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DNA stands for Deoxyribonucleic acid. It is a double stranded molecule that helps in carrying genetic information from parents to offsprings.

DNA (deoxyribosenucleic acid)is a double helical structure found in animal cells...it has adenine,thimine,gaunine,cytosin bases...it helps in transfer of hereditary traits from one generation to another..Types of RNA are...-1. m-rna2. r-rna3. t-rna

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Tropic movement is a type of plant movement in which it is moved towards stimuli it can be to the direction of stimuli or away from stimuli.its types are1)phototropism-movement towards light eg. sunflower

2)hydrotropism3)thigmotropism4)chemotropism

1)Not brushing teeth regularly allows plaque to build up and attack the tooth enamel. Plaque Formation: Plaque is caused when bacteria, acid, food particles, and saliva all combine in your mouth.Hence this cause toothache.2)Calcium and Magnesium Phosphate3)We should brush our teeth regularly so as to prevent cavity formation and decay

colour blind boy can’t receive a colour blind ‘gene’ from his father, even if his father is colour blind, because his father can only pass an X chromosome to his daughters.

A colour blind daughter therefore must have a father who is colour blind and a mother who is a carrier (who has also passed the faulty ‘gene’ to her daughter). If her father is not colour blind, a ‘carrier’ daughter won’t be colour blind. A daughter can become a carrier in one of two ways – she can acquire the ‘gene’ from a carrier mother or from a colour blind father.

This is why red/green colour blindness is far more common in men than women.

Blue colour blindness affects both men and women equally, because it is carried on a non-sex chromosome.

For the sake of the following explanation a normal X chromosome is shown as (X) whilst a colour blind carrying X chromosome is shown in bold (X).

The colour blind ‘gene’ is carried on one of the X chromosomes. Since men have only one X chromosome, if his X chromosome carries the colour blind ‘gene’ (X) he will be colour blind (XY). A woman can have either:-(i) two normal X chromosomes, so that she will not be colour blind or be a carrier (XX),(ii) or, one normal X and one colour blind carryingXchromosome, in which case she will be a carrier (XX), or rarely(iii)she will inherit a colour blindXfrom her father and a colour blindXfrom her mother and be colour blind herself (XX). She will pass on colour blindness to all of her sons if this is the case.

See the tables below to understand how people can become colour blind and how colour blindness is passed on to future generations.

Option A

25% is correct answer

Question No: (1) When Indian national football team was established?Answer: 1937.

Question No: (2) When BHIM App was launched in India?Answer: BHIM App was launched by PM Narendra Modi in New Delhi on 30 December 2016.

Question No: (3) Headquarter of Indian Space Research Organisation (ISRO) is where?Answer: Bengaluru, India.

Question No: (4) When Earth Hour observed worldwide?Answer: 25th March 2017.

Question No: (5) What is the height of Statue of Liberty (in the United States)?Answer: 93 m.

Question No: (6) What is the capital of Saudi Arabia country?Answer: Riyadh.

Question No: (7) ‘Digital Gold’ scheme was launched in India by which company?Answer: Paytm.

Question No: (8) Who was the 12th Prime Minister of India?Answer: Inder Kumar Gujral.

Question No: (9) Johannesburg is the largest city of which country?Answer: South Africa.

Question No: (10) When World wildlife Day Observed in 2017 ?Answer: 3rd March 2017.

Question No: (11) Where is the Imperial Towers in India?Answer: Tardeo, Mumbai.

Question No: (12) What is the national bird of the United Kingdom country?Answer: European Robin.

Question No: (13) When Aurangzeb re-imposed the Jaziya tax?Answer: 1679.

Question No: (14) By which software in computer/mobile we used to see web pages on Internet?Answer: Web Browsers like; Chrome, Mozilla, Internet Explorer.

Question No: (15) Which topology system is used for the largest networks?Answer: Star.

Question No: (16) Which planet is nearest to the Earth?Answer: Mars.

Question No: (17) Rate of growth of plant is measured by which instrument?Answer: Auxanometer.

Question No: (18) What is the full explanation of IMF ?Answer: International Monetary Fund.

Question No: (19) In the Olympic Flag how many rings are there?Answer: Five.

Question No: (20) Which animals can live longest without water?Answer: Rats.

1. Thespherical shape of a dropis due to _______ ?Answer:Surface tension

*2. Who is the presentRBI Governor?Answer:Urjit Patel

3.Earthis protected fromUltra voilet radiationby _______ ?Answer:Ozone

4. If we move fromequator to polethe value ofacceleration due to gravity"g"_______ ?Answer:Increases

5. Capital ofVeneZuela?Answer:Karakkas

6.Solid carbon dioxideis known as ______?Answer:Dry ice

7.VATwas first introduced in whichcountry?Answer:France

8. Which instrument is used tomeasure blood pressure?Answer:Sphygmomano meter

9.How manycoastal states are in India?Answer:9

10. The country which lost the largest number of people in the2nd world war?Answer:Japan

11.How many fundamental duties are laid in the constitution of India?Answer:11

11 a.How many fundamental rights are recognized in the constitution of India?Answer:6

12. Which is theBiggest Museum?Answer:British Museum, London

13.Shoraisthe parliamentof _______?Answer:Afghanistan

14. Who is thefirst person to get Param vir chakra?Answer:Major Somnath Sharma

15. Which is thelargest fresh water lake in India?Answer:Wular Lake

15 a.Wular Lake is in which state?Answer:Jammu and Kashmir

16. Which is thelongestriverin peninsular India ?Answer:Godavari River

16 a. Rivergodavari originatesfrom ?Answer:Brahmagiri Mountain

17. What is thefull formofSIM?Answer:Subscriber Identity Module

18. Who is thefounderofVan Mahotsav?Answer:K.M. Munshi

19. What is thefull form ofhttps?Answer:Hypertext Transfer Protocol Secure

20. Where isSardar Sarovarproject situated ?Answer:Gujarat

Miracles happen to those who believe in them: This thought by Paulo Coelho indicates towards the power of strong belief. He says that miraculous things may happen if you start believing in them.

It is because of the crossing over of theuppermotor neurons to the opposite site along their course that theright hemisphere controlstheleft sideof the body and theleft hemisphere controls the right. This crossing over is known as Decussation.

why crossing over of neurons

The exchange site of material of blood cells to the surrounding cells are the smallest blood vessels which cell walls are one cell thick. This is called capillaries. By Crossing blood capillary's thin wall the exchange of materials between the blood cells and the surrounding cells happens

In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.

The bulk of nitrogen in nature is not fixed by chemical industries.

2 Chemical industries

Option (2) is correct.

2 is correct

the correct option is 2

Answer

The menstrual cycle is a series of cyclic physiologic changes that take place inside the female reproductive tract in primates. The whole cycle takes around 28 days to complete. The end of the cycle is accompanied by the breakdown of uterine endothelium, which gets released in the form of blood and mucous through the vagina. This is known as menses. The follicle stimulating hormone (FSH), luteinizing hormone (LH), estrogen, and progesterone are the various hormones that regulate the menstrual cycle. The level of FSH and LH secreted from the anterior pituitary gland increases during the follicular phase. FSH secreted under the influence of RH (releasing hormone) from the hypothalamus stimulates the conversion of a primary follicle into a graafian follicle. The level of LH increases gradually leading to the growth of follicle and secretion of estrogen. Estrogen inhibits the secretion of FSH and stimulates the secretion of luteinizing hormone. It also causes the thickening of the uterine endometrium. The increased level of LH causes the rupturing of the graafian follicle and release the ovum into the fallopian tube. The ruptured graafian follicle changes to corpus luteum and starts secreting progesterone hormone during the luteal phase. Progesterone hormone helps in the maintenance and preparation of endometrium for the implantation of the embryo. High levels of progesterone hormone in the blood decrease the secretion of LH and FSH, therefore inhibiting further ovulation.

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a)Juvenile phase: It is the period of growth in an individual organism after its birth and before it reaches reproductive maturity. (b) Reproductivephase: It is the period when an individual organism reproduces sexually.

b .........s phase.....

option b = s phase DNA duplication takes place

s phase..................

They contain symbiotic bacteria called rhizobia within nodules in their root systems, producingnitrogencompounds that help the plant to grow and compete with other plants. When the plant dies, thefixed nitrogenis released, making it available to other plants; this helps to fertilize the soil

Nitrogen fixationis a process by whichnitrogenin theairis converted intoammonia(NH3) or related nitrogenous compounds.[1]Atmospheric nitrogen is moleculardinitrogen(N2), a relatively nonreactive molecule that is metabolically useless to all but a few microorganisms. Biological nitrogen fixation converts N2into ammonia, which is metabolized by most organisms.

Nitrogen fixation is essential to life because fixed inorganic nitrogen compounds are required for thebiosynthesisof all nitrogen-containingorganic compounds, such asamino acidsandproteins,nucleoside triphosphatesandnucleic acids. As part of thenitrogen cycle, it is essential foragricultureand the manufacture offertilizer. It is also, indirectly, relevant to the manufacture of all chemical compounds that contain nitrogen, which includes explosives, most pharmaceuticals, and dyes.

Nitrogen fixation is carried out naturally in thesoilby a wide range ofmicroorganismstermeddiazotrophsthat includebacteriasuch asAzotobacter, andarchaea. Some nitrogen-fixing bacteria havesymbioticrelationships with someplantgroups, especiallylegumes.[2]Looser non-symbiotic relationships between diazotrophs and plants are often referred to as associative, as seen in nitrogen fixation onriceroots. Nitrogen fixation also occurs between sometermitesandfungi.[3]It also occurs naturally in the air by means ofNOxproduction bylightning.[4][5]

All biological nitrogen fixation is effected by enzymes callednitrogenases.[6]These enzymes containiron, often with a second metal, usuallymolybdenumbut sometimesvanadium.

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Themenstrual cycleis the monthly series of changes a woman's body goes through in preparation for the possibility of pregnancy. Each month, one of the ovaries releases an egg — a process called ovulation. At the same time, hormonal changes prepare the uterus for pregnancy. Luteinizing hormoneandfollicle-stimulating hormone, which are produced by the pituitary gland, promote ovulation and stimulate the ovaries to produceestrogenandprogesterone.

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Menstruationends naturally in middle age with the onset of menopause. ...Cessation of menstruationinwomenwho have established a regularmenstrual cycle, or in girls or teens who show other signs of anorexia, is a cause for medical concern. Alsoknown asamenhorrhea

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The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processe

Nitrogen is present in the environment in a wide variety of chemical forms including organic nitrogen,ammonium(NH+4),nitrite(NO−2),nitrate(NO−3),nitrous oxide,(N2O),nitric oxide(NO) or inorganic nitrogen gas (N2). Organic nitrogen may be in the form of a living organism,humusor in the intermediate products of organic matter decomposition. The processes in the nitrogen cycle is to transform nitrogen from one form to another. Many of those processes are carried out bymicrobes, either in their effort to harvest energy or to accumulate nitrogen in a form needed for their growth. For example, thenitrogenous wastesin animalurineare broken down bynitrifying bacteriain the soil to be used as new. The diagram {besides} alongside shows how these processes fit together to form the nitrogen cycle

Step1-Nitrogen Fixation- Special bacteria convert thenitrogen gas (N2 ) to ammonia (NH3) which the plants can use.Step2- Nitrification- Nitrification is theprocesswhich converts the ammonia into nitrite ions which the plants can take in as nutrients.

Nitrogen fixation is a process by which nitrogen in the Earth's atmosphere is converted into ammonia (NH3) or other molecules available to living organisms. Atmospheric nitrogen or molecular dinitrogen (N2) is relatively inert: it does not easily react with other chemicals to form new compounds.

Carbon is the fourth most abundant element in the universe and is absolutely essential to life on Earth. In fact, carbon constitutes the very definition of life, as its presence or absence helps define whether a molecule is considered to be organic or inorganic. Every organism on Earth needs carbon either for structure, energy, or, as is the case of humans, for both. Discounting water, you are about half carbon. Additionally, carbon is found in forms as diverse as the gas carbon dioxide (CO2), and in solids like limestone (CaCO3), wood, plastic, diamonds, and graphite.

The movement of carbon, in its many forms, between the atmosphere, oceans, biosphere, and geosphere is described by the carbon cycle.

All plants require adequate amount of nutrients for their growth and development. Nutrients such as Nitrogen, phosphorus and potassium represent the three most important nutrients plants get from the soil along with other micronutrients. When plants do not get enough of these nutrients, plants start showing deficiency symptoms such as stunted growth and poor colour.

Precipitation is an example of abiotic factor Since all other three are living organisms so biotic whereas precipitation is an atmospheric phenomenon so its abiotic Correct answer (b)

1)If they enter from the air through nose,they are likely to reach the lungs.this is how tuberculosis causing bacterium enters the body.

2)If they enter through mouth,they can stay in the gut lining like typhoid causing bacteria or they may go to the liver like jaundice causing virus.

3) Through mosquito bites,they may enter the liver and then to RBCs like malaria causing microbes or they may reach to brain like Japanese encephalitis virus that causes brain fever.

Firefly bioluminescence requires the presence of calcium, adenosine triphosphate (ATP), the chemical luciferan, and the enzyme luciferase within the light organ. When oxygen is introduced to this combination of chemical ingredients, it triggers a reaction that produces light.

Plants can be divided into two groups: Flowering plants, for example, sunflowers, orchids, and most types of tree. The other group is Non flowering plants, which includes mosses and ferns. All plants make their own food, taking energy from sunlight.

since, the language vary from place to place and the same thing that you pronounce in English may not be same in any other language. The common name of mango may not be same in any other part of the world.For example mango is no more mango for france and they know it as mangue . hence, if you ever visit France and ask for Mango they might not understand your wish.therefore Binomial Nomenclature is suggested to make easy conversation and apply same understanding of particular thing to every citizen of the world.

Haemoglobin

Haemoglobin (Hb) is an iron-containing pigment, which binds to and transports oxygen. Haemoglobin levels are determined by measuring the colour intensity of a blood sample in which the red cells have been lysed (broken open).Red cell count (RBC)

The red cell count (RBC) is an estimation of the number of red cells present in 1ml of whole blood. The exact method used to count the red cells varies between different designs of automated cell counter. The normal red cell count varies according to age and sex. If performed on an electronic counter this is a very accurate estimation. The principle source of error is the quality of the blood sample submitted.

Mean cell volume (MCV)

Mean cell volume (MCV) is a measurement of the average size of the red cells. The normal range of the MCV is between 80 and 99fl.

Packed cell volume (PCV)

The packed cell volume (PCV) is often referred to as the haematocrit. It measures what percentage of a given volume of blood is made up of red blood cells. On automated counters the PCV is usually a calculated value derived from the RBC and the MCV. The PCV is affected by many conditions other than anaemia. Certainly the PCV alone can never be used to diagnose anaemia. The PCV may be reported as a percentage or as litres/litre.

Disease&Mutation:Sickle Cell. ... Some red bloodcellsbecomesickle-shaped and these elongatedcellsget stuck in small blood vessels so that parts of the body don't get the oxygen they need.Sickle cell anemiais caused by a single code letter change in the DNA.

option 2

VSD IS CORRECT ANSWER

C. is correct answer

C) is correct answer

option C) is the right answer

ans .C or vsd is correct answer

option c vsd is the correct answer

Genetic sulfite oxidase deficiency was described in 1967 in a child. It resulted from the inability to form the molybdenum coenzyme despite the presence of adequate molybdenum. The deficiency caused intellectual disability,seizures,opisthotonus, and lens dislocation.

20 N in direction of 30 degree is 20cos30 I.e.

The pituitary gland releases follicle stimulating hormone (FSH) and luteinizing hormone (LH) into the male system for the first time. FSH enters the testes, stimulating the Sertoli cells, which help to nourish the sperm cells that the testes produce, to begin facilitating spermatogenesis

The pituitary gland releases follicle stimulating hormone (FSH) and luteinizing hormone (LH) into the male system for the first time. FSH enters the testes, stimulating the Sertoli cells, which help to nourish the sperm cells that the testes produce, to begin facilitating spermatogenesis

Deficiency of vitamin C causes Rickets and scurvy.

Potato A acts as a control of the experiment. It is very necessary for comparing the results of the experiment and shows that if the conc. of water is same on both sides, there will be no movement of water.

lactometer is the device used to measure the purity of milk

A primitive organism or lower organism is the one which has a simple body structure and ancient body design or features that have not changed much over a period of time. An advanced organism or higher organism has a complex body structure and organization. For example, anAmoebais more primitive as compared to a starfish.Amoebahas a simple body structure and primitive features as compared to a starfish. Hence, anAmoebais considered more primitive than a starfish

Additive inverse : 3/5

Multiplicative inverse : -5/3