Biology - Mock Test 99

Question 981

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on ?

A) Membrane potential B) Accumulation of K ions C) Proton gradient D) Accumulation of Na ions

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Question 982

______ lies in front of esophagus?

A) Trachea B) Glottis C) Larynx D) Epiglottis

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Question 983

Which of the following statements is true about Trachea in a respiratory system?

A) It functions as passages of air to each alveolus B) It functions for sound production C) It Acts as passage of air to bronchi D) It Lowers the surface tension

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Question 984

Which one of the followings is not part of the large intestine?

A) rectum B) colon C) cecum D) duodenum

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Question 985

Aggregates of lymphoid tissue present in the distal portion of the small intestine are known as ?

A) Villi B) Peyer’s patches C) Rugae D) Choroid plexus

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Question 986

Bile salts act as activator of which enzyme?

A) Pepsinogen B) Trypsinogen C) Lipase D) Pancreatic amylase

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Question 987

Name the hormone that stimulates the secretion of gastric juice ?

A) Renin B) Enterokinase C) Enterogastrone D) Gastrin

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Question 988

Bile contribution to digestion is ?

A) Nucleic acid metabolism B) Phagocytosis C) Emulsification of dietary lipids D) Carbohydrate digestion

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Question 989

A young infant may be feeding entirely on mother's milk which is white in colour but the stool which the infant passes out is quite yellowish. What is this yellow colour due to ?

A) Pancreatic juice poured into duodenum B) Intestinal juice C) Bile pigments passed through bile juice D) Undigested milk protein casein

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Question 990

What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?

A) Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin B) Gastric juice will be deficient in chymosin C) Gastric juice will be deficient in pepsinogen D) In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin.

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