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9451.

Is work done can be negative

Answer» Yes.
Absolutely yes
Yes
Yes
9452.

Rizobium bacteria

Answer» Rhizobium (plural: Rhizobia) is the nitrogen fixing bacteria present mainly in the soil. The Rhizobia chemically convert the nitrogen from the air to make it available for the plant.These bacteria live in symbiotic relationship with leguminous plants. The Rhizobia live in nodules in the roots of the plant. These bacteria convert atmospheric nitrogen to nitrates and nitrites which can be used by the plants directly. Nitrogen fertilizers are not required.
9453.

1 joule is equal to how many erg

Answer» 1 J=10000000erg
9454.

Where are the seed of gymnosperms formed?

Answer» Inside the fruit
Ovule
9455.

Molecular Mass of:-N2

Answer» N is nitrogen It has 28 molecular mass
40 is the answerAs 20 molecules of sodium multiply by 2
9456.

Convert into moles:-18g of Co2

Answer»
9457.

Convert into Moles:- 40g of H20

Answer»
9458.

What is the uses of fungi

Answer» Yeasts are crucial for the fermentation process that makes beer, wine, and bread. Fermentation occurs in the absence of oxygen and allows the first step of cellular respiration, glycolysis, to continue. Some fungi are used in the production of soy sauce and tempeh, a source of protein used in Southeast Asia.Fungi can produce antibiotics, such as penicillin. Antibiotics are important medicines that kill bacteria, and penicillin was the first identified cure against many deadly bacterial species. Antibiotics only treat bacterial diseases; they can not be used to treat viral or fungal diseases.Mushrooms are fungi that are eaten by people all over the globe.
9459.

What is the usese of monorea

Answer» \tThey are typically unicellular organisms (but one group is mycelial).\tThe genetic material is naked circular DNA, not enclosed by nuclear envelope.Ribosomes and simple chromatophores are the only subcellular organelles in the cytoplasm.\tThe ribosomes are 70 S.70 S Ribosome of E. Coli\tMitochondria, plastids, golgi apparatus, lysosomes, endoplasmic reticulum, centrosome, etc., are lacking.\tSap vacuoles do not occur. Instead, gas vacuole may be present.
9460.

Explain Noble gasses

Answer» Noble gas has one atom in each molecule...It is not a defination but u can write it so....
The gases whoes electronic configuration is filled
The gases which does not involve in chemical reaction is called noble gas. Eg.Neon,Helium etc.
9461.

What is difference between gravity and gravitation

Answer» Gravity is force of attraction of earth. And gravitation is force of attraction of two object
Gravity means when two bodies of universe attract each other and one of them should be earth.Gravitation means attraction between any two bodies of universe.
9462.

What is bilogycycle

Answer» Biological life cycleA life cycle is a period involving one generation of an organism through means of reproduction, whether through asexual reproduction or sexual reproduction.In regard to its ploidy, there are three types of cycles; haplontic life cycle, diplontic life cycle, diplobiontic life cycle.These three types of cycles feature alternating haploid and diploid phases (n and 2n).The haploid organism becomes diploid through fertilization, which joins of gametes.This results in a zygote which then germinates.To return to a haploid stage, meiosis must occur.The cycles differ in the product of meiosis, and whether mitosis (growth) occurs.Zygotic and gametic meioses have one mitotic stage and form: during the n phase in zygotic meiosis and during the 2n phase in gametic meiosis.Therefore, zygotic and gametic meiosis are collectively term haplobiontic (single mitosis per phase).Sporic meiosis, on the other hand, has two mitosis events (diplobiontic): one in each phase.
9463.

Justify the statement" prevention is better than cure"?

Answer» Please write the main points how we prevent to the diseases
prevention is better then cure because if we are prevent then no disease can touch us but if we are not prevent then we face many problem during the time of disease and also it affect to our body system and it be bed to wrost if we are not prevent and want to cure
9464.

Name any two exotic breeds of cow

Answer» Jersey,brown swiss and many others
9465.

If acceleration is 32m/s. The mass of the object is 49kg. Find frictional force

Answer» Given, Acceleration=32m/s and mass=49kgFrictional Force=32×49=1568N
9466.

Which part of xylem is dead

Answer» Xylem tracheids , xylemvessels and xylem fibres are dead
Ha ha !!! What a question ????
Except xylem parenchyma all are dead
9467.

What is SI unit of amount of substance

Answer» mole
9468.

Difference between bryophyta and thallophyta .

Answer» 17
9469.

What is atomic number of.Chlorine

Answer» 17
17
17 is AM
35.5
17
9470.

Differenciate between gravitational force and gravity.

Answer» Force of attraction between object is called gravitational force /force of gravitation due to object is called gravity
My friend\'s name is also suhana
Good question
9471.

Diagram of parenchyma and location of adipose tissue

Answer»
9472.

What is meant by valacly

Answer» Its valency gajanan.it is the combining capacity of an element.also u can say that the no.of electrons in the last orbit/shell.
Combining capacity of an element is called its valancy
9473.

What is the difference between infectious and non infectious diseases?

Answer» The disease which spread by contact or someone like cough,cold is called infectious disease .The disease which does not spread to each other is called non infectious disease .Example are AIDS etc
Infectious diseases is from cough
The disease which spreads by contact with each other is called infectious disease. The disease which does not spread is called non infectious disease.
9474.

If 3 ml of aceton is dissolve in 147 ml of water. What is its concentration (v/v).

Answer» 2% ans
2%
9475.

From which jelly like material does the ribosome get attached to the rough endoplasmic reticulum.

Answer» The right answer of these question is ribophorin.
Cytoplasm
9476.

Name some edible fingies

Answer» Mushrooms.
9477.

What is difference between maleria and dengu?

Answer» The first difference is that malaria is caused by female anelopheles mosquito while dengu is caused by Ades mosquito.The second one is that the casual organism of malaria is plasmodium while the casual organism of dengu is dengu virud
9478.

is pine example of gymnosperms

Answer» Gymnosperms(i) The term gymnosperm is derived from two different words. They are\tgymno– means naked and\tsperma– means seed(ii) The plants belonging to this group have naked seeds.(iii) The plants of this group are generally perennial, evergreen and woody.(iv) Examples of plants belonging to this group are pines and cycas.
yes
9479.

Describe the relative density

Answer» Relative density means that density is more when object\'s mass is more and density is less of object when object\'s mass is less.
9480.

State the function of melanine

Answer» An informal survey of my colleagues revealed that most dermatologists believe the primary function of melanin in humans is to act as a sunscreen to protect us from ultraviolet (UV) radiation in sunlight
9481.

Difference between g and G (ch-gravitation)

Answer» The difference between \'g\' and \'G\' are as follows:1. G is always constant every where but \'g\' is not costant 2.G is scalar quantity but \'g\' is vector quantity.
9482.

What is an average power ?

Answer» Average power of a body is defined as the ratio of the total work done by the body to the total time taken.Power = Energy consumed/ Time taken = work done / Time\xa0
9483.

What is si unit ofgravity

Answer» The unit of gravitational force between two objects isNewton
There is no exact unit of gravity. The unit of gravitational acceleration ism/s square
I know what is rightunit
Newton is a unit of force
Newton
Newtoh
Newton
9484.

Is there anybody from hansraj public school in panchkula

Answer»
9485.

What is the si unit of kinetic and potential energy

Answer» Hey user!!Here is your answer...1 joule Hope this will help you Thanqu
Joule
Joule
Kinetic energy ka joules hai
1 JOULe
9486.

Ozone layer found in which ĺayer of earth....

Answer» Stratosphere
Previous answer is wrong. The answer is stratosphere.
Trophosphere
9487.

What is the slowest animal in the world?

Answer» Sloth
Bumblebee bat
Snail
Snail
Turtle
9488.

What is "G" and "g" in gravitation chapter physics

Answer» G is a constant known as gravitational constant
"G" means the gravity of bigger object that is earth ."g" refers to the gravity of smaller object on earth
Sorry 9.8 m/s square...but u can also write 10 to make calculation easy....it is not wrong
G is 6.67x10 raise to power -11.....and g is 9.7m/s square
G-gravity of earth g-gravitational force
9489.

Explain 3 kepler\'s law

Answer» What do you mean kepler\'s 3 laws or kepler\'s 3rd law
Kepler’s third law\xa0Kepler’s third law, the law of periods, defines the relationship between the orbital period of a planet and the average radius of its orbit.\xa0The orbital period of a planet, denoted by T, is the time taken by the planet to make a complete revolution around the sun along its orbit.The average radius of the orbit of a planet is also the mean distance of the planet from the sun.\xa0The law of periods states that the square of orbital period, T, of a planet is proportional to the cube of its mean distance, R, from the sun.The law of periods can be expressed as T2 α R3.
9490.

Name the physical quantity

Answer»
9491.

What is meant by metrology

Answer» Science of weights and measures, determination of conformance to specification or technical requirements, and development of standards. Not to be confused with Meteorology, the science of weather phenomenon.
Metrology is the science of measurment . It establishes a common understanding of units, crucial in linking human activities. Metrology is divided into three basic overlapping activities. The first being the definition of units of measurement, second the realisation of these units of measurement in practice, and last traceability, which is linking measurements made in practice to the reference standards.
Difine metrology
9492.

Endoplasmic reticulum define

Answer» The endoplasmic reticulum (ER) is a large network of membrane-bound tubes and sheets. It looks like long tubules or round. There are two types of ER– rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). RER looks rough under a microscope because it has particles called ribosomes attached to its surface. The ribosomes, which are present in all active cells, are the sites of protein manufacture. The manufactured proteins are then sent to various places in the cell depending on need, using the ER. The SER helps in the manufacture of fat molecules, or lipids, important for cell function.
it is membrane network which is found near to nucles
9493.

Thank you for so much

Answer»
9494.

An object weight 25kg on surface of earth what will be the weight on moon and on the earth

Answer» =1/6*25=4.1kg approximately
Mass of object on earth =25 kg Mass of object on moon = 1/6*weight of object on earth
Mass of object =25kg We= m.ge =25*9.8 =245 NWm =m.gm =25*9.8/6 or 245/6 =40.83N
9495.

If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why ?

Answer»
9496.

What is the meaning of plasmid

Answer» According to me plasmid is a small DNA molecule.
Plasmid is the additional chromosome preseent in the some of the bacteria cells
9497.

What is dicusion

Answer» Discussing something in a group
9498.

What is sonar tecnique?

Answer» Sonar is technique that uses sound propagation to navigate
9499.

S. I unit of the density

Answer» SI- kg/m3CGS- g/cm3
Kg/m3
Kg/m3
Kg/m3
kg/m3
9500.

What is the diffrence between lnfectious and non-infectious

Answer» \tINFECTIOUS DISEASESNON-INFECTIOUS DISEASES1. Caused due to attack of pathogens1. Caused by factors other than pathogens2. Caused due to extrinsic factors2. Caused due to intrinsic factors3. Transmitted from one person to another3. Do not get transmitted from one person to another4. Transmission of diseases occurs through direct contact or some medium (air, water, vectors)4. Transmission in case of hereditary diseases is from parent to offspring5. Community hygiene can reduce the occurrence of these diseases5. Community hygiene is ineffective in reducing the occurrence of these diseasesE.g. Cholera, MalariaE.g. Diabetes, Goitre\t