Chapter 12 (Nutrition) F.Sc 1st Year Biology Short Questions

What is the function of sodium bicarbonate found in pancreatic juice?

Pancreatic juice also contains sodium bicarbonate which partly neutralizes the chyme coming from the stomach. This is necessary because enzymes of the pancreas do not work well in acidic conditions.

What condition is caused due to accumulation of bile pigments?

If bile pigments are prevented from leaving digestive tract, they may accumulate in blood, causing a condition known as jaundice.

What is rectum?

Rectum is the last part of large intestine, where faeces are temporarily stored and rejected through anus, at intervals.

What is dyspepsia? Give its two symptoms.

Incomplete or imperfect digestion is called dyspepsia. This is characterized by abdominal discomfort, flatulence (formation of gas), heartburn, nausea (sickness or unsettled stomach) and vomiting.

What is the cause of dyspepsia?

Dyspepsia may occur due to excessive acidity in stomach or faulty function of stomach and intestine or insufficient quality or quantity of bile secretions.

What is the commonest cause of food poisoning?

One of the commonest causes of food poisoning is the toxins produced by bacteria, Salmonella and Campylobacter.

What is botulism? How is it caused?

A severe form of food poisoning is botulism. This is caused by toxins produced by bacteria known as Clostridium botulinum. Botulism develops by the use of improperly canned or otherwise preserved foods, especially meat.

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