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biology
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biology mcqs
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Digestive System & Nutrition MCQs

Multiple-choice questions on the human digestive system and nutrition, covering various biological concepts and physiological processes.

Test Your Knowledge

Showing questions 81 - 100 of 143

81. In human teeth, which help in cutting

Canine
Incisor
Molar
Premolar

In human teeth, incisors are the front teeth specifically designed for cutting and biting food .

82. HCl is secreted by which of the following cell of stomach

Chief cells
Parietal cell (Oxyntic cells)
Peptic cells
Goblet cells

is due to excessive intake of alcohol . Chronic alcohol consumption leads to the accumulation of fat in liver cells , which can progress to more severe liver diseases like cirrhosis .

83. Glisson’s capsules are present in

Liver
Lung
Kidney
Stomach

Glisson’s capsules are present in the liver . This is a fibrous capsule that encloses the liver.

84. Pulp cavity of teeth is lined by

Odontoblast
Chondroblast
Osteoblast
Amyloblast

The pulp cavity of teeth is lined by odontoblast cells . Odontoblasts are responsible for the formation of dentin, which makes up the bulk of the tooth.

85. Secretion of gastric juice is controlled by

Gastrin
Chlolecystokinin
Enterogastrin
None of these

Secretion of gastric juice is primarily controlled by the hormone Gastrin . Gastrin stimulates the gastric glands to release hydrochloric acid and pepsinogen .

86. Enzyme present in saliva is

Maltase
Ptyalin
Sucrase
Invertase

The enzyme present in saliva is Ptyalin . Ptyalin, also known as salivary amylase, initiates the digestion of carbohydrates in the mouth.

87. Which of the following metal is present in vitamin B12

Cobalt
Copper
Zinc
Magnesium

Cobalt is the metal present in Vitamin B12 . Vitamin B12 is also known by its chemical name, Cobalamine .

88. Kupffer cells are present in

Liver
Pancreas
Small intestine
Large intestine

Kupffer cells are present in the liver . They are specialized macrophages (phagocytes) found in the liver, involved in clearing debris and pathogens from the blood .

89. Teeth of rabbits are

Thecodont
Diphyodont
Heterodont
All of these

The teeth of rabbits exhibit all these characteristics : They are thecodont (teeth set in sockets) , diphyodont (two sets of teeth during life), and heterodont (having different types of teeth like incisors, premolars, and molars, despite lacking canines) .

90. Crypts of lieberkuhn are present in :

Intestine
Stomach
Oesophagus
All of these

Crypts of Lieberkuhn are present in the intestine . They are located between the villi of the small intestine and are responsible for secreting intestinal juice (succus entericus) .

91. Succus entericus is also called :

Gastric juice
Intestine juice
Bile juice
Saliva

Succus entericus is also called Intestine juice . It is the digestive fluid secreted by the small intestine.

92. Dental formula of rabbit is :

2033/1023
2122/2122
2123/2123
3142/3142

The dental formula of a rabbit is 2033/1023 . This formula accounts for their incisors, absence of canines, and number of premolars and molars.

93. Deamination occurs in

Kidney
Liver
Nephron
Both 1 and 2

Deamination primarily occurs in the liver . In mammals, ammonia resulting from deamination is converted into urea in the liver, which is then excreted by the kidneys .

94. Digestion of protein is completed in

Stomach
Duodenum
Ileum
Duodenum and ileum

Digestion of protein begins in the stomach and is completed in the duodenum and ileum within the small intestine. Various enzymes like trypsin and aminopeptidase further break down proteins into amino acids .

95. Enterogasterone is

Hormone secreted by mucosa
Enzyme secreted by mucosa
Hormone secreted by duodenal mucosa
Secreted by endocrine gland related to digestion

Enterogasterone is a hormone secreted by duodenal mucosa . Its main function is to inhibit gastric juice secretion . It is also known as Gastric Inhibitory Peptide (GIP) .

96. Part of bile juice useful in digestion is

Bile salt
Bile pigment
Bile matrix
All of them

The part of bile juice useful in digestion is bile salt . Bile salts are essential for the emulsification of fats , making them accessible for enzymatic digestion. Bile pigments are metabolic waste products .

97. bile secretion is proportional to the concentration of

Protein
Fat
Carbohydrate
None of these

Bile secretion is proportional to the concentration of fat . The presence of fats in the duodenum stimulates the release of hormones like CCK, which in turn causes the gall bladder to contract and release bile .

98. Secretion of pancreatic juice is stimulated by

Gastrin
Secretin
Enterogastrone
Enterokinase

Secretion of pancreatic juice is primarily stimulated by Secretin . Secretin stimulates the exocrine pancreas to secrete water and bicarbonate ions .

99. Just as hydrochloric acid is for pepsinogen, so is the :

haemoglobin oxygen
enterokinase to typsinogen
bile juice to fat
glucagons to glycogen

This is an analogy. Hydrochloric acid (HCl) activates pepsinogen to pepsin . Similarly, enterokinase activates trypsinogen to trypsin . Both are examples of inactive proenzymes requiring an activator.

100. What is the function of globlet cells

Production of enzyme
Production of mucin
Production of hormone
Production of HCl

The function of goblet cells is the production of mucin . Mucin is a glycoprotein that forms mucus, providing lubrication and protection for the digestive tract lining, which is essential for the smooth movement of food .

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Human Phsyiology: MCQ Test

Excretory Products & Their Elimination: MCQs

biology

class 11
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chemistry

class 12

physics

miscellaneous

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biology mcqs

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