepsin |
| C. | protein to polypeptides |
| D. | trypsinogen into trypsin |
| Answer» E. | |
| 3480. |
Trypsinogen is changed to trypsin by: (PCS 2004; Kerala PMT 2008) |
| A. | gastrin |
| B. | enterogastrone |
| C. | enterokinase |
| D. | secretin |
| Answer» D. secretin | |
| 3481. |
In the absence of enterokinase, the digestion of........... would be affected in our intestine. (Karnataka CET 2009) |
| A. | starch |
| B. | albumin |
| C. | maltose |
| D. | aminoacid |
| Answer» C. maltose | |
| 3482. |
Chymotrypsin acts upon: |
| A. | starch in duodenum |
| B. | proteins in stomach |
| C. | proteins in duodenum in acidic medium |
| D. | proteins in duodenum in alkaline medium |
| Answer» E. | |
| 3483. |
Daily secretion of saliva in man is about: (Orissa JEE 2004) |
| A. | 100 mL |
| B. | 250 mL |
| C. | 500mL |
| D. | 1000 mL |
| Answer» E. | |
| 3484. |
Trypsin changes: |
| A. | fats into fatty acids |
| B. | proteins into peptones |
| C. | maltose into its components |
| D. | starch and glycogen into maltose |
| Answer» C. maltose into its components | |
| 3485. |
Trypsin helps in digestion of proteins in: |
| A. | stomach in acidic medium |
| B. | duodenum in acidic medium |
| C. | stomach in alkaline medium |
| D. | duodenum in alkaline medium |
| Answer» E. | |
| 3486. |
Trypsin differs from pepsin in that: |
| A. | it digests proteins in alkaline medium and not in acidic medium |
| B. | it digests proteins in acidic medium and not in alkaline medium |
| C. | both [a] and [b] |
| D. | none of the above |
| Answer» B. it digests proteins in acidic medium and not in alkaline medium | |
| 3487. |
The digestive enzyme that is not found in human pancreatic juice is: (Kerala PMT 2006) |
| A. | lipase |
| B. | trypsin |
| C. | amylase |
| D. | nuclease |
| E. | nucleotidase |
| Answer» F. | |
| 3488. |
Food bolus after passing through alkaline medium is: (Orissa JEE 2006) |
| A. | chyle |
| B. | chyme |
| C. | fat body |
| D. | chylomicron |
| Answer» B. chyme | |
| 3489. |
DNase and RNase are the enzymes secreted by: (BHU 2003) |
| A. | pancreas |
| B. | stomach |
| C. | intestine |
| D. | mouth glands |
| Answer» B. stomach | |
| 3490. |
Carboxy peptidase is an enzyme secreted by: (Kerala PMT 2004) |
| A. | stomach |
| B. | pancreas |
| C. | intestine |
| D. | gall bladder |
| E. | salivary gland |
| Answer» C. intestine | |
| 3491. |
Chymotrypsin is secreted by: (Manipal 2004) |
| A. | mouth |
| B. | intestine |
| C. | stomach |
| D. | pancreas |
| Answer» E. | |
| 3492. |
Digestion of carbohydrates is affected by: |
| A. | pepsin |
| B. | erepsin |
| C. | steapsin |
| D. | amylopsin |
| Answer» E. | |
| 3493. |
The enzyme trypsin is found in: (Kerala PMT 2002; St. Johns MC 2002) |
| A. | mucus |
| B. | saliva |
| C. | intestinal juice |
| D. | pancreatic juice |
| Answer» E. | |
| 3494. |
Digestion is defined as conversion of: |
| A. | nondiffusible food elements into diffusible constituents |
| B. | large food particles into smaller ones |
| C. | soluble food into protoplasm |
| D. | starch into glycogen |
| Answer» B. large food particles into smaller ones | |
| 3495. |
Canal system is a characteristic of [BHU 1982, 85, 2000, 02; CPMT 1996; CBSE PMT 1999, RPMT 1999] |
| A. | Hydra |
| B. | Sponge |
| C. | Sea anemone |
| D. | Sea urchin |
| Answer» C. Sea anemone | |
| 3496. |
The most distinctive character of sponge is [EAMCET 1998] |
| A. | Presence of choanocytes |
| B. | Unicellular |
| C. | Marine |
| D. | Asexual reproduction |
| Answer» B. Unicellular | |
| 3497. |
Sponges free swimming larva is called as [EAMCET 1998; CPMT 2000] |
| A. | Veliger |
| B. | Trochophore |
| C. | Parenchymula |
| D. | Bipinnaria |
| Answer» D. Bipinnaria | |
| 3498. |
Sycon belongs to a group of animals which are best described as [CBSE PMT 2003] |
| A. | Unicellular or acellular |
| B. | Multicellular without any tissue organisation |
| C. | Multicellular with a gastrovascular |
| D. | Multicellular having tissue organisation, but no body cavity |
| Answer» C. Multicellular with a gastrovascular | |
| 3499. |
Canal system in porifera is not concerned with [AFMC 2005] |
| A. | Respiration |
| B. | Nutrition |
| C. | Sexual reproduction |
| D. | None of these |
| Answer» D. None of these | |
| 3500. |
Which of the following are 'multicellular grade' organisms [AFMC 1997; BVP 2004] |
| A. | Sponges |
| B. | Coelenterates |
| C. | Prokaryotes |
| D. | Vertebrates |
| Answer» B. Coelenterates | |