Chapter 16

Action of which enzyme produces glucose? (a) Maltase (b) Lactase (c) Sucrase (d) All of these

Action of which enzyme produces only glucose? (a) Maltase (b) Lactase (c) Sucrase (d) All of these

Where we use term feaces for undigested and unabsorbed food particle in alimentary canal. (a) Jejunum (b) Colon (c) Rectum (d) End of ileum

Where faecal matters are temporarily stored till defecation? (a) Colon (b) Caecum (c) Ileum (d) Rectum

The activities of gastrointestinal are under (a) Neural control only (b) Hormonal control only (c) Neither hormonal nor neural control (d) Neural and hormonal control

The activities of gastrointestinal are under (a) Neural control only (b) Hormonal control only (c) Neither hormonal nor neural control (d) Neural and hormonal control

The muscular activities of different parts of alimentary canal also be regulated by (a) Local neural control (b) CNS neural control (c) Both (a) and (b) (d) None of these

Secretion of saliva can be stimulated by (a) Sight of food (b) Smell of food (c) Presence of food in oral cavity (d) All of these

In addition to controlling the neurons, hormones also influence the (a) Gastric secretions (b) Intestinal secretions (c) Muscular activities of different parts of alimentary canal (d) All of these

Hormonal control of the secretion of digestive juice is carried out by local, produced by \(\quad\) and \(\quad\) mucosa. (a) Neurotransmitters, liver, pancreas (b) Hormones, Liver, pancreas (c) hormones, Gastric, intestinal (d) Neurotransmitters, gastric, intestinal

Absorption of digested food is carried out by (a) Passive method (b) Active transport (c) Facilitated transport (d) All of these

Glucose and amino acids are absorbed in the intestine by (a) Active transport (b) Passive transport (c) Selective absorption (d) Osmosis

Fructose and some amino acids are absorbed by (a) Active transport (b) Diffusion (c) Facilitated transport (d) Osmosis

A small amount of monosaccharide like glucose, amino acids and some electrolytes like chloride ions are generally absorbed by (a) Active transport (b) Simple diffusion (c) Facilitated transport (d) Osmosis

Amino acids, monosaccharide, electrolytes like \(\mathrm{Na}^{+}\) are mainly absorbed by (a) Osmosis (b) Passive transport (c) Facilitated transport (d) Active transport

Which of the following statement is wrong about Chylomicrons? A. Chylomicrons are produced in the epithelial cells of small intestine. B. It contain triglycerides, cholesterol and phospholipids. C. It is protein coated small vesicles. D. Chylomicrons released from the epithelial cell into lacteals. (a) \(\mathrm{A}\) and \(\mathrm{D}\) only (b) \(\mathrm{B}\) and \(\mathrm{C}\) only (c) All of these (d) None of these

Chylomicrons are concerned with the (a) Digestion of fats (b) Absorption of proteins (c) Digestion of protein (d) Absorption of fats

The absorbed substances finally reach the tissues which utilize them for their activities. This process is called (a) Assimilation (b) Emulsification (c) Catabolism (d) Digestion

Vomit center is situated at (a) Pons (b) Mid-brain (c) Cerebellum (d) Medulla

Defecation (a) Is a voluntary process (b) Is carried out by a mass peristaltic movement (c) Both (a) and (b) (d) Is otherwise known as ingestion

Which of the following statements is incorrect? (a) Faecal accumulation in the rectum initiates a neural reflex causing an urge for its removal. (b) Reflex of vomiting is controlled by medulla. (c) Irregular bowel movements cause constipation. (d) In diarrhea the absorption of food is increased.

Marasmus is characterized by (a) Thinning of limbs (b) Skin becomes dry, thin and wrinkled (c) Decreases growth rate (d) All the above

Maximum absorption of digested food takes place in (a) Mouth (b) Stomach (c) Small intestine (d) Large intestine

Absorption of simple sugar, water and alcohol takes place in (a) Mouth (b) Stomach (c) Small intestine (d) Large intestine

Mouth can absorb (a) Fatty acid (b) Certain drugs (c) Alcohol (d) All of these

Jaundice occurs due to the increasing level of (a) \(\mathrm{CaCO}_{3}\) (b) \(\mathrm{HCO}_{3}\) (c) Bile pigments (d) \(\mathrm{CO}_{2}\)

Which of the following are parasites of intestine? (a) Tapeworm and Roundworm (b) Threadworm and Hookworm (c) Pinworm (d) All of these

Jaundice is a disorder of (a) Excretory system (b) Skin and eyes (c) Digestive system (d) Circulatory system

The cause(s) of indigestion is/are (a) Inadequate enzyme secretion (b) Anxiety (c) Food poisoning, over eating and spicy food (d) All the above

The abnormal frequent bowel movement and increased liquidity of faecal discharge is known as (a) Constipation (b) Vomiting (c) Diarrhoea (d) Indigestion

Swelling of gut is the most common ailment due to (a) Bacterial infections (b) Viral infections (c) Infection of intestinal parasites (e.g., different types of worms) (d) All the above

Which of the following is correct about vomiting? (a) Ejection of stomach content through mouth. (b) It is a reflex action. (c) A feeling of nausea precedes vomiting. (d) All of the above

One gram of fat produces (a) \(4.1 \mathrm{kcal}\) of chemical energy (b) \(9.45 \mathrm{kcal}\) of chemical energy (c) \(7.0 \mathrm{kcal}\) of chemical energy (d) \(5.0 \mathrm{kcal}\) of chemical energy

The amount of heat liberated from the complete combustion of \(1 \mathrm{gm}\) of food in a bomb calorimeter is known as its (a) gross caloric value (b) gross energy value (c) physiological value (d) both (a) and (b)

Assertion: Process of conversion of complex food substances to simple absorbable forms is called digestion. Reason: Biomacromolecules in food cannot be utilized by our body in their original form.

Assertion: Tounge contains receptor for taste. Reason: The upper surface of the tounge has small projections called papillae, all of which bear taste buds which act as receptor for taste.

Assertion: Large intestine also shows the presence of villi like small intestine. Reason: Absorption of most substance takes place in large intestine.

Assertion: Lipases of bile helps in the emulsification of fats. Reason: Lipases can break large fat droplets into smaller ones.

Assertion: Presence of \(\mathrm{HCl}\) in stomach is necessary for the process of digestion. Reason: HCl kills and inhibits the growth of bacteria in the stomach.

Assertion: Mucosal epithelium secretion helps in lubrication. Reason: Mucosal epithelium has goblet cells which secretes mucus.

Assertion: The vermiform appendix which is a vestigeal organ arises from ileum. Reason: Appendix is a small blind sac which hosts some non symbiotic bacteria.

Assertion: Pancreas is a compound organ. Reason: Pancreas contains both exocrine and endocrine tissues.

Assertion: The chemical process of digestion is initiated in the oral cavity. Reason: Saliva contains the hydrolytic enzyme salivary amylase.

Assertion: Jaundice is the yellowish discolouration of eye and skin. Reason: It occurs due to the deposition of bile pigments.

Assertion: Pharynx serves as common passage for air and food Reason: Trachea and oesophagus open into pharynx

Assertion: Saliva is antibacterial in nature Reason: Saliva contain lysozyme

Assertion: Brunner's gland helps in protection of intestinal mucosa from acid Reason: Brunner's gland also secretes mucus

Assertion: No significant digestive activity occur in large intestine Reason: Function of large intestine is absorption of some water, minerals and certain drugs.

Assertion: Various type of movements are generated by muscularis layer of the small intestine Reason: These movements help in a through mixing up of the food with various secretions in intestine

Assertion: Villi is supplied with a large lymph vessels called the lacteals. Reason: Chylomicrons transported via lacteals