Tag: digestion and absorption

Quizzes (37) Questions (218)

Questions Related to digestion and absorption

Multiple choice biology digestion and absorption liver functions of the liver secretory organs

The cells which destroy worn out white and red blood corpuscles, bacteria and other microorganisms passing through liver are

  1. B-cells

  2. T-cells

  3. Oxytocin

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

Kupffer cells are the resident macrophages of the liver that phagocytose old blood cells and pathogens.

Multiple choice biology digestion and absorption liver functions of the liver secretory organs

The amount of bile released is in proportion to the amount of

  1. Fat in meal

  2. Carbohydrate in meal

  3. Protein in meal

  4. All the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bile release is triggered by the presence of chyme in the duodenum, specifically the fat content which stimulates the release of the hormone cholecystokinin (CCK). CCK causes the gallbladder to contract, releasing bile to emulsify the fats.

Multiple choice biology digestion and absorption liver functions of the liver secretory organs

Maximum energy is available on complete oxidation of

  1. Glucose

  2. Fat

  3. Protein

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

Fats (lipids) have a higher energy density than carbohydrates or proteins because they are more reduced. Upon complete oxidation, fats yield approximately 9 kcal/g, whereas carbohydrates and proteins yield approximately 4 kcal/g.

Multiple choice biology digestion and absorption liver functions of the liver secretory organs

Which ones are bile salts

  1. Haemoglobin and biliverdin

  2. Bilirubin and biliverdin

  3. Bilirubin and haemoglobin

  4. Sodium glycolate and taurocholate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bile salts are primarily sodium and potassium salts of glycocholic and taurocholic acids. They are essential for the emulsification of fats.

Multiple choice biology digestion and absorption liver functions of the liver secretory organs

It is not a function of liver

  1. Production of bile

  2. Glycogen storage

  3. Production of insulin

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

The liver performs many functions like bile production, glycogen storage, and detoxification. Insulin is produced by the beta cells of the islets of Langerhans in the pancreas.