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Why is DNA copying an essential part of the process of reproduction.

Posted by Anshu Tb 5 years, 2 months ago

1 answers

A S 5 years, 2 months ago

DNA ? copying is an issential part of reproduction because it leads to the transmission of characters from parents to the offsprings and bring about variations. Hope it helped you..... Thanks, Regards

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Differentiate between concave and convex lens

Posted by Ashupal Singh 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

A S 5 years, 2 months ago

DIFFERENCE B/W CONCAVE AND CONVEX LENS:- 1)Concave lens are thinner at middle and thicker at edges, while Convex lens are thicker at middle and thinner at edges. 2)Concave lenses are used in telescopes, photography and to cure myopiaetc., while Convex lenses are used in cameras, magnifying glass, microscope and to cure hypermytropia etc. 3)Concave lenses have negative focal length while convex lenses have positive focal length. 4)Concave lens are also known as diverging lens, while convex are also known as converging lens. 4)Concave lenses always form erect and vitual image, while convex lenses form real-inverted as well as erect-virtual. 5)Concave lenses diverges the incident ray coming parallel to principal axis, while convex lenses converges the incident ray coming parallel to principal axis.

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Why right atrium and ventricles had tricuspid wall and left had bicuspid wall??

Posted by Confusion ??? Master ??? 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Neelesh Baghel 5 years, 2 months ago

They have valve in order to prevent the flow of blood back into the right atrium and right ventricle as blood is pressurise in the heart of the human body. Ao in order to maintain the flow of blood undirectional and continuous these valves are required.

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A student found that v and u are the same in concave mirror. What is the possible value of 'f' and 'c'

Posted by Ayush Pimparkar 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Ayush Pimparkar 5 years, 1 month ago

Thanks AS Bhai

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A S 5 years, 2 months ago

As we know by the rules of image formation by concave mirror the 'v' and 'u' will be same only when the object at 'c'. So 'f' and 'c' could take any possible values but the 'c' should be the double of 'f'. Thanks, Regards

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What is the difference between the magnetic field pattern of a solenoid and a bar magnet?

Posted by Bobby Dubey 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Sakshi Jagtap 5 years, 2 months ago

The magnetic field lines of a solenoid are same as in a bar magnet but in a solenoid field density can be varied by changing no of turns and current density but it can't be done with a bar magnet. Also swaping of poles can be done on solenoid by changing the direction of current but can't be done via a bar magnet. Thats all I know about it.

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I want 1k subscribers please subscribe my channel And like the video my channel link https://youtube.com/channel/UCBLdTpKTbsHB8OUwZzQuzcA

Posted by Pintu Kumar 5 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Akhya Sahay 5 years, 2 months ago

Same here dude.... I also want 1k subscribers... I have recemtly started my youtube channel. Plzz subscribe... Channel name is (Itzzz Moody)

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Itachi Uchiha ? 5 years, 2 months ago

Also subscribe our channel tycoon army for pubg video ???

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Sakshi Jagtap 5 years, 2 months ago

channel*

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Sakshi Jagtap 5 years, 2 months ago

plzz tell ur Chanel name

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How common salt is obtained sea water

Posted by Sheetal Kumari 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

King Adithya H M... 5 years, 2 months ago

common salt is obtained from sea water by the process of evaporation. sea water is trapped in large,

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Yogita Ingle 5 years, 2 months ago

Common salt is obtained from sea-water by the process of evaporation. Sea water is trapped in large, shallow pools and allowed to stand there. The sun's heat evaporates the water slowly and common salt is left behind. This impure common salt obtained has impurities and is hence purified to obtain pure common salt by recrystallization.

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Pintu Kumar 5 years, 2 months ago

Common salt is obtained after evaporating the sea water.

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How does the creation of variation is species promote survival?

Posted by Bharat Kohli 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Ashupal Singh 5 years, 2 months ago

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Pintu Kumar 5 years, 2 months ago

Different individuals have different chances. Selection of variants by environmental factors forms the basis for evolutionary processes. These variations may lead to increased survival advantages of the individuals due to positive adoption of traits or may merely contribute to the genetic drift. Variants help the species to survive in all the conditions. Environmental conditions such as heat, light, pests, and food availability can change suddenly at only one place. If variants were not there, the entire species would have been destroyed.

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Meghna Thapar 5 years, 2 months ago

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1=10-³mA 100=?

Posted by Avni Arora 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Manish Kumar Ahirwar 5 years, 2 months ago

What is cell

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Aditya Dj 5 years, 2 months ago

I think 10 mA

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How modern periodic table remove or solve the limitations of mendeleev table??

Posted by Sukhjinder Singh 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 2 months ago

In Mendeleev’s periodic table, the noble elements were not included in the table as they were not discovered at that time.

In Modern periodic table, the noble elements were placed in group 18 as a last and separated group.

In Mendeleev’s periodic table, elements with larger atomic weights were placed before elements with smaller atomic weight without any justified reason.

In modern periodic table, all were arranged systematically with increasing atomic number and weight too.

In Mendeleev’s periodic table, some different elements were grouped together while some similar elements were placed in different groups. Ex: alkali metals like Li , Na, K were placed with coinage metals Cu, Ag, Au etc.

In Modern periodic table there was no such confusion, the coinage metals have their own position in d-block and alkali metals are placed in s-block elements.

In Mendeleev’s periodic table, the isotopes were placed in different positions.

In Modern periodic table, the isotopes were assigned same position as they have same atomic number.

In Mendeleev’s periodic table, elements namely Fe, Co, Ni were placed together in Group VIII.

In Modern periodic table, these elements were placed under d-block elements in different groups.

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How is bleaching powder obtained?

Posted by Gunjan Chhajer 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 5 years, 2 months ago

Bleaching powder is synthesized by the action of chlorine gas (produced from the chlor-alkali process) on dry slaked lime (Ca(OH)₂).

Ca(OH)₂ + Cl₂ → CaOCl₂ + H₂O

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Itachi Uchiha ? 5 years, 2 months ago

Plzz thnkx button click kr Dena BSS

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Itachi Uchiha ? 5 years, 2 months ago

Bleaching powder is synthesized by the action of chlorine gas (produced from the chlor-alkali process) on dry slaked lime (Ca (OH)_2).

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Aeyjgd

Posted by Aryan Dabas 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Itachi Uchiha ? 5 years, 2 months ago

Aryan what do you want to say???

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Describe electrolytic refining of copper

Posted by Goplani Aesha 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Itachi Uchiha ? 5 years, 2 months ago

In electrolytic refining of copper, the electrolyte is a solution of acidified copper sulphate. The anode is impure copper, whereas the cathode is a strip of pure copper on passing electric current, pure copper is deposited on the cathode.

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Transfer of egg into the fallopian tube is carried out by

Posted by Karnika Kumari 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Jagrati Sharma?? 5 years, 2 months ago

Fallopian tubes, or oviducts, connect the ovaries and uterus. They are also the place where the egg and sperm meet and fertilization occurs, in addition the tubes have the ability to carry the eggs/embryos to the uterus

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Proof of E=mc2

Posted by Pratham Kumar 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Itachi Uchiha ? 5 years, 2 months ago

Proof of Albert Einstein's special-✔️✨relativity equation ✔️E = mc2. E = mc2, equation in German-born physicist Albert Einstein's theory of special relativity that expresses the fact that mass and energy are the same physical entity and can be changed into each other.....

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derive the equation for resultant resistance of Resistors in series.

Posted by Bobby Dubey 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 2 months ago

Consider 3 resistors R₁,R₂ & R₃ connected in series.
The current flowing through them is same.
We know,
V=iR
So,
iR_s= iR₁+iR₂+iR₃
iR_s= i (R₁+R₂+R₃)
On cancelling i both sides we get,
R_s= R₁+R₂+R₃

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Explain human digestive system in detail in easy way

Posted by Harshali Vilhekar 5 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

https://www.facebook.com/103267231505909/videos/1296473827366040/

Posted by Kushagra Gupta 5 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What happens to the image distance in the eye when we increase the distance of an object from the eye?

Posted by : (ᵔᴥᵔ) ???? (ᵔᴥᵔ) 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 5 years, 2 months ago

The image is formed on the retina even on increasing the distance of an object from the eye. For this eye lens becomes thinner and its focal length increases as the object is moved away from the eye.

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Rajni Kant 5 years, 2 months ago

There is no change in the image distance because our eye increases or decreases the focal length of lens to focus that object and always forms image on retina.

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Can anybody help me in understanding chapter"carbon and its compounds"??...please?? help me

Posted by : (ᵔᴥᵔ) ???? (ᵔᴥᵔ) 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

: (ᵔᴥᵔ) ???? (ᵔᴥᵔ) 5 years, 2 months ago

"G" is word used for showing respect...in punjabi..it is used for respect

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Itachi Uchiha ? 5 years, 2 months ago

What is '?g'

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Itachi Uchiha ? 5 years, 2 months ago

Plzz tell me

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: (ᵔᴥᵔ) ???? (ᵔᴥᵔ) 5 years, 2 months ago

Okk.thanku so much g☺️?

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Itachi Uchiha ? 5 years, 2 months ago

Plzz go to this YouTube channel exam fear or learnohub...u have to all the science chapter understanding videos

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What is the sigh for 'v' in convex lens?

Posted by S K 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Pintu Kumar 5 years, 2 months ago

V is taken (+) positive in convex lens. And (-) negative in concave lens. V = image distance my channel link https://youtube.com/channel/UCBLdTpKTbsHB8OUwZzQuzcA

1Thank You

Jagrati Sharma?? 5 years, 2 months ago

, V in lens it is taken as positive in Convex lens since image is formed on +X side. It is taken as negative in Concave lens since image is formed in -X side of the Cartesian. In Concave mirror V is taken as positive and negative for convex mirror.

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(Sam∆ ?Rock) 5 years, 2 months ago

V= image distance U= object dectance ????????

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Describe different types of a sexual reproduction in plants and animals

Posted by Pradeep Kumar 5 years, 2 months ago

CBSE > Class 10 > Science

0 answers

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That year a topic electric mortor included

Posted by Kartik Kataria 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Chakshu Budhiraja 5 years, 2 months ago

Yes bro

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You are provided with a magnesium ribbon and the sulphur powder. Explain with the help of an activity that metal oxides are basic and non metal oxides are acidic in nature.

Posted by Lopinder Sharma 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Ketan Kumar 5 years, 2 months ago

As we know that magnesium is a metal and metals form basic oxide while sulphur is a non metal and non metal form acidic oxide here we burn magnesium ribbon in air and we get magnesium oxide magnesium oxide turns red litmus blue which tells us that magnesium oxide is basic and in Sulphur we burn sulphur in air it reacts with the oxygen of air to form an acidic oxide cold sulphur dioxide a solution of Sulphur dioxide in water turns blue Litmus to Red this shows that Sulphur dioxide is acidic in nature

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Steps of glycolysis

Posted by Ritika Maddhesiya 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 2 months ago

Stage 1

A phosphate group is added to glucose in the cell cytoplasm, by the action of enzyme hexokinase.
In this, a phosphate group is transferred from ATP to glucose forming glucose,6-phosphate.

Stage 2

Glucose-6-phosphate is isomerized into fructose,6-phosphate by the enzyme phosphoglucomutase.

Stage 3

The other ATP molecule transfers a phosphate group to fructose 6-phosphate and converts it into fructose 1,6-bisphosphate by the action of enzyme phosphofructokinase.

Stage 4

The enzyme aldolase converts fructose 1,6-bisphosphate into glyceraldehyde 3-phosphate and dihydroxyacetone phosphate, which are isomers of each other.

Step 5

Triose-phosphate isomerase converts dihydroxyacetone phosphate into glyceraldehyde 3-phosphate which is the substrate in the successive step of glycolysis.

Step 6

This step undergoes two reactions:

The enzyme glyceraldehyde 3-phosphate dehydrogenase transfers 1 hydrogen molecule from glyceraldehyde phosphate to nicotinamide adenine dinucleotide to form NADH + H⁺.
Glyceraldehyde 3-phosphate dehydrogenase adds a phosphate to the oxidized glyceraldehyde phosphate to form 1,3-bisphosphoglycerate.

Step 7

Phosphate is transferred from 1,3-bisphosphoglycerate to ADP to form ATP with the help of phosphoglycerokinase. Thus two molecules of phosphoglycerate and ATP are obtained at the end of this reaction.

Step 8

The phosphate of both the phosphoglycerate molecules is relocated from the third to the second carbon to yield two molecules of 2-phosphoglycerate by the enzyme phosphoglyceromutase.

Step 9

The enzyme enolase removes a water molecule from 2-phosphoglycerate to form phosphoenolpyruvate.

Step 10

A phosphate from phosphoenolpyruvate is transferred to ADP to form pyruvate and ATP by the action of pyruvate kinase. Two molecules of pyruvate and ATP are obtained as the end products.

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Why should the resistance of an ammeter should be very small

Posted by Anmol Singh Chhabra 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 2 months ago

The resistance of an ammeter should be very small so that it may not change the value of the current flowing in the circuit.

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What is Archmities principal ?

Posted by Ankit Bijlwan 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Sakshi Jagtap 5 years, 2 months ago

Fossils are the remains or impressions of organisms that lived in the remote part. They are helpful in study of evolution as.................. 1. They give us an idea of the time in history when different species were formed or become extinct...... ....... 2. They also help us to trace the evolutionary history of some animals.......... 3. Fossils also indicate connecting link between two groups of organisms, e.g. Archaeopteryx is a connecting link between reptiles and birds.

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Krishan Sagtani 5 years, 2 months ago

Explain the importance of fossils in deciding evolutionary relationship

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Sakshi Jagtap 5 years, 2 months ago

The upward buoyant force that is exerted on a body immersed in a fluid, whether partially or fully submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the center of mass of the displaced fluid....... hope this helps uhh?

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Why is their a ring between wires carrying high voltage and low current

Posted by Angel Joshi 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Chakshu Budhiraja 5 years, 2 months ago

I don't know the answer But I want to know about you ?

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What is parent hydrocarbon??

Posted by Shruti Janghu 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Tejasvini S 5 years, 2 months ago

Parent Hydrocarbon is the main straight chain of Hydrocarbon for which we use the term linke meth, eth, prop depending on the number of carbon atoms in the chain.

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Meghna Thapar 5 years, 2 months ago

Parent Hydrocarbon is the main straight chain of Hydrocarbon for which we use the term linke meth, eth, prop depending on the number of carbon atoms in the chain. A hydrocarbon is an organic chemical compound composed exclusively of hydrogen and carbon atoms. Hydrocarbons are naturally-occurring compounds and form the basis of crude oil, natural gas, coal, and other important energy sources. Petroleum and coal are the major sources of hydrocarbons.

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Give a brief explanation about people who are living in & around the forest. (5 marks) .......................................[you can also write about their role in saving the resources]

Posted by Paru ? 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Paru ? 5 years, 2 months ago

Thank you ?✌?. But can you give some more information (like their role in saving the resources) please

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Itachi Uchiha ? 5 years, 2 months ago

I hope it is helpful to you ☺️?

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Itachi Uchiha ? 5 years, 2 months ago

people living near the forest areas depend mostly on forests for their livelihood. all the basic requirements are available in the forests like fruits, wood,rubber etc. ... it provides them food and money therefore most of the people living in forest areas depend on forests for their livelihood.

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