CBSE > Class 09 > Science | CBSE Board | Homework Help

The Nucleus,in case of eukaryotes is considered to be the 'brain of the cell'. So, if the nucleus is removed the cell will die. ... So, if the nucleus(assuming genetic material is removed along) is removed, there is no way the replication can occur. Eventually, the cell will undergo no division and will die finally.

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Resh Khan 53 minutes ago

The nucleus , in case of eukaryotes is considered to be the brain of the cell So , if the nucleus is removed from the cell then the cell will die . Not immediately , but after some time . Because, the proteins and the mRNAs present in the cytoplasm will be enough to keep the cell alive for a quite a time.

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Diffrence between ligament and tenden

Posted by Dhruv Mangal 2 hours ago

CBSE > Class 09 > Science

2 answers

Harkirpal Khangura 3 minutes ago

Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure. A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.

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Akshita Pandey 2 hours ago

That join bone to muscle is called tendon & That join one bone to another is called ligament

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Hell

Posted by Harsh Sagar 3 hours ago

CBSE > Class 09 > Science

0 answers

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Nucleus

Posted by Vikash Singh 5 hours ago

CBSE > Class 09 > Science

1 answers

Akshita Pandey 5 hours ago

Brain of the cell and it control all the activities of the cell .It is oval or spherical in shape

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What is syllabus of the dav centerary public school in jind for science half yearly paper

Posted by Anil Singroha 7 hours ago

CBSE > Class 09 > Science

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During the changes of the physcal state state of a substance, the temperatures remain. Why?

Posted by Akshay Munimanda 7 hours ago

CBSE > Class 09 > Science

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What are the equation of motion ?how to derive them.

Posted by Shreedhar Sharma 9 hours ago

CBSE > Class 09 > Science

0 answers

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What is accalaration

Posted by Shreedhar Sharma 9 hours ago

CBSE > Class 09 > Science

1 answers

Shreedhar Sharma 9 hours ago

Rate of change of velocity with respect to the time

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A body Starts from rest and gains a velocity of 108 km/ hr. In 20 sec. Find the distance travelled by body in 20 seconds

Posted by Nutan Jha 10 hours ago

CBSE > Class 09 > Science

3 answers

Akshita Pandey 4 hours ago

Acceleration is 1.5m/s square

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Akshita Pandey 5 hours ago

Answer is 300m.

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Shreedhar Sharma 9 hours ago

What is acceleration

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Full notes of gravitation

Posted by Rohit Sharma 10 hours ago

CBSE > Class 09 > Science

1 answers

Anil Singroha 7 hours ago

Ch 10🐣

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How can feel cool when perfum and petrol straights our hands

Posted by Dhruvi Verma 15 hours ago

CBSE > Class 09 > Science

2 answers

Alka Jindal 14 hours ago

Due to evaporation

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Mridul Verma 15 hours ago

Due to diffusion

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Proof f=ma

Posted by Vishesh Patil 17 hours ago

CBSE > Class 09 > Science

1 answers

Shreedhar Sharma 9 hours ago

Force=mass×velocity

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How willthe weight if a body of mass 100g change if it is taken from equator to the poles ? give reason

Posted by Anjali Sharma 17 hours ago

CBSE > Class 09 > Science

1 answers

Kavita Sharma 17 hours ago

It will change because the gravitational force is maximum at the poles and minimum at the equator 🤗🤗🤗

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What is the name of outer cover of cardiac muscles

Posted by Anand Kumar 17 hours ago

CBSE > Class 09 > Science

1 answers

Shreedhar Sharma 9 hours ago

Musceles tissues

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A constant force of 15n acts on a body of mass 5kg find the acceleration

Posted by Aryan Navale 17 hours ago

CBSE > Class 09 > Science

1 answers

Anand Kumar 17 hours ago

F=ma 15= 5×a A=15÷5 A=3

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What is the relationship between force applied on a body and the resulting acceleration caused in it

Posted by Anuj Kumar 19 hours ago

CBSE > Class 09 > Science

2 answers

Salesh Salu 7 hours ago

Force =mass×acceleration F=m×a

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Yogita Ingle 17 hours ago

Force = acceleration × mass
f = m a

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Proof v=u+at

Posted by Rahul Raj 19 hours ago

CBSE > Class 09 > Science

2 answers

Shreedhar Sharma 9 hours ago

A=v-u\t At=v-u V=u+at

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Vishesh Patil 17 hours ago

First take A graph then acceleration a=v_u by t v will interchange

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Difference between solute solution suspension

Posted by Aryan Lokanda 20 hours ago

CBSE > Class 09 > Science

1 answers

Kavita Sharma 17 hours ago

Look inthis app chemistry section

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What is impure substance. What is colloid. What is unsaturated solution. What is suspension.

Posted by Ajay Tiwari 22 hours ago

CBSE > Class 09 > Science

1 answers

Aditya Giri 20 hours ago

The substance which is not made up a particular type of atoms or mixed in indefinite proportion is called impure substance.a type of solution in which the size of disperse phase is more than 1 nanometer and less than 100 nanometer and shows tondle effect is known as colloid.the solution in which the level of solubility of the solvent is not reached compeletely is known as unsaturated solution.the solution in which the size of solute is more than 100 nanometer and shows tindle effect is known as suspension.

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What are saturated solution

Posted by Ajay Tiwari 22 hours ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 22 hours ago

A saturated solution is a solution in which no more solute can be dissolved at a given temparature.

E.G. If we add sugar continuosly and stirr it it dissolves but one stage will come where no more sugar can be dissolved this is known as saturated solution.

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give reason why cricket player lower his hand while catching the ball ?

Posted by Rishu Raj Singh 22 hours ago

CBSE > Class 09 > Science

2 answers

Prem Chand 21 hours ago

Because it increases the time and decreases the chances of injuries by lowering the force of the ball.

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Gaurav Seth 22 hours ago

While catching a ball, a cricket player lowers his hands, because by doing so, he increases the time of catch. That is, the person increases the time to bring about a given change in momentum, and hence rate of change of momentum decreases.
Thus, a small force is exerted by ball on the hands.

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Aaryant set class9

Posted by Kajal Yadav 23 hours ago

CBSE > Class 09 > Science

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A particle is moving in a straight line with initial velocity u and uniform acceleration a if the sum of the distance travelled in t second and T +1 sec is 100 cm then its velocity after t second in c/sec _

Posted by Neeraj Dhyani 23 hours ago

CBSE > Class 09 > Science

0 answers

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Whay are the functions of golgi apparatus

Posted by Muskan 😉 1 day, 1 hour ago

CBSE > Class 09 > Science

2 answers

Striker Ajhar 23 hours ago

Golgi apparatus is also called golgi complex its main function is to store and pack the product.

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Vishnu Kumar 1 day ago

1.Golgi apparatus store, modifies and pack product into the vesicles. 2.it is involved in the formation of lysosomes. 3.it is involved in the synthesis of cell wall and plasma membrane

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What is crystallisation

Posted by Arun Singhal 1 day, 2 hours ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 22 hours ago

Crystallisation is a process that separates a pure solid in the form of its crystals from a solution. The crystallisation method is used to purify solids.

For example, the salt we get from sea water can have many impurities in it. To remove these impurities, the process of crystallisation is used.

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Pari Bathla 1 day, 2 hours ago

It is the process in which pure solid can be seperated into solution from its crystals.

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Sound is a matter

Posted by Mayank Singh 1 day, 3 hours ago

CBSE > Class 09 > Science

5 answers

Vedang Kulkarni 22 hours ago

No it is an energy and waves

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Striker Ajhar 23 hours ago

Sound is not a matter because we can feel it,it is not occupy space and having no mass

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Mehakpreet Kaur 1 day, 1 hour ago

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Rishav Jha 1 day, 2 hours ago

Its a wave

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Rishav Jha 1 day, 2 hours ago

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What is sol?

Posted by Lalitesh Sharma 1 day, 4 hours ago

CBSE > Class 09 > Science

1 answers

Super Khiladi 1 day, 3 hours ago

Colloidal solution is known as sol

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Marks distribution of Half yearly examination for class 9 CBSE

Posted by Prerna Sinha 1 day, 4 hours ago

CBSE > Class 09 > Science

1 answers

Super Khiladi 1 day, 3 hours ago

Marks. No. of questions. Total marks 1marks. 20questions. 20marks 2marks. 10questions. 20marks 5marks. 06questions. 30marks Total- 36questions. 80marks

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types of matter?

Posted by Anita Negi Anita Negi 1 day, 4 hours ago

CBSE > Class 09 > Science

6 answers

Anita Negi Anita Negi 1 day ago

This is matter state not types

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Mohak Shah 1 day, 1 hour ago

There are 6 types of matter which I know are: •Solid •liquid •Gas •Plasma •BEC:Bose-Einstein Condensates •Fermionic Condensates

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Super Khiladi 1 day, 3 hours ago

There are five types of matter- solid, liquid, gas, plasma, bose einstien condensate(bec).

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Dhruv Singh 1 day, 4 hours ago

Matter is of three types. Solid contain brick. Liquid contain petrol. Gas contain air, CO2.

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Gayatri Singla 1 day, 4 hours ago

1. Solid 2. Liquid 3.Gas

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Gaurav Seth 1 day, 4 hours ago

Solids

Matters which have fixed volume and shape are called solids. For example - stone, wood, brick, ice, sugar, salt, coal, etc.

All metals are solid except mercury and gallium.

Liquid

Matters which have fixed volume but indefinite shape are called liquids. For example - milk, water, petrol, kerosene, alcohol, oil, etc. Since liquid can flow, it is also called fluid.