Tag: digestion and absorption

Quizzes (37) Questions (218)

Questions Related to digestion and absorption

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

Pepsin is an enzyme which acts in

  1. acidic medium in the stomach

  2. alkaline medium in the stomach

  3. alkaline medium in the duodenum

  4. acidic medium in the duodenum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Pepsin is an enzyme which is released by zymogenic cells, the chief cells in the stomach and that degrades food proteins into peptides.
  •  It is most active in acidic environments.
  •  It exhibits maximal activity at pH 2.0 and is inactive at pH 6.5. Hence, Pepsin is an enzyme which acts in an acidic medium in the stomach.
So, the correct answer is 'acidic medium in the stomach'.

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

Which of the following molecules is incorrectly paired with its source?

  1. Lysozyme-gastric juices

  2. Histamine-injured cells

  3. lnterferons-virus infected cells

  4. Immunoglobulins-plasma cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Histamine is an organic nitrogenous compound involved in local immune responses, as well as regulating physiological function in the gut and acting as a neurotransmitter for the brain, spinal cord, and uterus. Histamine is involved in the inflammatory response and has a central role as a mediator of itching. 

Interferons (IFNs) are a group of signaling proteins made and released by host cells in response to the presence of several viruses. In a typical scenario, a virus-infected cell will release interferons causing nearby cells to heighten their anti-viral defenses.
Immunoglobulins, also known as antibodies, are glycoprotein molecules produced by plasma cells (white blood cells). 
Lysozyme is a special enzyme found in tears, saliva, sweat, and other body fluids. Other mucosal linings, such as the nasal cavity, also contain lysozyme. It destroys bacteria that attempt to enter our body through these passageways. In the case of tears, they protect our eyes from bacterial invaders.

So, the correct option is 'Option A'.

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

Partially digested semisolid food formed in stomach is ...........

  1. Chyle

  2. Chyme

  3. Bolus

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

Chyme is the name given to the partially digested food, formed in the stomach and enters into the small intestine(duodenum) via the pyloric valve. Chyme, also known as chymus has the consistency of oatmeal(semisolid). Chyme is a thick semisolid mass of partially digested food and digestive secretions during the digestion process. Hence, partially digested semisolid food in the stomach is chyme.

So, the correct answer is 'Chyme'.

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

Pepsin digests .............. .

  1. Proteins in stomach

  2. Carbohydrates in duodenum

  3. Proteins in duodenum

  4. Carbohydrates in stomach
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pepsin is produced in the stomach and is one of the main digestive enzymes in the digestive systems of humans and many other animals, where it helps digest the proteins in food. Zymogenic cell or peptic cell is a cell in the stomach that releases pepsinogen and chymosin.

The proenzyme pepsinogen(inactive), on exposure to hydrochloric acid, gets converted to the active enzyme pepsin. Pepsin hydrolyses proteins to polypeptide chains and initiates protein digestion in the digestion process in humans. Hence, the pepsin digests protein in the stomach.

So, the correct option is 'proteins in the stomach'.

 

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

Match the following nutrition/vitamin deficiences in column I
with causes/deficiencies is column II and choose the correct
option from the answer key

Column I Column II
(a) Kwashiorkor   (p) Iron
(b) General Anaemia  (q) Menadione
(c) Dermatitis  (r) Protein
(d) Marasmus  (s) Pyridoxin
(e) Bleeding  (t) Biotin























  1. (a) -(p) , (b)- (t) , (c) -(q) ,(d)- (r), (e) -(s)

  2. (a) -(t) , (b)- (q) , (c) -(r) ,(d)- (s), (e) -(p)

  3. (a) -(q) , (b)- (r) , (c) -(s) ,(d)- (p), (e) -(t)

  4. (a) -(r) , (b)- (p) , (c) -(t) ,(d)- (s), (e) -(q)

  5. (a) -(r) , (b)- (s) , (c) -(p) ,(d)- (t), (e) -(q)
Reveal answer Fill a bubble to check yourself
E Correct answer
Multiple choice biology digestion and absorption nutrition deficiency diseases parts of the digestive system digestive system of human

Kwashiorkor disease develops due to

  1. Malnutrition.

  2. Over eating.

  3. Catalysis.

  4. Mutation.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Kwashiorkor is malnutrition produced by a severely inadequate amount of protein in the diet. It is also called as protein malnutrition.
  • Symptoms include texture, fatigue, diarrhea, loss of muscle mass, failure to grow or gain weight, edema (swelling) of the ankles, feet, and belly, the damaged immune system, which can lead to more frequent and severe infections, irritability.
  • Hence Kwashiorkor disease develops due to Malnutrition.
  • So, the correct answer is 'Malnutrition'.