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1) Each kidney is made up of more than one million microscopic and thin tubular units called nephrons or uriniferous tubules. Hence nephron is known as structural unit of kidney.
2) Nephron’s chief function is to regulate the concentration of water and soluble sub-stances, reabsorbing what is needed and excreting the rest as urine. Hence it is known as functional unit of kidney.

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Ajin Ajin 5 years, 3 months ago

Nephron

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Rounak Anand 5 years, 3 months ago

Nephron

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pH value of human beings

Posted by Mac Twins 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Lomror ? 5 years, 3 months ago

7.3 --7.4 slightly alkaline.

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Sanika Walimbe 5 years, 3 months ago

7 - 7.6

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Aditya Aswal 5 years, 3 months ago

7.5 approximately

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Mayank Yadav 5 years, 3 months ago

7.35 to 7.45

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Bind Singh 5 years, 3 months ago

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Why do we need lungs??

Posted by Maahi ......♾ 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Akshita Akshita 5 years, 3 months ago

Lungs help in respiration remove the wastes from the body

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Yogita Ingle 5 years, 3 months ago

The main function of lungs is respiration. Their principal function is to transport oxygen from the atmosphere into the bloodstream, and to release carbon dioxide from the bloodstream into the atmosphere. This exchange of gases is accomplished in the thin-walled air sacs called alveoli.

The lungs are also important in the body's defense against infection and other harmful environmental factors. The lungs provide the second line of defense. Inhaled particles or infectious agents like bacteria and viruses pass through the mouth or nose and lodge in the lungs. Mucus, a sticky fluid produced in the lungs, can trap these inhaled agents and aid the lungs' protective white blood cells (macrophages, neutrophils) in the engulfment and destruction of bacteria and other harmful materials.

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Rounak Anand 5 years, 3 months ago

For respiration

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What is the nature of cinnabar...metal, non metal, metalloid, alloy or anything else?

Posted by A . 5 years, 3 months ago

CBSE > Class 10 > Science

2 answers

A . 5 years, 3 months ago

Can I have answer?

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Riya Philip 5 years, 3 months ago

Join Betternation.xyz This is a site where u can have a lot of friends and fun ? ?

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Can anyone tell me the app to make made in india logo for competition??

Posted by Disha Agarwal 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Ajin Ajin 5 years, 3 months ago

You are a participant of my gov

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What is protogynous condition

Posted by Priyanshu ?✌??? 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Samraat Sahil Verma 5 years, 3 months ago

In the protogynous condition the ovaries mature earlier than the testes

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ANSWER

What is sexual reproduction......

Posted by Aaditya Bansal 5 years, 3 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is chemical reaction and equation? (3)

Posted by Anshuman Omm 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Priyanshu ?✌??? 5 years, 3 months ago

Chemical reaction is the process in which new substances are formed with new properties and chemical equation is a simplest way to write a chemical reaction

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Anshuman Omm 5 years, 3 months ago

When a new substance is formed,we call it a chemical reaction. There is a change in temperature,state, colour and evolution of gas occurs. When a chemical reaction takes place a equation also forms. Chemical equation is a simplest way to write chemical reaction.

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Anshuman Omm 5 years, 3 months ago

This question contain 3 marks

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Narayan Yadav 5 years, 3 months ago

Chemical equations is a process in which chemical reaction are representing with the help of symbols and formulae

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Narayan Yadav 5 years, 3 months ago

Chemical reaction is the process in which new substance with new property are formed

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ANSWER

Plzz koi bta do is question k,a answer ye QUESTION BOARD KE EXAM MEI BHI PUCHA JA SAKTA HAI as a extra question science ke plzzz bta

Posted by Itachi Uchiha ? 5 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Malaika Sharma 5 years, 3 months ago

What is your que??

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Riya Philip 5 years, 3 months ago

Join Betternation.xyz This is a site where u can have a lot of friends and fun ? ?

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Transportation in human beings.

Posted by Anoop Kaul 5 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Yogita Ingle 5 years, 3 months ago

Transportation can be defined as the movement of any substance from one place to another.
Water and nutrients required for all metabolic activities should be transported in the body of plants and animals.
The waste material or excretory products should also move to the region of excretion.
Transportation in animal takes place through circulatory system which includes blood, blood vessels and heart.
Blood is a fluid connective tissue consists of fluid medium called plasma.
Functions of blood are to transport food, oxygen, carbon dioxide, nitrogenous wastes, salts.
A pumping organ is necessary to push the blood around the body.
Heart is the muscular pumping organ which pushes the blood around the body.
Tube like structure through which carry blood to cells, tissues and organs are called as blood vessels.
Two special blood vessels are arteries and veins.
After reaching the organs, the arteries divide in to small branches called as capillaries.
Heart in another component of circulatory system which is also known as pumping organ.
Heart consists of four chambers separated by a partition to avoid mixing of oxygenated and deoxygenated blood.

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Itachi Uchiha ? 5 years, 3 months ago

Breathing

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Chandan Kumar 5 years, 3 months ago

breatheing

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Ayush Singh Rajput 5 years, 3 months ago

Brithing

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ANSWER

Why small intestine is hollow??

Posted by Sandhya Patil 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 5 years, 3 months ago

The small intestine is made up of 3 layers, the duodenum, jejunum, and ileum. It contains enzymes like trypsin and chymotrypsin which breaks down food to the maximum possible with the help of bile from the liver. Peristalsis also takes place in this organ. The duodenum is largely responsible for the continuous breaking-down process, with the jejunum and ileum mainly responsible for absorption of nutrients into the bloodstream.

Contents of the small intestine starts from a semi-solid form till the end in a liquid form after passing through the organ. Once the nutrients have been absorbed and the leftover-food residue liquid has passed through the small intestine, it then moves on to the large intestine, or colon.

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Ayush Singh Rajput 5 years, 3 months ago

Stomach

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Ayush Singh Rajput 5 years, 3 months ago

Large intestine

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And also if we try breathe outside then our mouth burns more than before.... Why this happen?... I WANT A PROPER ANSWER PLZ

Posted by Itachi Uchiha ? 5 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Adarsh Awasthi 5 years, 3 months ago

When we inhale air . our body use oxigen present in air for reaction with glucose and in this reaction "co² + H²o + energy + heat" is relished.. So, the heat formed during this reaction is exhaled out with air when we exhale .. So, due to this heat our mouth burns during exhalation

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Rebekah Augustine 5 years, 3 months ago

I can't give you the proper answer Only you have to understand

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ANSWER

When we eat some spicy food, then our mouth burns then... Why do we breathe inside or why don't we breathe outside(????) ?

Posted by Itachi Uchiha ? 5 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Anshuman Omm 5 years, 3 months ago

Because our body has a constant temperature. The air that come from inside our body has more temperature. The air in the atmosphere is cool. We need some cool things to control the burning.so we take cool air, eat ice cream,or drink water.

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Rebekah Augustine 5 years, 3 months ago

Our mouth get coling down that's why ?

2Thank You

ANSWER

me two indicators that are usually used in chemical laboratories to indicate acidic/basic nature of a solution.

Posted by Vasani Naman 5 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Sanika Walimbe 5 years, 3 months ago

Universal indicators and pH scale

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Ajin Ajin 5 years, 3 months ago

Litmus paper , methyll orange , litmus liquid ,phenophthalin etc..

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Himani . 5 years, 3 months ago

The two indicators are litmus paper and methyl orange

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Narayan Yadav 5 years, 3 months ago

Litmus paper and phenophthalin

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A object 5cm high placed at a distance of 20cm in front of a convex lens of focal length 15cm.find position,size and nature of image

Posted by Raju Singh 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Riya Philip 5 years, 3 months ago

Join Betternation.xyz This is a site where u can have a lot of friends and fun ? ?

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The sky appears dark to passengers flying at very high altitudes mainly because :

Posted by Harsh Malik 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Malaika Sharma 5 years, 3 months ago

Because scattering of light is not prominent at such heights.

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Bind Singh 5 years, 3 months ago

Myopia

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Tech Galaxy 5 years, 3 months ago

Because the phenomenon of scattering of light is not visible to them.

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Define electric potential and electric field

Posted by Akshita Akshita 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Paurvi Soni 5 years, 3 months ago

The direction of the field is taken to be the direction of the force it would exert on a positive test charge. The electric field is radially outward from a positive charge and radially in toward a negative point charge. It is created by electric charge...

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Saurabh ???? 5 years, 3 months ago

Electric potential at a point in an electric field is defined as the work done in moving a unit positive charge from infinity to that point.

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Muskan Kumari 5 years, 3 months ago

An electric potential is amount of work needed to move a unit charge from a reference point to a specific point inside the field without producing an acceleration.

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What is direction of Earth magnetic pole if compass point towards north...

Posted by Disha Agarwal 5 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Ajin Ajin 5 years, 3 months ago

The direction of Earth,s magnetic pole is SOUTH

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Accidental Genius 5 years, 3 months ago

If the compass point towards north, then the direction of earth's magnetic pole is *south* as opposite poles attract each other.

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ANSWER

What is phenotype

Posted by Rishika Sharma 5 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Paurvi Soni 5 years, 3 months ago

phenotype is the physical appearance due to the presence of a trait. Tallness and the shortness of the plant is the physical feature of that plant . 3:1 Genotype - It is the genes based feature . 1:2:1

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Yogita Ingle 5 years, 3 months ago

The phenotype is the physical appearance due to the presence of a trait. For example, tall and dwarf are the phenotypes for the trait height.

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Rishika Sharma 5 years, 3 months ago

Means

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Asharani Nikkam 5 years, 3 months ago

It will came in F2 generation of ratio 9:3:3:1 friend

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What is a mild base and a mild acid ?

Posted by Abhishek Kumar 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Sakshi Kori 5 years, 3 months ago

Dilute acid or base

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Anshul Singla 5 years, 3 months ago

Those acids which gives less amount of H+ions are called mild or weak acids. For example, acetic acid. Those bases which gives less amount of OH- ions are called mild or weak bases. For ex, ammonia.

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Khush Kaur 5 years, 3 months ago

Those acids which release less H+ ions in their aqueous solution are called mild acid Those bases which release less OH‐ ions in their aqueous solution are called mild bases

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What are contributions of Mendel for inheritance of traits?

Posted by Gm Ahmed 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 3 months ago

Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits. Mendel carried out his key experiments using the garden pea, Pisum sativum, as a model system. Pea plants make a convenient system for studies of inheritance, and they are still studied by some geneticists today.

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All formulaes of science chapter 1 s Chand

Posted by Gopal Chaudhary 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Riya Philip 5 years, 3 months ago

Join Betternation.xyz This is a site where u can have a lot of friends and fun ? ?

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A wire of resistivity P is stretched to double of its length. Find its new resistance and resistivity

Posted by Manju Singh 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Samraat Sahil Verma 5 years, 3 months ago

Say initial Resistance is R Length of wire is doubled by stretching so, New Resistance,R'=n^2×R, Where n=2(doubled) So R'=2^2×R=4R Resistivity will remain same because material is same

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ANSWER

What is allele

Posted by Rishika Sharma 5 years, 3 months ago

CBSE > Class 10 > Science