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Who discovered cells and how?

Posted by Prince Suthar 5 years ago

CBSE > Class 09 > Science

5 answers

Devdatt Kumar Ujjwal 5 years ago

In 1665, Robert Hooke discovered cell while examining a thin slice of cork through a self designed microscope.He observed that the cork resembled the structure of the honeycomb consisting numerous tiny compartments.This minuscule boxes were referred to as cells.

Ananya Singh 5 years ago

Robert hooke discovered the cell while seeing in the slice of cork through a self designed microscope

Shreya B 5 years ago

In 1665, Robert Hooke discovered cell while examining a thin slice of cork through a self designed microscope.He observed that the cork resembled the structure of the honeycomb consisting numerous tiny compartments.This minuscule boxes were referred to as cells.

Prabhat Kumar 5 years ago

Robert Hooke discovered dead cells in1665 in the bark of trees. Anton von leeuwenhoek discovered living cells.

Prince Suthar 5 years ago

Yes

ANSWER

which of the following are matter?

Posted by Himanshu Singh 5 years ago

CBSE > Class 09 > Science

5 answers

Krishna Agrawal 5 years ago

Matter are substance made by atom..

Bhumika Sharma ✓ 5 years ago

Himanshu pls provide options so that we could answer u ☺️

Abhishek Singh 5 years ago

Tell options also

Prabhat Kumar 5 years ago

Ya give options.

Naina Gupta 5 years ago

Options to batao

ANSWER

What is SI unit of acceleration

Posted by Tanmay Patil 5 years ago

CBSE > Class 09 > Science

5 answers

Shreya B 5 years ago

m/s^-2(meter per second square)

Prabhat Kumar 5 years ago

M/S-2 Meter per second square.

Raju Gupta Raju Gupta 5 years ago

m/s-2

Shikha Ranjan 5 years ago

v-u/t

Akhand Yadav 5 years ago

m/s^-2

ANSWER

Where is cytoplasm located

Posted by Kartik Chhillar 5 years ago

CBSE > Class 09 > Science

5 answers

Poonam Anand 5 years ago

Cytoplasm is located between cell membrane and nuclear membrane.

Annu Singh 5 years ago

It is located outside the nucleus and inside the plasma membrane. It is a jelly like fluid

Prabhat Kumar 5 years ago

Cytoplasm is a jelly like structure which found in nucleus of the cell .

Shikha Ranjan 5 years ago

Nucleus

Naina Gupta 5 years ago

Cytoplasm located in cell

ANSWER

A bullet of mass 20 g is horizontally fired with a velocity 150 m s-1 from a pistol of mass 2 kg. What is the recoil velocity of the pistol?

Posted by Sashi Kumar 5 years ago

CBSE > Class 09 > Science

2 answers

Devdatt Kumar Ujjwal 5 years ago

In 1665, Robert Hooke discovered cell while examining a thin slice of cork through a self designed microscope.He observed that the cork resembled the structure of the honeycomb consisting numerous tiny compartments.This minuscule boxes were referred to as cells.

Yogita Ingle 5 years ago

Mass of bullet, m1 = 20g (= 0.02 kg)

Mass of pistol, m2 = 2 kg

Initial velocity of the bullet (u1) and pistol (u2) = 0

Final velocity of the bullet, v1 = +150m s-1

Let v be the recoil velocity of the pistol.

The total momentum of the pistol and bullet is zero before the fire. (Since both are at rest)

Total momentum of the pistol and bullet after it is fired is

= (0.02 kg x 150 m s-1) + (2 kg x v m s-1)

= (3 + 2v) kg m s-1

Total momentum after the fire = Total momentum before the fire

3 + 2v = 0

→v = -1.5 m/s

Thus, the recoil velocity of the pistol is 1.5 m/s.

ANSWER

Why is it said that earth is 1.5 inch away from earth.

Posted by Aranav Shukla 5 years ago

CBSE > Class 09 > Science

2 answers

Bhumika Sharma ✓ 5 years ago

Hey......ur question has an error.........(EARTH is 1.5 inch away from EARTH) that sounds awkward. Pls correct the statement......nice to help u ☺️

Naina Gupta 5 years ago

I also don't know

ANSWER

What si unit of time

Posted by Hemadharshini P 5 years ago

CBSE > Class 09 > Science

5 answers

Akhand Yadav 5 years ago

second

Yo ???Yo 5 years ago

Second

Jyotirya Agrawal 5 years ago

Second

Naina Gupta 5 years ago

Second

Aranav Shukla 5 years ago

T

ANSWER

Describe producte of peletalon

Posted by Gautam Yadav 5 years ago

CBSE > Class 09 > Science

1 answers

Bhumika Sharma ✓ 5 years ago

I think there is some error in ur question.......pls check it once again.......nice to help u ☺️

ANSWER

Describe products of peletalon

Posted by Gautam Yadav 5 years ago

CBSE > Class 09 > Science

0 answers

ANSWER

Try this search on Google ?-"do a barrer roll" and see the results ????

Posted by Mukul Kumar 😎 5 years ago

CBSE > Class 09 > Science

3 answers

Mukul Kumar 😎 5 years ago

Also go on the first web site and discover many more interesting things

Bhumika Sharma ✓ 5 years ago

Yaa . The Google screen starts rotating ?

Shikha Ranjan 5 years ago

Okk

ANSWER

How was the institutional design formed for the indian constitution?? Plz give this answer

Posted by Parth Surmare 5 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years ago

(i) A constitution is mainly about embodying the values into institutional arrangements.
(ii) It is a very long and detailed document. Therefore, it needs to be amended quite regularly to keep it updated.
(iii) So the makers of the Indian constitution made provisions to incorporate changes from time to time. These changes are called constitutional amendment.
(iv) The Constitution describes the institutional arrangements in a legal language.
(v) Like any constitution, the Indian Constitution lays down a procedure for choosing persons to govern the country. It defines who will have how much power to take which decisions.
(vi) And it also puts limits to what the government can do by providing some rights to the citizen that cannot be violated.

ANSWER

If a planet x has some radius as that of earth but if its mass is double that of Earth then find the acceleration on the surface of the planet x

Posted by Neha Malhotra 5 years ago

CBSE > Class 09 > Science

1 answers

Parth Surmare 5 years ago

Let the radius of earth be r The radius of planet x=r Let the mass of earth be M The mass of planet x = 2M g of earth =GM/r^2=9.8m/s^2 g of planet x= G2M/r^2 g of x / g of earth = (G2M/r^2)/(GM/r^2) g of x = 2× g of earth g of x= 2×9.8 =19.6 m/s^2 Hope that it will help

ANSWER

Which force is responsible for tides in the ocean at night

Posted by Pratyasha Meher 5 years ago

CBSE > Class 09 > Science

2 answers

Manish Kumar 5 years ago

Gravitational force

Parth Surmare 5 years ago

Gravitational force

ANSWER

Water is pure or impure

Posted by Lakshay Malik 5 years ago

CBSE > Class 09 > Science

4 answers

Poonam Anand 5 years ago

Water is impure, because water is mixture of hydrogen and oxygen

Ananya Singh 5 years ago

Pure

Parth Surmare 5 years ago

Water is Pure because it is a compound and compound is pure

Neha Malhotra 5 years ago

Pure

ANSWER

Cartoon making on motion chapter

Posted by Vishnu Kalvakuntla 5 years ago

CBSE > Class 09 > Science

2 answers

Bhumika Sharma ✓ 5 years ago

This is the link of a youtube video u can visit here and have a good learning......all the bst ☺️

Bhumika Sharma ✓ 5 years ago

https://youtu.be/9sIP0Z-y__c

ANSWER

Differentiate between symptoms and sign

Posted by 05. Devika.S Ix B 5 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years ago

Signs and symptoms are two different things especially used regarding the disease.
Sign are the representation that can be seen by other , they are not usually seen by the person showing it. And it is the things which is visible externally

While the symptoms are the internal feeling of the person. It can only described by the person who is having it. For example of you are having the pain , this pain will only feel by you , not any one else.will know until you tell them.

ANSWER

What is the right definition of force

Posted by Akib Khan 5 years ago

CBSE > Class 09 > Science

2 answers

Vasu Singhal 18 5 years ago

A push or pull of an object is called force SI unit Newtown sing N

Yogita Ingle 5 years ago

Force: It is a push or pull on an object that produces acceleration in the body on which it acts.

S.I. unit of force is Newton.

• A force can do three things on a body.

(a) It can change the speed of a body.

(b) It can change the direction of motion of a body.

(c) It can change the shape of a body.

ANSWER

What happens when a cell is kept in hypertonic solution

Posted by Vineet Poonia 5 years ago

CBSE > Class 09 > Science

2 answers

Poonam Anand 5 years ago

When a cell is kept in hypertonic solution they are swells up

Divya Gupta 5 years ago

Hypertonic solution have less water and more solute (such as salt and sugar) than a cell.If you place an animal cell or plant cell in a hypertonic solution,the cell shrink,because it loses water .Water moves from higher concentration inside the cell to lower concentration outside

ANSWER

Is dettol a true solution

Posted by N K 5 years ago

CBSE > Class 09 > Science

2 answers

Naina Gupta 5 years ago

Yes

Suraj Burnwal 5 years ago

I think no it is a colloidal solution

ANSWER

If one mole of carbon atoms weigh 12 grams, what is the mass (in grams) of 1 atom of carbon?

Posted by Vishnu Priya 5 years ago

CBSE > Class 09 > Science

1 answers

Yerrabolu Chakradhar 5 years ago

12g or 12U

ANSWER

What is an earthquake??

Posted by Naina Gupta 5 years ago

CBSE > Class 09 > Science

4 answers

Naina Gupta 4 years, 10 months ago

Thanks

Yogita Ingle 5 years ago

An earthquake is the shaking of the surface of Earth due to the sudden release of energy in the Earth’s crust, as a result, seismic waves (also known as S waves)are created. The seismic activities in an area determine the type and intensity of the earthquake.

Dolly Singh 5 years ago

Movement of tectonic plates leads to earthquake ..

Kahakasha Ali 5 years ago

Earth sun ka pass ajati hai to earthquake aata hai my answer

ANSWER

can u give me some ideas of working project of science

Posted by Rashi Yadav 5 years ago

CBSE > Class 09 > Science

3 answers

Sandeya Kazal Chettri 5 years ago

What types of project???

Naina Gupta 5 years ago

Which type of your science project ?? Tell me ... and then we give me some ideas.

Rashi Yadav 5 years ago

pllllllzzzzzz

ANSWER

Symptoms and signs in tablet colum

Posted by Dariya Devi G 5 years ago

CBSE > Class 09 > Science

1 answers

Sakshi Sharma 5 years ago

Give me my ans first What is tge difference bw molecules and O2

ANSWER

What is the difference b/w molecules 20 amd O2

Posted by Sakshi Sharma 5 years ago

CBSE > Class 09 > Science

1 answers

Sakshi Sharma 5 years ago

Plllllllllzzzzzzzzzzzzz help

ANSWER

Boiling point of water

Posted by Raunak Yadav 5 years ago

CBSE > Class 09 > Science

5 answers

Neeraj Kumar 5 years ago

100 degree Celsius

Rashi Yadav 5 years ago

100 ° celcius

Lalit Chandra 5 years ago

100 degree Celsius

Pragati Agrawal 5 years ago

100 degree Celsius

Vishal Bansal 5 years ago

100° C or 273 K

ANSWER

This has several layers of irregular cells

Posted by Trijal Pg 5 years ago

CBSE > Class 09 > Science

2 answers

Chhavi Rathi 5 years ago

Epithelial tissues

Trijal Pg 5 years ago

Statified columnar epithelium

ANSWER

What is evaporationb

Posted by Gurpreet Choudhary 5 years ago

CBSE > Class 09 > Science

3 answers

Pragati Agrawal 5 years ago

The process of changing liquid into gaseous state at room temperature.. This process is known as evaporation

Vishesh Thagunna 5 years ago

Evaporation is a process in which water became vapour below its boiling point

Gorika Singhal 5 years ago

Evaporation is the process in which liquid vaporises below its boiling point.

ANSWER

Who is the father of coronavirus

Posted by Brajesh Kumar 5 years ago

CBSE > Class 09 > Science

5 answers

Anamika Kicholiya 5 years ago

China

Nisha Gupta 5 years ago

China is

Tannu Singh 5 years ago

China

Aanchal Jha 5 years ago

China

Brajesh Kumar 5 years ago

China

ANSWER

Is there any similarity in all materials

Posted by Botla Laxman 5 years ago

CBSE > Class 09 > Science

4 answers

Annu Singh 5 years ago

All material is consist of electron, protron and neutron

Yerrabolu Chakradhar 5 years ago

All materials are made of fundamental particle called atoms. All materials are made of fundamental particle called atoms.

Hdm . 5 years ago

All materials have weight, occupy space, etc so all can be considered into one *common group*, _MATTER_

Mukul Kumar 😎 5 years ago

All materials are made of fundamental particle called atoms.

ANSWER

Who discovered corona viruses?

Posted by Badshah Ankit 5 years ago

CBSE > Class 09 > Science

5 answers

Bhumika Sharma ✓ 5 years ago

The mahaan corona virus was discovered by the one and only Vuhan city situated in our most favorite country China ????

Naina Gupta 5 years ago

(Vuhan city) who is situated in China

Brajesh Kumar 5 years ago

Chamgadar chin

Abhishek Singh Singh 5 years ago

China??

Gurleen Kaaur 5 years ago

It's a double meaning question beta

ANSWER

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