Students and Teachers Forum

क्लारा जेटकिन भन्ने पाठ जीवनीअन्तर्गत पर्दछ । यसमा जन्म, पारिवारिक अवस्था, बाल्यकाल र .....

Sometimes a human cell consists of extra chromosome, i.e. 47 instead of 46 chromosomes. This causes a disorder or unusual condition in which  child's development is delayed. This condition is called Down's .....

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The anti-Comintern pact was signed to stop the spread of communism in Europe. The main reasons for France and England turning deaf to anti-Comintern pact are: It was signed to stop the spread of communism in Europe to which they were .....

In every country there is a definite department called Defense ministry for peace and security of the country. The reason behind establishing such department is to ensure peace and order throughout the country. When all the countries of the world .....

You may know that there are so many properties having religious, cultural and national importances. These properties are known as national heritages as they make the country known to the rest of the world. These heritages should be conserved and .....

Savanna is the grass-dominated ecosystems. It contains a significant number of widely spaced trees. Trees may make up as little as 5 percent or as much as 30 percent of the cover of all plants in savannas, but grasses and grasslike plants form a .....

Ministry of Labour and Employment - It formulates plans and policies in relation to the employment according to the need   of time and the global labour market. Foreign Employment Department - It provides work permit while going the next .....

The geographical regions of South East Pleatue of Brazil: The Southeast covers only one-tenth of Brazil territory. But it has two-fifths of its population. The Southeast Region of Brazil is composed by the states of Espírito Santo, Minas .....

Internet: Suppose,you have computer or laptop at home. And you want to facebook chat with your friend who is in America. If there is internet connection then you can chat with your friend. If there is no internet then you cannot chat with your .....

Tissue culture is a process that involves exposing plant tissue. Look the diagram, a simple process of tissue culture. to a specific regimen of nutrients, hormones, and light under sterile, in vitro conditions to produce many new plants, each a .....

A nerve that transmits impulses away or outward from a nerve center, such as the brain or spinal cord, usually causing a muscle contraction or release of a glandular .....

Renewable resources include solar energy, wind, geothermal energy, biomass and hydropower. They generate much less pollution, both in gathering and production, than nonrenewable .....

Here we have given, Volume = V = 50cm3 Mass = M = 380 g. We know, Density = M / V                  = 380g /50cm3                       = .....

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Let the present age of father be x and daughter be y. From the 1sta case, x = 3(y - 5).......(i) From the 2nd case, x + 5 = 2(y + 5) or, 3y - 15 + 5 = 2y + 10     [ From(i).] or, y = 20. And, from (i) x = 3(20 - 5) = .....

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If people in a society are united, they can settle any problems they are facing. On the other hand, if they are divided nothing is possible. We can take an example of the Mass Movement II which was successful by the unity of people. Thus, .....

A family is a social unit. It plays a significant role for the progress and prosperity of a society. In the case of social problems, a family can play the following roles: - Each family can unite to fight against the malpractices such as .....

The core is laminated to reduce these to a minimum as they interfere with the efficient transfer of energy from the primary coil to the secondary one. The eddy currents cause energy to be lost from the transformer as they heat up the core - .....

The most important uses and application of Transformer are: 1.It can rise or lower the level of level of Voltage or Current ( when voltage increases, current decreases and            vice virsa because P =V x I, and .....

The table below shows the NGOs working in our communities along with their major functions.

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Lateral surface area in cubiod is same as Total surface area. So, The lateral surface area of Cuboid = 2(lb + bh + .....

Types of chromosomal disorder : Aneuploidy : -This means more or fewer chromosomes than the normal number. Turner syndrome:- One of the two sex chromosomes is not transferred. This leaves a single               .....

1. When N-pole of the magnet is inserted in the coil,     the magnet causes the flow of electric current.     So, the galvanometer shows a .....

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She always washes her clothes herself but I get mine washed at dry cleaning. Rule: Subj+get/have+obj+v3          (But, Sub+get+agent+to+V1+Obj) I get .....

In terms of energy transfer - - Electric motor: Electrical → Mechanical - Electric Generator: Mechanical → Electrical -For a motor the input energy is electrical energy and the useful output energy is mechanical energy. - For a .....

In a generator the input energy is mechanical energy and the useful output energy is electrical .....

In some cases there is a missing chromosome, while in others an extra. The presence of this abnormal number of chromosome in a cell is called aneuploidy. So, aneuploidy and chromosomal disorder give similar .....

The angle between them is 90o Those lines/ vectors / planes with angle 90o between them are called orthognal  lines/ vectors / .....

Difference between Somatic and Sex Chromosomes • Somatic  are homologous chromosomal pairs and sex chromosomes are partially homologous   chromosomal pairs. • Sex chromosomes involve in sex determination and somatic do not .....

A large genus of evergreen coniferous trees, mostly found in the northern hemisphere. The genus formerly included the firs, spruces, larches, and hemlocks, but is now limited to those trees which have the primary leaves of the branchlets reduced .....

The sex chromosomes can most clearly be assigned a function. Chromosomes 1-22 are known as the autosomes, while the 23rd pair, the sex chromosomes, determine whether you are male or female. In fact, the sex chromosomes, XX for female and XY for .....

A chromatid is one copy of a newly copied chromosome which is still joined to the original chromosome by a single centromere. Before replication, one chromosome is composed of one DNA molecule. Following replication, each chromosome is composed of .....

आङ सान सुकीको ठाउँमा म भइदिएको भए देशविकासका लागि निकै राम्रा योजना बनाउने थिएँ .....

3. Acrocentric chromosomes: Acrocentric chromosomes are the chromosomes which have a centromere at one end of the chromosome.  Here, one chromosome arm is very long and the other is very short. This type of chromosome appears as .....

If we are able to settle the problems related to trade and commerce, trade and commerce will no doubt contribute a lot in Gross Domestic Product. It is the fact that we are between two big countries which have large trade and commerce. Nepal will .....

More complex organisms gain new cells by either mitosis or .....

Here, kinetochore complex is the place on either side of the centromere to which the spindle fibers are attached during cell division. This type of chromosome is called as holocentric chromosome. Holocentric chromosomes have the unusual property .....

The region of the chromosome to which the spindle fiber is attached  during  cell division (both mitosis and meiosis). It is the .....

The identical components are called as chromatids and the narrower region where chromatids meet are called as primary consriction. It is usually found in the centre and hence it is commonly called as a .....

Here, a = 10, b  = 12  and angle between them is Θ = 600. We know,  a ⃗  .  b ⃗ = ab cosΘ                 = 10 x 12 x cos60o           .....