If a person covers the same distance by walking, by cycling and by running with speeds in the ratio 1: 9: 3 respectively, then the ratio of the ratios of their times and speeds of the three modes of travel is ?->(Show Answer!)

1. If a person covers the same distance by walking, by cycling and by running with speeds in the ratio 1: 9: 3 respectively, then the ratio of the ratios of their times and speeds of the three modes of travel is

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MCQ->If a person covers the same distance by walking, by cycling and by running with speeds in the ratio 1: 9: 3 respectively, then the ratio of the ratios of their times and speeds of the three modes of travel is....

MCQ-> Read the given passage carefully and select the best answer to each question out of the four given alternatives. Unfortunately, the reality hit me the next morning. I slept past the chirping of birds, but was woken up by loud voices crossing my window every now and then. When I went to the kitchen to make myself some tea, a couple of tourists were peeping in through the glass door. Day trippers! The old-world charm of this village, with only 305 residents, was drowned by the callousness of visitors who only seemed to care about their photos and getting drunk, almost running over the locals in their rental cars, never realizing that they were intruding into someone’s sleepy neighbourhood and life. My hosts assured me that the number of day trippers now was not nearly as bad as in the peak summer season, and joked about how the village residents, their homes and their kitchens must be curious, unfamiliar sights for tourists. If you’re on the same page, you’re probably thinking that an easy solution is that travel bloggers like me should never write about their “offbeat” finds. But as my social media followers often remind me, isn’t it part of my job to disclose the exact location of my stories and photos, so others can choose to experience my finds over ‘tourist traps’? I’ve dwelt on this dilemma for a long time. But walking on those cobblestoned streets in Istria (mostly at sunrise and late at night), it occurred to me that no, perhaps that isn’t the role a travel blogger is supposed to play. The way I see it now, my work as a travel blogger should inspire my readers to think of travel differently - to reconsider their travel choices, to seek local encounters, to carve out their own journey. It’s the reason I never have, and never will, give you a three day itinerary to “do” a destination. That’s not how I aspire for my readers to experience somewhere I’ve been and loved.What do you think author wants to imply by "I slept past the chirping of birds"?....

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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. 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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
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MCQ-> Study the following information carefully to answer the given question Ten persons from different companies viz Samsung, Bata, Microsoft, Google, Apple, HCL, ITC, Reliance, Airtel and Vodafone are sitting in two parallel rows containing five people each, in such a way that there is an equal distance between adjacent persons. In row 1- B, C, D, E and F are seated and all of them are facing south. In row-2 R, S, T, U and V are seated and all of them are facing north. Therefore, in the given seating arrangement, each member seated in a row faces another member of the other row. (All the information given above does not the order of seating as in give thefinal arrangement.) • There people sit between R and the person from Apple. The person from Reliance is an immediate neighbour of the one who faces the person from Apple. V sits to the immediate left of the one who faces the person from Reliance. • Only one person sits between V and T. The person from Bata sits second to the right of the one who faces T. F sits second to the left of the person from Google. The person from Google does not sit at an extreme end of the line. • Only two people sit between F and D. The person from Samsung faces an immediate neighbour of D. U is an immediate neighbour of the person from Microsoft. V is not from Microsoft. B sits second to the left of C. • The person from ITC is an immediate neighbour of the person from Vodafone. Neither V nor F is from ITC. The person from ITC faces the person from HCL.F is related to ITC in the same way as T is related to HCL, based on the given arrangement. To who amongst the following is D related to following the same pattern ?
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