Lipids, Biology

Assignment Help:

Lipids

All animal tissues contain lipids or fats as essential components of cell membrane. It is also stored in certain tissues. Lipids are body's chief source of energy and are essential for diverse functions such as insulation, padding synthesis of steroid hormones and carriers of fat soluble vitamins. Many animals can live on little or no dietary fat because it can be formed from proteins as well as carbohydrates. But the synthetic ability of many animals is limited in respect to certain unsaturated fatty acids and cholesterol.

For instance, vertebrates can synthesise cholesterol readily: In humans cholesterol is considered harmful in diet because it is a major factor in the development of atherosclerosis or hardening of arteries. On the other hand, insects cannot synthesise cholesterol from their precursors. Therefore, it must be supplied in their diet. Studies on rats show that three fatty acids - linoleic, Linolenic and archidonic acids are not synthesised. Therefore, they are considered essential fatty acids. Many insects, birds and some mammals also reveal such a dietary requirement of fatty acids. It seems that animals in general have a better synthetic ability for lipids than for amino acids.


Related Discussions:- Lipids

Functions of iron in the body, functions of iron in the body: Iron i...

functions of iron in the body: Iron is the major component in haemoglobin. It helps to carryout oxygen from lungs to the tissues. About 60 to 70% of Iron in the body i

What are the ploidies of the generated cells, In which meiotic division doe...

In which meiotic division does the separation of the homologous occur? What are the ploidies of the generated cells after the end of that process? The separation of the homolog

Cardiac transplantation, For patients with end-stage heart failure, cardiac...

For patients with end-stage heart failure, cardiac transplantation has become a promising therapy especially with the advent of  immunosuppressive therapy and more careful screenin

Explain in brief about the diseases sleep paralysis, Explain in brief about...

Explain in brief about the diseases Sleep paralysis This is an episode of paralysis in the transition between wakefulness and sleep. The period of paralysis is usually brief bu

Explain vitamin a deficiency - micronutrient deficiencies, Explain Vitamin ...

Explain Vitamin A Deficiency - Micronutrient Deficiencies? Vitamin A deficiency (VAD) is a major public health problem, and the most vulnerable are preschool children and pregn

Explain the peptones - complex media, Explain the Peptones - Complex Media?...

Explain the Peptones - Complex Media? Peptones are protein hydrolysates obtained by partial digestion of meat, casein, soya meal, gelatin or other protein source. These provide

Molecule that transports oxygen in red blood cells, Q. What is the name of ...

Q. What is the name of the molecule that transports oxygen in red blood cells? The respiratory pigment of the red blood cells is hemoglobin.

Of which type of defense cell do worm infections, Of which type of defense ...

Of which type of defense cell do worm infections stimulate the multiplication? The major leukocytes that generally multiply and participate in the defense against worm infectio

State problem of hypoglycaemia when driving, Hypoglycaemia When Driving ...

Hypoglycaemia When Driving Hypoglycemia is particularly dangerous if it happens to someone who is driving. People with hypoglycemia may have trouble concentrating or se

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