NEET MCQ (Digestion and absorption)

Digestion and absorption 

 22. The Ph of amylases present in saliva is

A. 6.7

B. 7.4

C. 8

D. 2.5

Answer: A

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23. Tonsils are enlargements of

A. Lymphoid tissue

B. Adenoid tissue

C. Larynx

D. Sub-lingual gland

Answer: A 

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24. One of the following ion is used for the activation of ptyalin and maltase

A. Sodium ions

B. Potassium ions

C. Chloride ions

D. None of these

Answer: C

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25. The largest gland in the human body is

A. Liver

B. Pancreas

C. Gastric gland

D. Adrenal

Answer: A

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26. Cholecystitis refers to

A. Gall bladder

B. Stomach

C. Spleen

D. Lungs

Answer: A

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27. Alkaline nature of bile is due to

A. NaCl

B. NaHCO3

C. KOH

D. NaOH

Answer: B

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28. The enzyme enterokinase helps in the conversion of

A. Casein into paracasein

B. Pro-rennin into rennin

C. Trypsinogen into trypsin

D. Proteins into peptides

Answer: C

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29. Milk protein casein is coagulated digested by

A. Pepsin

B. Trypsin

C. Rennin

D. Both (1) and (3)

Answer: D

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30. Chyme formed in stomach is further transformed into

A. Chyle

B. Colloidal material

C. Soft solid substance

D. Fats

Answer: A

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31. Paneth cells are found in

A. Crypts of Lieberkuhn

B. Peyer 's patches

C. Islets of Langerhans

D. Gastric glands

Answer: A

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32. In acute constipation, purgatives that are common to stimulate intestinal peristalsis and evacuation of fluid feces contain salts of

A. Sodium

B. Magnesium

C. Potassium

D. Calcium

Answer: B

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33. A prolonged constipation may cause

A. Hemorrhoids

B. Ulcers

C. Cholera

D. Dysentry

Answer: A

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34. Functional units of food absorption are

A. Crypts of Lieberkuhn

B. Peyer's patches

C. Villi

D. Brunner's glands

Answer: C

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35. Pungent odour of faeces is due to

A. Skatole

B. Methyl mercaptan

C. Hydrogen sulpfide

D. Ammonia

Answer: A

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36. Mark the odd one

A. Gastrin

B. Trypsin

C. Secretin

D. Enterocrinin

Answer: B

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37. Which one of the following hormones inhibits gastric secretion

A. Enterogastrone

B. GIP

C. Both (I) and (2)

D. Enterocrinin

Answer: C

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38. If you chew on a piece of bread long enough, it will begin to taste sweet because

A. The sugar contents are drawn out

B. Ptyline converts starch into maltose

C. It does not taste sweet

D. The taste buds are stimulated by chewing

Answer: B

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39. Digestion is completed in

A. Duodenum

B. Ileum

C. Stomach

D. Cloaca

Answer: B

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40. Enterocrinin acts on

A. Gall bladder

B. Intestinal glands

C. Trypsinogen

D. Gastric glands

Answer: B

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41. Lactose is hydrolysed into

A. Glucose + Maltose

B. Glucose+ Fructose

C. Fructose

D. Gluc

ose + Galactose

Answer: D

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42. In small intestine, the pH value is

A. 7

B. 8

C. 8.5-9.0

D. 2.5-4.5

Answer: B

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