Tag: digestion

Quizzes (15) Questions (200)

Questions Related to digestion

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Inhibition of gastric and stimulation of gastric, pancreatic and bile secretions are controlled by hormones ____________________.

  1. Gastrin, secretin, enterokinin and cholecystokin

  2. Enterogastrone, gastrin, pancreozymin and cholecystokinin

  3. Gastrin, enterogastrone, cholecystokinin and pancreozymin

  4. Secretin, enterogastrone, gastrin and enterokinin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Enterogastrone inhibits gastric secretion, while gastrin stimulates it. Pancreozymin and cholecystokinin stimulate pancreatic and bile secretions, respectively.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Valves of Kerckring occur in

  1. Between right auricle right ventricle

  2. Left auricle and left ventricle

  3. Stomach and duodenum

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

Valves of Kerckring, also known as plicae circulares, are large circular folds of the mucosa and submucosa found in the small intestine to increase surface area for absorption.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Digested lipids are absorbed from lacteals as 

  1. Triglycerides

  2. Diglycerides

  3. Monoglycerides

  4. Free fatty acids
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Digested lipids (fatty acids and monoglycerides) are re-esterified into triglycerides within the intestinal epithelial cells. These are then packaged into chylomicrons and absorbed into the lacteals.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Succus entericus is secreted by

  1. Crypts of Lieberkuhn

  2. Brunners glands

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Succus entericus, or intestinal juice, is primarily secreted by the Crypts of Lieberkuhn. Brunner's glands are located in the duodenum and secrete alkaline mucus, not the full composition of succus entericus.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

In the absence of enterokinase, digestion would be affected in intestine of

  1. Maltose

  2. Starch

  3. Albumin

  4. Amino acid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Enterokinase is an enzyme that activates trypsinogen into trypsin. Trypsin is essential for activating other pancreatic proteases, which are required for the digestion of proteins like albumin.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

If for some reasons our goblet cells are non-functional. This will adversely affect

  1. Secretion of sebum from sebaceous glands

  2. Maturation of sperms

  3. Smooth movement of food down the intestine

  4. Production of somatostatin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Goblet cells secrete mucus, which acts as a lubricant in the digestive tract. A lack of mucus would lead to friction and difficulty in the movement of food through the intestine.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

The cells lining the base of intestinal glands that secrete lysozyme are

  1. Brunners gland

  2. Parietal cells

  3. Neck cells

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

Paneth cells are located at the base of the Crypts of Lieberkuhn and are known to secrete antimicrobial substances, including lysozyme, to protect the intestinal lining.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

In Escherichia coli, how many codons code for the standard amino-acids?

  1. $64$
  2. $60$
  3. $61$
  4. $20$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are 64 total codons. Of these, 61 code for the 20 standard amino acids, while the remaining 3 are stop codons that do not code for any amino acid.

Multiple choice bio-chemistry digestion digestive glands liver pancreas
Lining of intestine of man is ________________.

  1. Brush bordered

  2. Ciliated

  3. Non-keratinised

  4. Keratinised
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The outer surface of columnar epithelial cells lining the intestine of man is brush-bordered. It is made up of microvilli that greatly increase the surface area for absorption.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Which of the following statement is not correct?

  1. Burner's glands are present in the submucosa of stomach and secrete pepsinogen

  2. Goblet cells are present in the mucosa of intestine and secrete mucus

  3. Oxyntic cells are present in the mucosa of stomach and secrete HCl

  4. Acini are present in the pancreas and secrete carboxypeptidase
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The Burner's glands are present in the submucosa of the small intestine and secrete an alkaline fluid rich in mucin that protects the duodenal surface of the small intestine from the action of the acidic chyme.
So, the correct answer is 'Burner's glands are present in the submucosa of the stomach and secrete pepsinogen'.