What is biochemical composition, Biology

Assignment Help:

What is Biochemical Composition

As life evolved on this planet, nature selected only a few elements, and life eventually came to be based essentially on carbon compounds. Out of the nearly 50 or so elements present in most living organisms; six elements, namely, oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus, constitute nearly 99 per cent by weight of a living organism. One of the reasons for nature's selection of carbon in all life forms, could be that carbon forms a wide range of complex organic compounds. Potassium, sodium, chlorine and magnesium account for nearly 0.8%, and the other elements are present in very small amounts (0.2%), and are called trace elements. The distribution of elements in a living organism is given in Table. There is a remarkable similarity in the nature of the chemical substances that are present in all living organisms. Water constitutes nearly 60% of the weight of the living organisms, and is rightly called the "solvent of life", as it is the principal medium in which all cellular reactions occur. The rest, i.e., the dry weight of the cells, comprises proteins, lipids, nucleic acids and carbohydrates. You will study in other units of this block, more details about these essential biomolecules. Table 1.2 gives you the average chemical composition of a cell.

 

1393_Biochemical Composition.png


Related Discussions:- What is biochemical composition

Define the maxillary tuberosity, Maxillary Tuberosity Incision and refl...

Maxillary Tuberosity Incision and reflection of the mucosa overlying the areas of the maxillary tuberosity and hamular notch when taking impressions for maxillary subperiosteal

Which kind of gamete produced by a heterozygous individual, Which is the ki...

Which is the kind of gamete produced by a heterozygous individual? And what is the genotypical proportion of these gametes? The Heterozygous individuals, for instance, AA, prod

Acid rain, The Phenomenon of acid rain was first introduced by Rober Angus ...

The Phenomenon of acid rain was first introduced by Rober Angus smith in 1852. Is means presence of excessive acids in rain water? Acid rain is a form of precipitation (rain, sn

How did pasteur experiment vary from spallanzani, How did Pasteur's experim...

How did Pasteur's experiment vary from Spallanzani's experiment? Instead of sealing the flask in the experimental group after boiling, Pasteur used a flask with a curved neck,

Why in the f1 generation is one of the colors missing?, Considering the hyb...

Considering the hybridization in a trait like the color of the flowers of a given plant species (red/yellow) conditioned by a pair of different alleles in relation to complete domi

Devonian, Devonian  is the period of geologic time from 410 - 360 million y...

Devonian  is the period of geologic time from 410 - 360 million years before the present. Life on land diversified, with amphibians appearing late in this period of time. Plants we

Functions of plasma proteins, Functions of Plasma Proteins The protein...

Functions of Plasma Proteins The proteins of the plasma serve several important functions. They exert osmotic pressure varying from 25 to 30 mm Hg, which regulate

What are the main functions of the blood, What are the main functions of th...

What are the main functions of the blood? The blood is a means of substance transportation all by the body. The blood distributes nutrients, oxygen, antibodies, hormones, and c

Reproduction, site of fertilistion in human

site of fertilistion in human

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