Tag: parts of the digestive system

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Questions Related to parts of the digestive system

Multiple choice parts of the digestive system digestive system of human human digestive system digestion and absorption biology nutrition deficiency diseases digestive system

One of the- following is needed for the conversion of trypsinogen into trypsin  _____________.

  1. HCI

  2. Enterokinase

  3. Lipase

  4. Zymase
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In the presence of enterokinase, inactive trypsinogen is converted into active trypsin.

So, the correct answer is 'Enterokinase'

Multiple choice parts of the digestive system digestive system of human human digestive system digestion and absorption biology nutrition deficiency diseases digestive system

Rennin acts on ______________________.

  1. Milk changing casein into calcium paracaseinate at 7.2 8.2 pH

  2. Proteins in stomach

  3. Fat in intestine

  4. Milk changing casein into calcium paracaseinate at 1 3 pH
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rennin (chymosin) is an enzyme found in the stomachs of young mammals that coagulates milk by converting casein into calcium paracaseinate in an acidic environment (pH 1-3).

Multiple choice parts of the digestive system digestive system of human human digestive system digestion and absorption biology nutrition deficiency diseases digestive system

Which pair reaches the stomach totally undigested?

  1. Fat, cellulose

  2. Starch, cellulose

  3. Protein, starch

  4. Starch, fat
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cellulose cannot be digested by human enzymes, and fats are not digested in the stomach because gastric lipase is not effective at the stomach's low pH and lacks emulsification.

Multiple choice parts of the digestive system digestive system of human human digestive system digestion and absorption biology nutrition deficiency diseases digestive system

Which gastric secretion is correctly matched with its source

  1. Pepsin Chief cells

  2. Chymotrypsin Parietal cells

  3. HCl Goblet cells

  4. Mucus Oxyntic cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chief cells (or zymogenic cells) in the gastric glands secrete pepsinogen, which is the inactive precursor to pepsin.

Multiple choice parts of the digestive system digestive system of human human digestive system digestion and absorption biology nutrition deficiency diseases digestive system

Semi-indispensible amino acids are

  1. Arginine and histidine

  2. Methionine and threonine

  3. Leucine and isoleucine

  4. Arginine and lysine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Arginine and histidine are considered semi-essential (or semi-indispensable) amino acids because the body can synthesize them, but often not in sufficient quantities during growth or stress.

Multiple choice parts of the digestive system digestive system of human human digestive system digestion and absorption biology nutrition deficiency diseases digestive system

Three major types of cells in stomach are ________________.

  1. Mucous cells, chief cells, oxyntic cells

  2. Mucous cells, chief cells, enteroendocrine cells

  3. Mucous cells, enteroendocrine cells, oxyntic cells

  4. Enteroendocrine cells, chief cells, oxyntic cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The gastric glands contain mucous cells (secreting mucus), chief cells (secreting pepsinogen), and oxyntic/parietal cells (secreting HCl).

Multiple choice parts of the digestive system digestive system of human human digestive system digestion and absorption biology nutrition deficiency diseases digestive system

Gastric juice contains

  1. HCl and pepsin

  2. pepsin and trypsin

  3. trypsin and HCI

  4. amylopsin and pepsin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gastric juice comprising a mixture of substances, including pepsin and hydrochloric acid, secreted by glands of the stomach. Its principal function is to break down proteins into polypeptides during digestion.

Hence, the correct answer is 'HCl and pepsin'

Multiple choice parts of the digestive system digestive system of human human digestive system digestion and absorption biology nutrition deficiency diseases digestive system

Enzyme pepsin in the gastric juice helps in the digestion of :-

  1. carbohydrates

  2. fats

  3. nucleic acids

  4. proteins
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pepsin is the chief digestive enzyme in the stomach that stomach that breaks down proteins. Cells produce pepsinogen that is produced to act on mucus by epithelial cells of the stomach that helps to protect the lining of the stomach from corrosive hydrochloric acid and pepsin.

So, the correct option is 'Proteins'.