1. What type of sleep is restorative?





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MCQ->Study the given information carefully and answer the given question. Following are the observations of an experiment on 'sleep and memory' conducted on 18 healthy young adults (ages 18 to 25) and 18 healthy older adults (ages 61 to 81). A. The recall after 8 hours of sleep in younger adults was 65% more than that in the older adults. B. Night-sleep had higher negative impact on all of the participants as compared to that of daysleep of equal duration. C. If a given set' of words is memorised immediately before going to sleep, its recall after waking up was found to be better in younger adults than in the older adults. Which of the following can be concluded from the given findings of the research ? I. As per the experiment, there is some correlation between sleep and memory. II. The part of brain involved in memory is more active during the day as compared to that during the night. III. A sleep of more than 8 hours can improve the memory in older adults. IV. Memorising something immediately after waking up from an 8-hour long sleep will yield better results than memorising before sleep.....
MCQ-> A passage is given with 5 questions following it. Read the passage carefully and choose the best answer to each question out of the four alternatives.Prebiotics are the lesser-known gut-health promoters which serve as food for good bacteria inside the gut. "We found that dietary prebiotics can improve non-REM (random eye movement) sleep, as well as REM sleep after a stressful event," said Robert Thompson, a PhD researcher at University of Colorado Boulder in the U.S. Prebiotics are dietary fibres found naturally in foods like artichokes, raw garlic, leeks and onions.When beneficial bacteria digest prebiotic fibre, they not only multiply, improving overall gut health, but they also release metabolic by-products. Researchers fed three-week-old male rats a diet of either standard chow or chow that included prebiotics. They then monitored the rats' body temperature, gut bacteria and sleep-wake cycles — using electroencephalogram (EEG), or brain activity testing over time. Findings revealed that the rats on the prebiotic diet spent more time in non-rapid-eye-movement (NREM) sleep, which is restful and restorative, than those on the non-prebiotic diet.What are prebiotics?
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MCQ-> Read the given passage carefully and select the best answer to each question out of the four given alternatives.Dreams are both internal and external. Since the ego or the director is absent during sleep the neural pathways have a run of their own. Thus the day long experiences or the existing memories are the driving force for the internal dreams. However when there is tremendous thinking activity or Sanyam on a particular thought during waking time, it leads sometimes to solution dreams. Various great inventions and discoveries of the world have come through such dreaming process. Why we do not remember dreams has been researched by lots of brain scientists and there are many reasons - part of it is to do with creating long term memory. Nevertheless it is the dreams that we remember that make life interesting. There are many theories of dreams but we still do not know why we dream and why most of the time we have random and strange dreams. A possible answer may lie in how synapses behave during sleep. The more we dream during the night the less restful is the sleep. A really restful sleep is deep sleep without dreams. This helps in the flushing out of the toxic material from major part of the brain. Besides removing the toxins from the brain the increase of synaptic cleft may also help in explaining the dreaming process.What are dreams?
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MCQ->Five sentences related to a topic are given below. Four of them can be put together to form a meaningful and coherent short paragraph. Identify the odd one out. Choose its number as your answer and key the number in:1. Our smartphones can now track our diets, our biological cycles, even our digestive systems and sleep-patterns.2. Researchers have even coined a new term, “orthosomnia”, to describe the insomnia brought on by paying too much attention to smartphones and sleep-tracking apps.3. Sleep, nature’s soft nurse, is a blissful, untroubled state all too easily disturbed by earthly worries or a guilty conscience.4. The existence of a market for such apps is unsurprising: shift work, a long-hours culture and blue light from screens have conspired to rob many of us of sufficient rest.5. A new threat to a good night’s rest has emerged - smart-phones, with sleep-tracking apps.....
MCQ-> Answer questions on the basis of information given in the following case. Bright Engineering College (BEC) has listed 20 elective courses for the next term and students have to choose any 7 of them. Simran, a student of BEC, notices that there are three categories of electives: Job - oriented (J), Quantitative - oriented (Q) and Grade - oriented (G). Among these 20 electives, some electives are both Job and Grade - oriented but are not Quantitative - oriented (JG type). QJ type electives are both job and Quantitative - oriented but are not Grade - oriented and QG type electives are both Quantitative and Grade - oriented but are not Job - oriented. Simran also notes that the total number of QJ type electives is 2 less than QG type electives. Similarly, the total number of QG type electives is 2 less than JG type and there is only 1 common elective (JQG) across three categories. Furthermore, the number of only Quantitative - oriented electives is same as only Job - oriented electives, but less than the number of only Grade - oriented electives. Each elective has at least one registration and there is at least one elective in each category, or combinations of categories.On her way back Simran met her friend Raj and shared the above information. Raj is preparing for XAT and is only interested in Grade - oriented (G) electives. He wanted to know the number of G - type electives being offered. Simran replied, “You have all the information. Calculate the number of G - type electives yourself. It would help your XAT preparation”. Raj calculates correctly and says that there can be _______ possible answers. Which of the following options would b est fit the blank above?
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