Wednesday, October 27, 2010

Types of roots

Lets learn about roots and the types of roots, in this post.

Roots can be considered as the most important part in a plant, roots play a very important role since it takes the very important role in the overall nourishment of the plant.

The different types of roots are as follows.

1) FIBROUS ROOTS

2) STORAGE ROOTS

3) TAPROOTS

4) AERIAL ROOTS

5) PROP ROOTS

6) ROOTS WITH NODULES

In our future posts , we will learn more about each of these roots , with examples of fibrous roots and functions of various roots. I hope this was useful.






Types of pollution

In this post we will learn about the different types of pollution and the ways to prevent them.

We can categorise the different types of solutions as

1) Water pollution: This refers to human activities that transform clean water into water with a potential to cause human health or ecosystem problems.

2) Land pollution : This can be defined as polluting the soil or land, with unnecessary harmful wastes, which would harm plants and trees and also pollute water and sir indirectly.

3) Air Pollution : Air pollution can be defined as a release into the atmosphere of any substances, ex. chemicals or airborne particles, which are harmful both to the human and animal health as well as the health of the wider environment.

4) Noise Pollution : Increased use of vehicles and noise from factories and other sources, noise pollution effects human health and also effects other animals and living beings of earth.

5) Water pollution: This is one of the major pollutions, contaminate water with harmful  chemical wastes, which will lead to serious diseases and cause health hazards in plants and animals.

I hope this was useful, we will learn more in future posts.

Examples of Proteins

We can define Proteins as the structural blocks of the cellular system and are formed by joining of  amino acids by peptide bonds (polymerization) .Proteins mainly consists of  Carbon,Hydrogen,Nitrogen,Oxygen.  Sulphur  and Phosphorous may also be present in certain  proteins.In this post we will learn about proteins, examples of proteins and their properties.

We have three types of proteins:

1) Simple Protein

2) Conjugated Protein

3) Derived Protein

Simple proteins are usually classified according to their solubilities and coagulabilities.Simple Proteins are soluble in polar solvents like water.  

Conjugated proteins, these are complexes of simple proteins (apo proteins ) and a non protein part (prosthetic group) and the entire molecule is called a holoprotein.Conjugated proteins are classified according  to the  prosthetic group. 

The derived proteins are produced due to chemical reactions of native proteins with different substances like water, acids, alkali,heat, radiation etc.

In the future posts, we will learn what is the function of proteins, and the role it plays in day to day life.




Nitrogen Uses

In this post we will learn about nitrogen uses and its properties.  
Some Important use of nitrogen are:
      It is used in the manufacture of nitric acid, ammonia, calcium cyanamide, etc., it acts as an inert diluent inreactive chemicals, it is used in filling electric bulbs to reduce the rate of volatilisation of the tungsten filament, nitrogen gas -filled thermometers are used for measuring high temperatures and liquid nitrogen is used as a refrigerant to preserve biological materials, food items and in cryosurgery
Some properties of nitrogen are: Below are the properties of nitrogen and its features.
It exists in both liquid and gaseous forms, it forms electrovalent as well as covalent compounds with non metals. It is not metallic in nature,It is a poor conductor of heat and electricity, Exceptionally small atomic size , Absence of d-orbitals  in its valence shell
 
 
I hope this was useful, we will  learn more about nitrogen cycle in future posts.

Types of solutions

In this post ,w e will learn about the types of solutions, and good examples to understand the different solutions. Basically there are three types of solutions:


1) Solid solutions:-In solid solutions the solvent is always solid. It is divide into three parts based on the state of solute :

a) Solid in solid

b) Liquid in solid

c) Gas in solid  

2)  Liquid solutions:- In these solutions the  solvent is always liquid. It is divided into three parts based on the state of solute:

a) Solid in liquid

b) Liquid in liquid

c) Gas in liquid  

3) Gaseous solutions:- In these solutions the solvent is in gaseous form. It is divided into three parts based on the state of solute:

a) Solid in gas

b) Liquid in gas

c) Gas in gas   

So, we will learn more about true solutions, with some examples in the future posts. I hope this was useful.

Mixture

We can define a mixture as a combination of two or more substances that are not chemically united and do not exist in fixed proportions to each other. Most natural substances are mixtures. Some examples of mixtures are

There are many types of mixtures , they can be broadly classified as :



1)HOMOGENEOUS MIXTURES

2) HETEROGENEOUS MIXTURES

We can say homogeneous mixture has the same uniform appearance and composition throughout. Many of the homogeneous mixtures are commonly referred to as solutions.

A heterogeneous mixture consists of visibly different substances or phases. The three phases or states of matter are gas, liquid, and solid. 


We will learn more about mixtures, types of colloids and its properties in future posts. I hope this was a good introduction.