A-R quiz on Digestion and Breathing

Assertion : Lipases of bile help in the emulsification of fats.

Reason : Lipases can break large fat droplets into smaller ones

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Assertion : HCl in the gastric juices maintain strong pH (1.5-2.5) in the stomach but does not digest the walls of stomach and duodenum.

Reason : Protection to intestinal wall and stomach from the enzymatic actions is provided by the mucous secreted by goblet cells, bicarbonates from pancreas, mucous and bicarbonates from Brunner's gland

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Assertion : Water and electrolytes are almost fully absorbed in the large intestine. Reason : In large intestine, haustral contractions (slow segmenting movements) roll the forming faeces over and over, causing absorption of water and electrolytes.

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• f both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Assertion : Oxyhaemoglobin dissociates near the organ tissue due to Bohr effect and oxygen is released.

Reason :Increased CO2 concentration reduces the affinity of haemoglobin for oxygen

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Assertion: Respiratory rhythm centre is moderated by pneumotaxic centre, located in the medulla region of the brain.

Reason: Pneumotaxic centre controls the switch 'ON' point of inspiration.

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Assertion : Aerobic animals are not truely aerobic.

Reason : They produce lactic acid anaerobically.

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Assertion: Chloride shift is exchange of Cl– of plasma and HCO3 of RBCs.

Reason: Chloride shift maintains an acid base balance between the RBCs and plasma.

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Assertion: Absorption of digested food mainly occurs in the stomach.

Reason: Stomach produces the hormone secretin and the intrinsic factor and it liquifies ingested food.

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Assertion : In human gut, small intestine is the longest part of digestive system. Reason : Different type of food like proteins, fats and carbohydrates are digested completely in this longest part of human alimentary canal.

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false

Assertion: Adult human being is not perfect in digestion of milk.

Reason: With age, man produces little or no lactase in the intestinal juice

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false