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

If ER is removed then the following will happen - 1. Detoxification will not take place in the cells 2. Biosynthesis of glycolipids, phospholipids and cholesterol will not take place which will affect the formation of plasma membrane and various steriod hormones. 3. Digestive enzymes of lysosomes will not be produced. 4. The cell will be deficient of a skeletal framework.

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ANSWER

Where is protein synthesis

Posted by Yadav Dinesh 6 years, 5 months ago

CBSE > Class 09 > Science

3 answers

45516111? 46 6 years, 5 months ago

Right kriti

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Kritika Singh 6 years, 5 months ago

Protein are synthesised in the endoplasmic recticulum .RER ( smooth endoplasmic recticulum ).helps in the particle to the smooth surface called ribosomes . These ribosomes are sites of the cell .

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Hariom Dalal 6 years, 5 months ago

Mitochondria is the protein factory of cell,it synthesis protein

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ANSWER

Explain the intercomession of the three states of matter

Posted by Chhotu Sahu Sahu 6 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 6 years, 5 months ago

Three states of matter are inter-convertible.

Solid can be changed into liquid by boiling and liquid can be changed to solid by cooling it i.e. by solidification.
Liquid can be changed to gas by vaporization by heating it and gas can be changed to liquid by condensation i.e. subjecting it to low temperature.
Solid can be changed to gaseous form/state by sublimation and gas can be changed to solid by condensation.

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ANSWER

Explain the composition function of plasma membrane

Posted by Chhotu Sahu Sahu 6 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 6 years, 5 months ago

The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.

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ANSWER

explain how a horse can pull a cart

Posted by Varsha Raj 6 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Power P 6 years, 5 months ago

Yes hourse pushes the ground backwards according to Newton's third law of motion every action has a equal and opposite reaction

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Sia ? 6 years, 5 months ago

A horse pushes the ground in the backward direction. According to Newton's third law of motion, a reaction force is exerted by the Earth on the horse in the forward direction. As a result, the cart moves forward.

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ANSWER

What is O2 know as?

Posted by Geeta Gill 6 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Kritika Singh 6 years, 5 months ago

Oxygen

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Tanishka Swamy 6 years, 5 months ago

Oxygen

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Vinita Sahu 6 years, 5 months ago

Oxygen

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ANSWER

Why does a gas exert pressure?

Posted by Tanya Thakur 6 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Anish Singh 6 years, 5 months ago

Because it is compressible

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Yogita Ingle 6 years, 5 months ago

The pressure exerted by a gas uniformly across the surface of a container can be described by simple kinetic theory. The particles of a gas are constantly moving in random directions and frequently collide with the walls of the container and/or each other. The sum of all the normal components of force exerted by the particles impacting the walls of the container divided by the area of the wall is defined to be the pressure.

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ANSWER

WHAT IS cell and function

Posted by Aniket Soni 6 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Aniket Soni 6 years, 5 months ago

Cell is a structure and functional unit of life

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Yogita Ingle 6 years, 5 months ago

All living organisms - plants, animals and human beings are made of small structures called cells.

Structure and Support:You know a house is made of bricks. Similarly, an organism is made up of cells. Though there are certain cells such as collenchyma and sclerenchyma are present for offering structural support however in general too, all cells generally provide the structural basis of all organisms.

<p3>Growth: In complex organisms such as humans, the tissues grow by simple multiplication of cells. Hence, cells are responsible for the growth of the organism. The entire thing takes place via a process of mitosis.

Transport: Cells import the nutrients that are used in the different chemical process which take place inside them. As a result of these processes, a waste product is produced. Cells then work to get rid of this waste. In this manner, the small molecules like the such as oxygen, carbon dioxide, and ethanol pass through the cell membrane by diffusion. This method is known as passive transport. On the other hand, the larger molecules like the proteins and polysaccharides, go in and out of the cell via active transport.

Energy Production:Organisms need energy to perform different chemical reactions. In plants, the energy comes from the process of photosynthesis while in the animals the energy comes via respiration.

Metabolism: Cell is responsible for metabolism that includes all the chemical reactions that take place inside an organism to keep it alive.

Reproduction: A cell helps in reproduction by the processes of mitosis (in more evolved organisms) and meiosis.

</p3>

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ANSWER

Any five charecterstics of connective cells

Posted by Avni Sharma 6 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 6 years, 5 months ago

It protects and supports the body.
The cells are loosely spaced and embedded in an intercellular matrix.
The matrix may be jelly like, fluid, dense or rigid.
The nature of matrix differs in concordance with the function of the particular connective tissue.

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ANSWER

Explain first law of motion?

Posted by Ankita Kushwaha 6 years, 5 months ago

CBSE > Class 09 > Science

4 answers

Varsha Raj 6 years, 5 months ago

first law of motion is also known as laws of inertia

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Varsha Raj 6 years, 5 months ago

first laws of motion states that a body at rest will continue to be at rest and a body in motion will continue to be in motion until and unless external force acts on it.

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Gaurav Seth 6 years, 5 months ago

Newton's First Law of Motion: Any object remains in the state of rest or in uniform motion along a straight line, until it is compelled to change the state by applying external force.

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Riya Kumari 6 years, 5 months ago

This law states that..a body at rest stay at rest or a body in motion stay in motion ..until any external force is applied to them.. It is also known as law of inertia ...which are of two types ..1.Inertia of rest 2. Inertia of motion

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ANSWER

Why ribosomes are only attached to rough endoplasmic reticulum

Posted by Saurabh Kumar 6 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Ningappa N 6 years, 5 months ago

The ribosomes are helping in protien synthesis

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Palak Arora 6 years, 5 months ago

They are not only attached to RER the nucleus produces ribosomes and for protien synthesis they are attached to RER after the protiens are converted to other form in golgi apparatus

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ANSWER

Maters of liquid are lose than solid?why?

Posted by Akash Shinde 6 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Saurabh Kumar 6 years, 5 months ago

Due to weak intermolecular force

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ANSWER

The school of a boy from his home is 1km to the east .when he reaches back home ,he says that he travelled 2km distance but his displacement is zero .justify your answer

Posted by Fatima Zubair 6 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Pragya Sinha Thanks 6 years, 5 months ago

Distance is total travel and displacement is shortest path from initial point and final point . So , here initial point of the boy is his home and final point is also his home that's why displacement is zero.

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Ningappa N 6 years, 5 months ago

That is starting point from to end point and again replacement the velocity is 0

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Palak Arora 6 years, 5 months ago

It is because after coming in contact with a force it has gone there and came back at the starting point or the house.. that's why no displacement occured

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ANSWER

What is this tissue

Posted by Aniket Das 6 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Ankita Kushwaha 6 years, 5 months ago

Group of cells that that work together are callled tissues

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45516111? 46 6 years, 5 months ago

Group of cells are called tissue

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ANSWER

Why are lysosomes known as suicide bags

Posted by Raji Skeerthy 6 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Raj Ranjan 6 years, 5 months ago

Ot - it

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Raj Ranjan 6 years, 5 months ago

Lysosomes are know as suicide bag because its enzime digest its own cell when ot get damage.

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45516111? 46 6 years, 5 months ago

Because they are capable to digest the whole cell and it can be brust the cell

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ANSWER

Why does the surface area of water becomes ice a convert into ice where as below the surface is liquid?

Posted by Pateljasmin Pateljasmin 6 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Akash Shinde 6 years, 5 months ago

Beacuse,ice density is low than solid

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ANSWER

How does mitosis takes place in human, however mitosis result in two daughter cells of 46 chromosomes each but human being only 46 chromosomes then what about second daughter cell.

Posted by Govind Bhatt Bhatt Govind 6 years, 5 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

I don't understand equation of motion

Posted by Anjali Chandra 6 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Kritika Singh 6 years, 5 months ago

Then u will easily understand

2Thank You

Kritika Singh 6 years, 5 months ago

Firstly u have to understand the concept

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45516111? 46 6 years, 5 months ago

1, v=u+at 2, s=ut+1/2at square 3, 2as= v square-u square

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ANSWER

What do you mean by vice versa

Posted by Bharath Bharath 6 years, 5 months ago

CBSE > Class 09 > Science

1 answers

45516111? 46 6 years, 5 months ago

Viprit

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ANSWER

How an ameoba obtain its food

Posted by Tanishka Swamy 6 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Aditya Kaushik 6 years, 5 months ago

Amoeba obtain its food due to movement of fingerlike structure pessuopodia

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45516111? 46 6 years, 5 months ago

By the process of phagocytosis......

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Harshith K V 6 years, 5 months ago

Vacuole

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ANSWER

Plastids contain their own genetic material

Posted by Bharath Bharath 6 years, 5 months ago

CBSE > Class 09 > Science

2 answers

45516111? 46 6 years, 5 months ago

Yes (ribosomes and DNA)

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Harshith K V 6 years, 5 months ago

Yes

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ANSWER

What is the smallest unit of digestive system

Posted by Yashasvi Misra 6 years, 5 months ago

CBSE > Class 09 > Science

2 answers

45516111? 46 6 years, 5 months ago

According to me nutrients

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Sia ? 6 years, 5 months ago

The smallest organ in the digestive system is somewhat of a tie between the **** and the cecum.

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ANSWER

Hey friends please suggest me a best helpbook of science

Posted by Lovish Kalyan 6 years, 5 months ago

CBSE > Class 09 > Science

10 answers

Lovish Kalyan 6 years, 5 months ago

Something more

0Thank You

Aditya Sehal 6 years, 5 months ago

Pearson

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45516111? 46 6 years, 5 months ago

Lakhmir singh and manjit kaur

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Govind Bhatt Bhatt Govind 6 years, 5 months ago

S.chand

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Kritika Singh 6 years, 5 months ago

Xam idea book is the best bOok of science

1Thank You

Sanskriti Malik 6 years, 5 months ago

Lakhmir Singh is best book for explanation.

1Thank You

Manisa Ghosh 6 years, 5 months ago

Sorry i don't know how was the pardeep book.

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Lovish Kalyan 6 years, 5 months ago

Manisha pardeep book is best or not

2Thank You

Lovish Kalyan 6 years, 5 months ago

Other book

2Thank You

Manisa Ghosh 6 years, 5 months ago

Together with is the best. Try it.

1Thank You

ANSWER

What is plamolysis

Posted by Stanis Kamsuan 6 years, 5 months ago

CBSE > Class 09 > Science

5 answers

45516111? 46 6 years, 5 months ago

When a living plant cell loses water through the process of osmosis there is shrinkage of the contents of cell it is known plamolysis

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Govind Bhatt Bhatt Govind 6 years, 5 months ago

When a living plant cell looses water through osmosis there is contraction of protoplasm, this is called plamolysis.

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Palak Arora 6 years, 5 months ago

When endosmosis occurs then plant cell undergoes plasmolysis

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Manisa Ghosh 6 years, 5 months ago

The water released by plant during transpiration then it get damage and shrinkage, this process is known as plamolysis.

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Sia ? 6 years, 5 months ago

Plasmolysis is contraction of the protoplast of a plant cell as a result of loss of water from the cell.

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ANSWER

What is the function of cells?

Posted by Vaiahali Monani 6 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 6 years, 5 months ago

Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.

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ANSWER

What will happen if apical meristem is damaged cut?

Posted by Geeta Gill 6 years, 5 months ago

CBSE > Class 09 > Science

2 answers

45516111? 46 6 years, 5 months ago

It can't be grown

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Sia ? 6 years, 5 months ago

If apical meristem is damaged or removed from the plant, then the growth of the plant will stop. As this is required for the growth and the elongation of the roots, of the stem and increases the length of the plant.

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ANSWER

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