Practice questions and explanations covering essential nutrition topics like macronutrients, micronutrients, and dietary requirements. Designed to help students prepare for exams with clear, concise content.
If teeth are not brushed after eating, bacteria and food particles stick to the teeth forming a yellowish layer called dental plaque.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
Bacteria in the mouth act on residual sugars to produce acids, which soften and demineralize the enamel, leading to tooth decay.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
The anal sphincter regulates the egestion (exit) of waste material from the rectum to the outside of the body.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
The primary function of the large intestine in the digestive process is to absorb water from the undigested food material.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
Villi are richly supplied with blood vessels which take the absorbed food to each and every cell of the body.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
Villi are finger-like projections that vastly increase the surface area for the absorption of digested food.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
Pancreatic juice contains trypsin for digesting proteins and lipase for breaking down emulsified fats.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
Bile salts break down large fat globules into smaller ones (emulsification), increasing the efficiency of enzyme action.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
The liver secretes bile juice, which is temporarily stored in the gall bladder before being released into the small intestine.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
Meat is relatively easier to digest than plant matter (cellulose), so carnivores have a comparatively shorter small intestine.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
Cellulose is difficult to digest. Herbivores require a longer small intestine to give the bacteria time to completely break it down.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
The small intestine receives secretions from the liver and pancreas to completely digest carbohydrates, proteins, and fats.
Ref: NCERT Text book class 10 Biology Chapter 5 life process
