Carbohydrates, Biology

Assignment Help:

Carbohydrates

Fifty five to seventy per cent of the required energy in animals is derived from carbohydrates. However, fats and proteins can also be broken down and used for supplying energy. In most animals this happens only when the dietary intake of carbohydrates is low. In contrast, Drosophila uses only carbohydrates as a source of energy for its flight muscles and when the supply is exhausted the insect cannot fly even though it uses stored fat for other metabolic processes. Whereas, locusts are known to use only lipids for their long migratory flights. Most animals, however, use a variety of hexose sugars like glucose, fructose, mannose, and galactose as interchangeable sources of energy.

In this way no particular carbohydrate is really considered essential in a way similar to amino acids. But even if no carbohydrate is considered essential, growth of certain animals will be better on one type of sugar than on another. This can be explained better by the results of the following experiment. Young locusts showed that when dietary sugar was maltose growth was maximum or optimum and growth was minimum when no carbohydrate was given. Other sugars supported sub-optimal growth. What could be the reason for this difference? One of the main causes is the difference in the rate of movement of sugars across the gut wall into the blood. From the above experiment we can conclude that certain insects have a preference for a certain carbohydrate which can be called an essential or preferred nutrient. In the above experiment with locusts, maltose was the preferred nutrient.


Related Discussions:- Carbohydrates

Cancer lung, Cancer Lung Incidence of cancer lung is more in persons ...

Cancer Lung Incidence of cancer lung is more in persons who smoke. Environmental and industrial pollution is also a risk factor in the increase in incidence. Clinic

What is hemorrhage, What is Hemorrhage Mild to moderate capillary ooze...

What is Hemorrhage Mild to moderate capillary ooze can readily be controlled by pressure packing. A more severe venous or, in rarer instances, an arterial bleed may require cl

Corpus allatum and juvenile hormone, Corpus Allatum and Juvenile Hormone ...

Corpus Allatum and Juvenile Hormone The corpora allata are rounded glands attached to the posterior side of every corpus cardiacum making a compact body just behind the brain.

What is pus, What is pus Pus is a residual of the inflammatory reaction...

What is pus Pus is a residual of the inflammatory reaction. It is having a mixture of fragments of dead leukocytes, infectious agents (generally bacteria) and tissues.

Pocket psedocyst-endodontics principles and practice, Pocket Psedocyst : le...

Pocket Psedocyst : lesions present as endodontic origins from canals . It makes lumens resemble granuloma . All lesions lined until root canal or apical foramen communicat

Determine the osseus defects around implants, Osseus defects around implant...

Osseus defects around implants. They are classified into four main groups. Group I defects: These demonstrate moderate horizontal bone loss with a minimal intrabony component

What are some diseases caused by abnormal gh secretion, What are some disea...

What are some diseases caused by abnormal GH secretion by the hypophysis? In childhood deficient GH secretion might be lead to delayed growth and in severe cases to nanism (dwa

Curve of variation of the speed of a reaction, Q. Concerning enzymatic reac...

Q. Concerning enzymatic reactions, how dissimilar are the graphic curve of the variation of the speed of a reaction as function of substrate concentration and the curve of variatio

Protoplast, PROTOPLAST Cell without cell membrane (Henstein) It c...

PROTOPLAST Cell without cell membrane (Henstein) It contains 1 or more vacuoles. In mature plant cells protoplast forms a peripheral layer called Primordial utricle.

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