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useful micro organisms are - bacteria, fungi, algae, protozoa...this micro organisms are useful for our environment..

some miceo organisms helps to clean the environment...these are BACTERIA,FUNGI,ALGAE,PROTOZOA,ARCHAREA

Microorganisms are small, living creatures which are invisible to our naked eye. Hence they are are also known as microorganisms or microscopic organisms. These organisms can be unicellular or multicellular. Among all microorganisms, some are more beneficial and harmless, while others harmful and disease-causing pathogens.Food Industry and Beverages

The role of microorganisms in food preparation and beverage manufacturing is known for ages. They are used in the manufacture of bread, curd, wine, and alcohol etc.Lactobacillusbacteria are responsible for the curd formation. They multiply and convert milk into curd. Another example is Yeast which is used commercially for alcohol and wine production. The process is called fermentation. Yeast is also used in baking industries for the preparations of bread and cakes.

Micro-flora

Bacteria are not only present outside the human body, they live inside the body too. This aggregate collection of microorganisms that is present on the human body is termed as Microflora.

Bacteria are also present in the gut and they aid the process of digestion by releasing certain enzymes. They live in symbiotic relationship with a human. Other roles of microflora are vitamin K production which is crucial in enabling blood clotting. They also prevent the invasion of the body by other fatal microbes.

Pharmaceutical Industry

Antibiotics go hand in hand withmicrobesin the medical field. Typically, antibiotics are obtained from a weakened form of an otherwise harmful microorganism. This is then injected into the body and the body learns to fight off the diseases caused by these organisms. Examples of this include mumps and the measles.

Environment

In the environment, microorganisms have two vital roles- one is an enhancement of soil fertility another is cleaning. Azotobacter, Rhizobium, Clostridium are few examples of Nitrogen-fixing bacteria which play a primary role in transforming atmospheric nitrogen into inorganic compounds which are then used by the plants. Without this process, the vast majority of the nitrogen present in the atmosphere becomes unusable.

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Bacterial Biofertilizer:Rhizobium,Azotobacter,Pseudomonasetc.

Macrophages work slowly while thw mulitplication of bacteria occurs rapidly

HIV AIDS, gonorrhoea, syphilis are some examples of sexually transmitted disease

Ans :- If the objective is solely to reduce congestion, theeffectson theenvironment and safety are not always positive. Limiting speeds,trafficand parking has positive consequences, but may increase risks outside the area concerned. Urban structure is affected by several processes increasing travel demand.

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Asexual reproduction is the reproduction which produces similar offspring as that of parents. it is uniparental

HIV is an example of sexually transmitted disease.

aids is a sexually transmitted disease

HIV AIDS, gonorrhoea, syphilis are some examples of sexually transmitted disease

. Climax, in ecology, the final stage of biotic succession attainable by a plant community in an area under the environmental conditions present at a particular time.

The answer is option C

The water cycle is driven primarily by the energy from the sun. This solar energy drives the cycle byevaporatingwater from the oceans, lakes, rivers, and even the soil. Other water moves from plants to the atmosphere through the process oftranspiration

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Trajectory is the path followed by a projectile flying or an object moving under the action of given forces.

Factors affecting the flight path of a Projectile are:

Gravity.

AirResistance.

Speedof Release.

Angle of Release.

Height of Release.

Spin.

Muzzle Velocity

Answer: 1Explanation:Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how they collide with each other

Number 1. Actually evaporation isthe vapor which grows from sea to condense to form cloud

All the cells work together, and are dependant on each other. You can see this by noticing how the body systems work together(ex. respiratory and circulatory systems). Also, if some nerve cells are damaged, it would take longer for you to react to some things, because the signals would have to find another path to travel to get to where they need to go.

The maindifference between SA node and AV nodeis that theSA nodegenerates cardiac impulses whereas theAV noderelays and intensifies cardiac impulses. ...SA node and AV nodeare two elements of the cardiac conduction system that controls the heart rate

Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The word comes from Latin vibrationem ("shaking, brandishing"). The oscillations may be periodic, such as the motion of a pendulum—or random, such as the movement of a tire on a gravel road

The cell body, also called the soma, is the spherical part of theneuronthat contains thenucleus. The cell body connects to thedendrites, which bring information to theneuron, and theaxon, which sends information to otherneurons.

The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails. In mammals and most other vertebrates, two lungs are located near the backbone on either side of the heart.

Ocean currenthas beendefinedas the persistent, dominantly horizontal flow ofocean water. It is the general movement of a mass ofoceanic waterin a definite direction which is more or less similar towaterstreams (rivers).

Body scales is not found in vertebrates.

These terms are just for the name, this doesn't mean that their blood is actually warm and cold.

The animals which can regulate their body temperature are said to be warm blooded animals, like mammals and birds. The regulate their temperature through processes like perspiration and all.

The animals whose body temperature is dependent on the surroundings, like reptiles, and some mammals.

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The accumulation of urea in the blood is called as Uremia. Its an accumulation of urea and other nitrogenous waste products in the blood which are excreted by the kidneys into the urine.

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Vena cava The pulmonary artery delivers blood rich in carbon dioxide (and lacking in oxygen) to the capillaries that surround the air sacs.

When a force of 5N gives an acceleration of 10ms-² toa bodythen its mass = 5/10 kg = 0.5kgso, m₁ = 0.5kg

when a force of 5N gives an acceleration of 20ms⁻²toa bodythen its mass = 5/20 kg = 0.25kgso, m₂ = 0.25kgwhen the two bodies r tied total mass of the system bcomes = 0.75kgso acceleration of the system will b =force/mass = 5/0.75 = 6.67ms⁻²

There are four part are divided in brain lobes. frontal, parietal, occupital and temporal.

The human brain is divided into three parts:

1.Thebrainstemwhich has thepons, themidbrain, and themedulla oblongata.

2.Thecerebellumwhich forms thehindbrainalong with the brainstem and is located below the cerebrum.

3.Thecerebrumwhich is the largest section of the brain, is divided into two hemispheres (the left and the right) each of which has four lobes: thefrontal, thetemporal, theparietal, and theoccipital.

there are four are frontal, parietal,occupital and temporal

fore brain, mid brain ,hind brain......

3 parts in mind it is its ans

angle from the preceding stem.

Ravenalasgrowing between two buildings inKinshasa,Democratic Republic of Congo. The plane (here perpendicular to the north-south axis) of these two plants is orientated to maximize daylight absorption.

Phototropismis the growth of an organism in response to a light stimulus. Phototropism is most often observed inplants, but can also occur in other organisms such asfungi. The cells on the plant that are farthest from the light have a chemical calledauxinthat reacts when phototropism occurs. This causes the plant to have elongated cells on the farthest side from the light. Phototropism is one of the many planttropismsor movements which respond to external stimuli. Growth towards a light source is called positive phototropism, while growth away from light is called negative phototropism (skototropism).[1]Most plant shoots exhibit positive phototropism, and rearrange their chloroplasts in the leaves to maximize photosynthetic energy and promote growth.[2][3]Some vine shoot tips exhibit negative phototropism, which allows them to grow towards dark, solid objects and climb them. The combination of phototropism and gravitropism allow plants to grow in the correct direction.[4]

Demonstration of phototropismA young seedling is grown in a phototropic chamber. It consists of a tight box. It has a-removable- lid. Its inner side is painted black. It has a glass window one side. Therefore, light can enter only from this side. Phototrophic behaviour is studied on coloured screens. It shows that the maximum phototropic effect is produced in the blue violet end of the spectrum and the least in the yellow rays.

(B) foreign DNA in all it's cells. is the right answer

B) foreign DNA in all it's cells.is correct opstion

b) is the right answer of the following

The production of recombinant proteins is one of the major successes of biotechnology. Animal cells are required to synthesize proteins with the appropriate post-translational modifications. Transgenic animals are being used for this purpose. Milk, egg white, blood, urine, seminal plasma and silk worm cocoon from transgenic animals are candidates to be the source of recombinant proteins at an industrial scale. Although the first recombinant protein produced by transgenic animals is expected to be in the market in 2000, a certain number of technical problems remain to be solved before the various systems are optimized. Although the generation of transgenic farm animals has become recently easier mainly with the technique of animal cloning using transfected somatic cells as nuclear donor, this point remains a limitation as far as cost is concerned. Numerous experiments carried out for the last 15 years have shown that the expression of the transgene is predictable only to a limited extent. This is clearly due to the fact that the expression vectors are not constructed in an appropriate manner. This undoubtedly comes from the fact that all the signals contained in genes have not yet been identified. Gene constructions thus result sometime in poorly functional expression vectors. One possibility consists in using long genomic DNA fragments contained in YAC or BAC vectors. The other relies on the identification of the major important elements required to obtain a satisfactory transgene expression. These elements include essentially gene insulators, chromatin openers, matrix attached regions, enhancers and introns. A certain number of proteins having complex structures (formed by several subunits, being glycosylated, cleaved, carboxylated...) have been obtained at levels sufficient for an industrial exploitation. In other cases, the mammary cellular machinery seems insufficient to promote all the post-translational modifications. The addition of genes coding for enzymes involved in protein maturation has been envisaged and successfully performed in one case. Furin gene expressed specifically in the mammary gland proved to able to cleave native human protein C with good efficiency. In a certain number of cases, the recombinant proteins produced in milk have deleterious effects on the mammary gland function or in the animals themselves. This comes independently from ectopic expression of the transgenes and from the transfer of the recombinant proteins from milk to blood. One possibility to eliminate or reduce these side-effects may be to use systems inducible by an exogenous molecule such as tetracycline allowing the transgene to be expressed only during lactation and strictly in the mammary gland. The purification of recombinant proteins from milk is generally not particularly difficult. This may not be the case, however, when the endogenous proteins such as serum albumin or antibodies are abundantly present in milk. This problem may be still more crucial if proteins are produced in blood. Among the biological contaminants potentially present in the recombinant proteins prepared from transgenic animals, prions are certainly those raising the major concern. The selection of animals chosen to generate transgenics on one hand and the elimination of the potentially contaminated animals, thanks to recently defined quite sensitive tests may reduce the risk to an extremely low level. The available techniques to produce pharmaceutical proteins in milk can be used as well to optimize milk composition of farm animals, to add nutriceuticals in milk and potentially to reduce or even eliminate some mammary infectious diseases.

foreign DNA in all its cell

the correct answer is b

the anwer is B..foreign DNA in all its cells

b) is the right answer of the following

option b is the right answer

option b is a correct answer

B is the correct answer

b. is the correct answer

option b is the right answer

option b is correct answers

b is the right ans.......

foreign DNA in all its cells

answer is C it is correct answer

(B). foreign DNA in all its cells.

transgenic animal has foreign DNA

c is the correct ans

b. foreign dna in all its cells

B answer is right foreign DNA in all its cells.

{B}foreign DNA in all its cells

B) foreign DNA in all its cells

b foreign dna in all its cells is right

d is right answer ✨😄😃

(B) foreign DNA in all its cells

b is the right answer to this question

DNA is right answer thise answer is right

transgenic animals are those whose dna is manipulated artificially so B is correct option

B the correct answer foregin DNA all its cells

DNA is the correct answer

[B] foreign DNA in all its cells.

(B) foreign DNA in all its cells

B bcz animals have genetic material DNA

both A and b because if DNA is foreign .so rna automatically will be foriegn

foreign DNA in all its cell because it has the property to replicate

b is the right answer

option (b) foreign DNA in all its cells is right answer...

this question answer is option b

ans (A) ..Transgenic animalsareanimals(most commonly mice) that have had a foreign gene deliberately inserted into their genome. Suchanimalsare most commonly created by the microinjection of DNA into the pronuclei of a fertilised egg

ANS foreign DNA in all its cells.

the correct answer is C.

B option carrect hai

B) foreign DNA in all its cell is right

foreign dna in all its cells

B foreign Dna in all its cells

B) foreign DNA in all its cells

b_foreign DNA in all its cell

option (c) sahi hai both (A) and (B) hai

answer is c correct hai

forging DNA in all its sales

foreign ,DNA in all its cells is correct answer

foreign DNA in it's cell.

option b is correct foreign dna

c is correct b cauz both RNA and DNA is in the transgenic animals

b foregin dna is a write answer

ans b is a right ans

B.foreign DNAin all its cells

foreign DNA in all its cells is correct and I cleared it ok

1 is the correct option is b

B)foreign DNA because in all living organism only DNA is genetic material.DNA is responsable for all changes.(exception viruses)

foreign dna in all its cell is correct option bcz in that animal dna is introduced with the help of vector

Foreign DNA in all its ceels

DNA in all its cells is the right answer

option (B) is a correct

c) is the right answer

trangenic animal have forgein DNA in all its cell. bcz it have dna Not RNA

foreign DNA in all its cells

The answer is option(B).DNA is the genetic material in animals.

foreign DNA is introduced in transgenic animals

b) is the right answer a transgenic animal has foreign DNA in all its cells

A transgenic animal is one whose genome has been altered by the transfer of a gene or genes from another species or breed. so final answer will be option (b)

answer b is correct that is dna

Foreign DNA in all its cells

c option both(a) and(b) hi hoga

the option (B) is the correct answer because for conversion of normal animal into transgenic animal the foriegn DNA is inserted into the host cell and it contains the transgene to make the animal transgenic.

b is the correct answers

foreign rna and dna in all its cells. c answer

option b is correct because transgenic animals are those whose genome has been altered by the foreign genome and animals have dna as their genome.

answer of this question is A

correct answer is D। none of these

B is the right answer because a transgenic animal is a result of transformation of DNA

C) A ans B are correct answer

Right option is (B) foreign DNA in all its cell.

answer is (b) foreign DNA in all its cells

A transgenic animals has foreign DNA in all its cells. correct option is (B)

B foreign DNA in all its cells

(B) foreign DNA in all its cells.

transgenic Animals is foreign DNA in all its cells

b. foreign DNA in all its cells

Option B is correct options

option b foreign dna in all its cells

b. in transgenic animals DNA in all its cell

B. foregin DNA in all its cell

b is the correct answer b/c ony dna

डीएनए हमारे शरीर का वह अंग है जिसके द्वारा हमें किसी व्यक्ति की पहचान करने में अहम भूमिका निभाता है

foreign DNA in all its cells option c is right answer

(b) AuxinThat's the answer

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Auxin

Auxin moves to the darker side of the plant, causing the cells there to grow larger than corresponding cells on the lighter side of the plant. This produces a curving of the plant stem tip toward the light, a plant movement known as phototropism. Auxin also plays a role in maintainingapicaldominance.

auxin is the right answer to

auxin is the right answer

option b is the right answer

option b is the right answer

auxin is the right answer

auxin is the right answer.

auxin is the right answer....

Auxin is the best answer

ur correct answer is b-Auxin

option A is write answer

option b is a correct answer

Correct answer is auxin.....

In this there are two answer from mine a) cytokininb) auxin

auxins has the best effect

gibberellin c position is correct

answer is auxin which regulates positive growth of apical

He reveals that there areseven differenttraits:

Peashape (round or wrinkled)

Peacolor (green or yellow)

Pod shape (constricted or inflated)

Pod color (green or yellow)

Flower color (purple or white)

Plant size (tall or dwarf)

Position of flowers (axial or terminal)

Auxinhelps in cell enlargement by increasing the plasticity of the cell wall.Auxinhelps in promoting the growth of the plant's tissue.Auxinis responsible for phototropism and geotropism.

1)deoxyribonucleic acid, desoxyribonucleic acid, DNA(noun) (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information.

Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the development and function of living things. All known cellular life and some viruses contain DNA. The main role of DNA in thecellis the long-termstorageof information.

ans is optiond because abscisic acid inhibit the growth

AUXIN IS THE RIGHT ANSWER

Somatostatininhibits growth hormone release in response to GHRH and to other stimulatory factors such aslowblood glucose concentration. Ghrelin is a peptide hormone secreted from the stomach. Ghrelin binds to receptors on somatotrophs and potently stimulates secretion of growth hormone.

(d ) of these is the harmone inhabit the growth

Auxin inhibits growth in Plants

it's option (D)because Abscisic acid is one example of a harmone which inhibits growth in plants

option D. none of these inhibit growth

D. Abscissic acid

Wiltingis the loss of rigidity of non-woody parts ofplants. This occurs when the turgor pressure in non-lignifiedplantcells falls towards zero, as a result of diminished water in the cells. The rate of loss of water from theplantis greater than the absorption of water in theplant.

abscissic acid...........

3x/4 -4/3x = 0

=> 3x/4 = 4/3x=> 3x*3x = 4*4 => 9x² = 16=> x² = 16/9=> x = ±4/3

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When a plant senses a directional light stimulus it redistribute its auxin molecules to the side that is further away from the light. As a consequence, the plant cells that are further away from the light experience a greater auxin concentration and grow faster, causing the shoot to bend towards the light.

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Cockroaches breathethrough a system of tubes attached to their spiracles. Spiracles are small valves along acockroach'sbody that allows air into the trachea, much like gillsdofor a fish. This system of tubes is called the tracheae; thuscockroachesare not dependent upon a windpipe and mouth tobreathe

2)Cockroaches do not have lungs like humans and other mammals do. Cockroaches breathe through a system of tubes attached to their spiracles. Spiracles are small valves along a cockroach’s body that allows air into the trachea, much like gills do for a fish. This system of tubes is called the tracheae; thus cockroaches are not dependent upon a windpipe and mouth to breathe. The valves open to dispense when Co2 levels raise to a high enough level and allow for O2 to be let in. The tracheal system then brings the oxygen directly to the cells instead of filtering through lungs like we as humans do. This is why a cockroach can in fact breathe without its head.

Ans :- In humans, melanin is the primary determinant of skin color. It is alsofoundin hair, thepigmented tissueunderlying the iris of the eye, and the stria vascularis of the inner ear. The melanin in the skin is produced by melanocytes, which arefound in the basal layer of the epidermis.

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At the end of the respiratory tree, sitsballoon likeair sacs known as the alveoli (Also known aspulmonaryalveolus).

Structureof the alveoli: The bronchioles branch out in thelungto form theseballoon likeair sacs.

Functions of the alveoli:

The main function of the alveoli is exchange of oxygen and carbon dioxide to and from the blood stream.

The oxygen is taken into the blood stream from the alveoli while carbon (iv) oxide is taken from the blood stream into the alveoli.

The alveoli then, through the help of the action of respiratory muscles, expels the CO₂ gas from the lungs.

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When sunlight comes from the above, the auxin hormone present at the tip of the stem spreads uniformly and it grows equally but when the sunlight falls only at one side of the stem, the hormone collects on the other side and the stem bends. The root has no effect of sunlight.