Nutrition, feeding, digestion, Biology

Assignment Help:

Nutrition, Feeding, Digestion

All organisms require a fairly steady supply of nutrient materials from the environment to obtain energy in order to stay alive. The animals are heterotrophs because they depend on already synthesised organic compounds from plants and other animals to obtain their food. Unlike autotrophs (plants and chemosynthetic bacteria) animals have only limited synthesising abilities.

The cellular metabolism provides energy for various processes in organisms, like locomotion, excretion, osmoregulation, synthesis of new materials for growth and maintenance and reproduction. To provide energy for these processes raw material or nutrients are required which are supplied by food. In addition animals require amino acids, vitamins and minerals which they cannot synthesise. The study of nutrition involves both the need for food to provide energy and the need for specific food components. The process by which animals acquire and ingest their food is referred to as feeding.

Diverse types of feeding mechanisms have been evolved by different groups of animals. Virtually all food whether of plant or of animal origin has to be broken down to simple compounds by the process of digestion. Digestion and absorption of food constitute the essential link between nutrition and metabolism. In this unit we shall first discuss the nature and components of food and the specialised feeding mechanisms. There exists a relationship between the nature of ingested food and type of feeding mechanism used in acquiring the food. Then we will consider the digestion and absorption of nutrients. Towards the end of the unit we shall be discussing the energy metabolism in animals.


Related Discussions:- Nutrition, feeding, digestion

Why does the ingestion of vegetable fibers improve the bowel, Why does the ...

Why does the ingestion of vegetable fibers improve the bowel habit in people that suffer from hard stools? Some types of plant fibers are not absorbed by the intestine but play

The emergency department due to the babys persistent, A mother has brought ...

A mother has brought her 2-week-old infant to the emergency department due to the baby's persistent and increasing jaundice. Blood testing reveals that the infant's unconjugated bi

Carbohydrate is an organic compound , The Carbohydrate sets are covalently ...

The Carbohydrate sets are covalently attached to various variant proteins to form glycoproteins. Carbohydrates are a shorter percentage of the weight of glycoproteins than of prote

Mutual supplementation of protein with legume and milk, Define Mutual suppl...

Define Mutual supplementation of Protein with legume and milk? Improvement of cereal diets with legume and milk proteins: The proteins of poor diets based on different cereals

Flower - plant growth substances, Flower - Plant Growth Substances Flo...

Flower - Plant Growth Substances Floral initiation is a dramatic event involving a total changeover of the character and developmental pattern of the meristem. The stimulus ca

What does myeloid immunodeficiency cause, Myeloid immunodeficiency causes p...

Myeloid immunodeficiency causes phagocytic function, which is impaired. Those who are affected with this will undergo with enhance in susceptibility to bacterial infection.

Discuss briefly the color reactions of proteins, Question 1 List variou...

Question 1 List various methods used for determination of blood glucose. Explain the principle of each test. Add a note on advantages and disadvantages of each method Qu

Aves, detail information about ave?

detail information about ave?

Determine the self-monitoring of blood glucose, Self-Monitoring of Blood Gl...

Self-Monitoring of Blood Glucose (SMBG) In SMBG, patients measure and monitor their blood sugar level by themselves and assess their condition and know the response to the trea

Define phenolic acids and derivatives, Define Phenolic Acids and Derivative...

Define Phenolic Acids and Derivatives? Two families of phenolic acids are widely distributed in plants: a range of benzoic acid derivatives and those derived from cinnamic acid

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd