Excessive richness of nutrients in a lake or other body of water is called ____

1. Excessive richness of nutrients in a lake or other body of water is called _____ .

Write Comment

Comments

Tags

Show Similar Question And Answers

QA->About 95 % of the absorption of nutrients in the human body occurs at ............?....

QA->About 95% of the absorpation of nutrients in the huamn body occurs at?....

QA->Excessive stimulus for alcohol consumption is called?....

QA->An excessive comedy writing is called?....

QA->A program designed to prevent, search for, detect and remove s/w viruses and other malicious s/w is called _____?....

MCQ-> In the following passage some of the words have been left out. Read the passage carefully and choose the correct answer to each question out of the four alternative and fill in the blanksA though we can _____(I)
_____ the _____(II)_____ bodies of our solar system _____(III)_____ a telescope, it is only _____(IV)_____ who can _____(V)_____ the depths of outer space. It is reported that they have seen _____(VI)_____ galaxies, stars taking _____(VII)_____ and _____(VIII)_____ black holes’. They say that the deeper they look _____(IX)_____ the universe, the more they know _____(X)_____ the universe originated.(I)
....

MCQ->Excessive richness of nutrients in a lake or other body of water is called _____ .....

MCQ-> Read the following passage carefully and answer the questions given below it. Certain words are printed in bold to help you to locate them while answering some of the questions. Once upon a time there lived a queen in the city of Benaras. Her name was Khema and she was the wife of King Bahuputtaka:One night, the Queen had a dream of a beautiful golden goose that spoke with great wisdom, almost as if he was a sage: She told her husband that she desperately wanted to see a bird just like the one in her dream. So the King aksed his ministers to find out all that they could about a bird such as this. He was told that such a bird did exist but was extremely rare and difficult to find: They advised him to build a beautiful lake aon the outskirts of Benaras so that he may attract such rare and lovely creatures to reside there: In this way the queen might have her wish. Towards the norh, on Mount Cittakuta, there lived about ninety thousand wild geese headed by a beautiful golden goose called King Dhatarattha He got to hear of this exquisite lake surrounded by water lilies and lotuses floating on the surface: The kKing had invited all the birds to come and live on it, promising that one of them would ever be harmed: Corn was acattered on a daily basis in order to attract the birds. So a couple of geese went up to their King, the golden goose and told him that they were quite tired of living up on the mountains and would like to see this wonderful lake where they had been promised food and protection. The king agreed to their request and took the floc down south towards Benaras. Meanwhile, at the lake ing Bahuputtaka had placed hunters all around in order to capture any golden goose that happened to pass by. So the next morning when the headhunter saw this flock of geese approaching he was very excited to see their golden leader. He immediatey went about setting up a snare amongst the water lilies and lotuses, as he knew that the leader would definitely be the first to alight. The whole flock came flying down in one mighty seoop and as expected it was the King’s foot that touched the water first. He was esnsnared and could not escape: Seeing this, the other geese flew into a panic: But none had the courage to try to free their king and so flew back to Mount Cittacuta for safety. All except one: He was the chief captain, Sumukha:King Dhatarattha entreated him to fly to safety too, as he would surely be captured if he stayed by his sid: But Sumukha replied that he would never desert his master in the face of danger and swould either try to save him or die by his side: At this point the hunter approached and as Sumukha saw him he decided to appeal to his compassion. The hunter asked the golden goose how come he had not noticed the trap that was set. The golden goose replied that when one’s time was up it was no use to struggle against what was fated and one must just accept it. The huntsman was very impressed with his grace and wisdom. He then turned to Sumukha and asked why he had not fled with the other birds even though he was free to do so. Sumukha answered that the golden goose was his King, best friend and master and that he could never desert him even at the cost of his own life: Hearing this, the hunter realised that these were a couple of rare birds of great nobility. He did not much care for his own King’s reward and decided to do the right thing and set them free: He told Sumukha that as he was ready to die for his ing he would set them both free to fly wherever they wish.Why were the geese keen on visiting the lake in Benaras?
....

MCQ-> Read the following passage carefully and answer the question given below it, certain words are printed in the bold to help you to locate them while answering some of the questions.Once upon a time there lived a queen in the city of Benaras. Her name was Khema and she was the wife of king Bahuputtaka . One night, the Queen had a dream of a beautiful golden goose that spoke with great wisdom, almost as if he was a sage. She told her husband that she desperately wanted to see a bird just like the one in her dream. So the king asked his minister to find out all that they could about a bird such as this. He was told that such a bird did exist but was extremely rare and difficult to find. They advised him to build a beautiful lake on the outskirts of Benaras so that he may attract such rare and lovely creatures to reside there. In this way the queen might have her wish. Towards the north, on Mount Cittakuta, there lived about ninety thousand wild geese headed by a beautiful golden goose called king Dhatarattha. He got to hear of this exquisite lake surrounded by water lilies and lotuses floating on the surface. The king had invited all the birds to come and live on it, promising that none of them would ever be harmed. Corn was scattered on a daily basis in order to attract the birds. So a couple of geese went up to their king, the golden goose and told him that they were quite tired of living up on the mountains and would like to see this wonderful lake where they had been promised food and protection. The king agreed to their request and took the flock down south towards Benaras Meanwhile, at the lake king Bahuputtaka had placed hunters all around in order to capture any golden goose that happened to pass by. So the next morning when the headhunters saw this flock of geese approaching he was very excited to see their golden leader. He immediately went about setting up snare amongst the water lilies and lotuses, as he knew that the leader would definitely be the first to alight . The whole flock came flying down in one mighty swoop and as expected it was the king's foot that touched the water first. He was ensnared and could not escape, seeing this the other geese flew into a panic. But none had the courage to try to free their king and so flew back to Mount Cittacuta for safety. All except one. He was the chief captain, Sumukha replied that he would never desert his master in the face of danger and would either try to save him or die by his side. At this point the hunter approached and as Sumukha saw him he decided to appeal to his compassion. The hunter asked the golden goose how come he had not noticed the trap that was set. The golden goose replied that when one's time was up it was no use to struggle against what was fated and one must just accept it. The huntsman was very impressed with his grace and wisdom He then turned to Sumukha and asked why he had not fled with other birds even though he was free to do. Sumukha answered that the golden goose was his king best friend and master and that he could never desert him even at the cost of his own life. Hearing this, the hunter realised that these were a couple of rare birds of great nobility. He did not much care for his own king's reward and decided to do the right thing and set them free. He told Sumukha that as he was ready to die for his king he would set them both free to fly wherever they wish.Why were the geese keen on visiting the lake in Benaras ?
....

MCQ-> Cells are the ultimate multi-taskers: they can switch on genes and carry out their orders, talk to each other, divide in two, and much more, all at the same time. But they couldn’t do any of these tricks without a power source to generate movement. The inside of a cell bustles with more traffic than Delhi roads, and, like all vehicles, the cell’s moving parts need engines. Physicists and biologists have looked ‘under the hood’ of the cell and laid out the nuts and bolts of molecular engines.The ability of such engines to convert chemical energy into motion is the envy nanotechnology researchers looking for ways to power molecule-sized devices. Medical researchers also want to understand how these engines work. Because these molecules are essential for cell division, scientists hope to shut down the rampant growth of cancer cells by deactivating certain motors. Improving motor-driven transport in nerve cells may also be helpful for treating diseases such as Alzheimer’s, Parkinson’s or ALS, also known as Lou Gehrig’s disease.We wouldn’t make it far in life without motor proteins. Our muscles wouldn’t contract. We couldn’t grow, because the growth process requires cells to duplicate their machinery and pull the copies apart. And our genes would be silent without the services of messenger RNA, which carries genetic instructions over to the cell’s protein-making factories. The movements that make these cellular activities possible occur along a complex network of threadlike fibers, or polymers, along which bundles of molecules travel like trams. The engines that power the cell’s freight are three families of proteins, called myosin, kinesin and dynein. For fuel, these proteins burn molecules of ATP, which cells make when they break down the carbohydrates and fats from the foods we eat. The energy from burning ATP causes changes in the proteins’ shape that allow them to heave themselves along the polymer track. The results are impressive: In one second, these molecules can travel between 50 and 100 times their own diameter. If a car with a five-foot-wide engine were as efficient, it would travel 170 to 340 kilometres per hour.Ronald Vale, a researcher at the Howard Hughes Medical Institute and the University of California at San Francisco, and Ronald Milligan of the Scripps Research Institute have realized a long-awaited goal by reconstructing the process by which myosin and kinesin move, almost down to the atom. The dynein motor, on the other hand, is still poorly understood. Myosin molecules, best known for their role in muscle contraction, form chains that lie between filaments of another protein called actin. Each myosin molecule has a tiny head that pokes out from the chain like oars from a canoe. Just as rowers propel their boat by stroking their oars through the water, the myosin molecules stick their heads into the actin and hoist themselves forward along the filament. While myosin moves along in short strokes, its cousin kinesin walks steadily along a different type of filament called a microtubule. Instead of using a projecting head as a lever, kinesin walks on two ‘legs’. Based on these differences, researchers used to think that myosin and kinesin were virtually unrelated. But newly discovered similarities in the motors’ ATP-processing machinery now suggest that they share a common ancestor — molecule. At this point, scientists can only speculate as to what type of primitive cell-like structure this ancestor occupied as it learned to burn ATP and use the energy to change shape. “We’ll never really know, because we can’t dig up the remains of ancient proteins, but that was probably a big evolutionary leap,” says Vale.On a slightly larger scale, loner cells like sperm or infectious bacteria are prime movers that resolutely push their way through to other cells. As L. Mahadevan and Paul Matsudaira of the Massachusetts Institute of Technology explain, the engines in this case are springs or ratchets that are clusters of molecules, rather than single proteins like myosin and kinesin. Researchers don’t yet fully understand these engines’ fueling process or the details of how they move, but the result is a force to be reckoned with. For example, one such engine is a spring-like stalk connecting a single-celled organism called a vorticellid to the leaf fragment it calls home. When exposed to calcium, the spring contracts, yanking the vorticellid down at speeds approaching three inches (eight centimetres) per second.Springs like this are coiled bundles of filaments that expand or contract in response to chemical cues. A wave of positively charged calcium ions, for example, neutralizes the negative charges that keep the filaments extended. Some sperm use spring-like engines made of actin filaments to shoot out a barb that penetrates the layers that surround an egg. And certain viruses use a similar apparatus to shoot their DNA into the host’s cell. Ratchets are also useful for moving whole cells, including some other sperm and pathogens. These engines are filaments that simply grow at one end, attracting chemical building blocks from nearby. Because the other end is anchored in place, the growing end pushes against any barrier that gets in its way.Both springs and ratchets are made up of small units that each move just slightly, but collectively produce a powerful movement. Ultimately, Mahadevan and Matsudaira hope to better understand just how these particles create an effect that seems to be so much more than the sum of its parts. Might such an understanding provide inspiration for ways to power artificial nano-sized devices in the future? “The short answer is absolutely,” says Mahadevan. “Biology has had a lot more time to evolve enormous richness in design for different organisms. Hopefully, studying these structures will not only improve our understanding of the biological world, it will also enable us to copy them, take apart their components and recreate them for other purpose.”According to the author, research on the power source of movement in cells can contribute to
....