Biology Exam Quotes

We can now give you a biological reason why cramming doesn’t work,” says Dr. Tully. The best way to prepare for a final exam is to mentally review the material periodically during the day, until the material becomes part of your long-term memory. This may also explain why emotionally charged memories are so vivid and can last for decades. The CREB repressor gene is like a filter, cleaning out useless information. But if a memory is associated with a strong emotion, it can either remove the CREB repressor gene or increase levels of the CREB activator gene.

She’d spent so much of her life seeing the world as black-and-white, separating right from wrong as confidently as she sorted plant cells from animal cells during a biology exam. But the past year had been a brutal crash course in moral relativity. Clarke

It may seem paradoxical to claim that stress, a physiological mechanism vital to life, is a cause of illness. To resolve this apparent contradiction, we must differentiate between acute stress and chronic stress. Acute stress is the immediate, short-term body response to threat. Chronic stress is activation of the stress mechanisms over long periods of time when a person is exposed to stressors that cannot be escaped either because she does not recognize them or because she has no control over them. Discharges of nervous system, hormonal output and immune changes constitute the flight-or-fight reactions that help us survive immediate danger. These biological responses are adaptive in the emergencies for which nature designed them. But the same stress responses, triggered chronically and without resolution, produce harm and even permanent damage. Chronically high cortisol levels destroy tissue. Chronically elevated adrenalin levels raise the blood pressure and damage the heart. There is extensive documentation of the inhibiting effect of chronic stress on the immune system. In one study, the activity of immune cells called natural killer (NK) cells were compared in two groups: spousal caregivers of people with Alzheimer’s disease, and age- and health-matched controls. NK cells are front-line troops in the fight against infections and against cancer, having the capacity to attack invading micro-organisms and to destroy cells with malignant mutations. The NK cell functioning of the caregivers was significantly suppressed, even in those whose spouses had died as long as three years previously. The caregivers who reported lower levels of social support also showed the greatest depression in immune activity — just as the loneliest medical students had the most impaired immune systems under the stress of examinations. Another study of caregivers assessed the efficacy of immunization against influenza. In this study 80 per cent among the non-stressed control group developed immunity against the virus, but only 20 per cent of the Alzheimer caregivers were able to do so. The stress of unremitting caregiving inhibited the immune system and left people susceptible to influenza. Research has also shown stress-related delays in tissue repair. The wounds of Alzheimer caregivers took an average of nine days longer to heal than those of controls. Higher levels of stress cause higher cortisol output via the HPA axis, and cortisol inhibits the activity of the inflammatory cells involved in wound healing. Dental students had a wound deliberately inflicted on their hard palates while they were facing immunology exams and again during vacation. In all of them the wound healed more quickly in the summer. Under stress, their white blood cells produced less of a substance essential to healing. The oft-observed relationship between stress, impaired immunity and illness has given rise to the concept of “diseases of adaptation,” a phrase of Hans Selye’s. The flight-or-fight response, it is argued, was indispensable in an era when early human beings had to confront a natural world of predators and other dangers. In civilized society, however, the flight-fight reaction is triggered in situations where it is neither necessary nor helpful, since we no longer face the same mortal threats to existence. The body’s physiological stress mechanisms are often triggered inappropriately, leading to disease. There is another way to look at it. The flight-or-fight alarm reaction exists today for the same purpose evolution originally assigned to it: to enable us to survive. What has happened is that we have lost touch with the gut feelings designed to be our warning system. The body mounts a stress response, but the mind is unaware of the threat. We keep ourselves in physiologically stressful situations, with only a dim awareness of distress or no awareness at all.

The modern educational system provides numerous other examples of reality bowing down to written records. When measuring the width of my desk, the yardstick I am using matters little. My desk remains the same width regardless of whether I say it is 200 centimetres or 78.74 inches. However, when bureaucracies measure people, the yardsticks they choose make all the difference. When schools began assessing people according to precise marks, the lives of millions of students and teachers changed dramatically. Marks are a relatively new invention. Hunter-gatherers were never marked for their achievements, and even thousands of years after the Agricultural Revolution, few educational establishments used precise marks. A medieval apprentice cobbler did not receive at the end of the year a piece of paper saying he has got an A on shoelaces but a C minus on buckles. An undergraduate in Shakespeare’s day left Oxford with one of only two possible results – with a degree, or without one. Nobody thought of giving one student a final mark of 74 and another student 88.6 Credit 1.24 24. A European map of Africa from the mid-nineteenth century. The Europeans knew very little about the African interior, which did not prevent them from dividing the continent and drawing its borders. Only the mass educational systems of the industrial age began using precise marks on a regular basis. Since both factories and government ministries became accustomed to thinking in the language of numbers, schools followed suit. They started to gauge the worth of each student according to his or her average mark, whereas the worth of each teacher and principal was judged according to the school’s overall average. Once bureaucrats adopted this yardstick, reality was transformed. Originally, schools were supposed to focus on enlightening and educating students, and marks were merely a means of measuring success. But naturally enough, schools soon began focusing on getting high marks. As every child, teacher and inspector knows, the skills required to get high marks in an exam are not the same as a true understanding of literature, biology or mathematics. Every child, teacher and inspector also knows that when forced to choose between the two, most schools will go for the marks.

Scientists have found that there are two important genes, the CREB activator (which stimulates the formation of new connections between neurons) and the CREB repressor (which suppresses the formation of new memories). Dr. Jerry Yin and Timothy Tully of Cold Spring Harbor have been doing interesting experiments with fruit flies. Normally it takes ten trials for them to learn a certain task (e.g., detecting an odor, avoiding a shock). Fruit flies with an extra CREB repressor gene could not form lasting memories at all, but the real surprise came when they tested fruit flies with an extra CREB activator gene. They learned the task in just one session. “This implies these flies have a photographic memory,” says Dr. Tully. He said they are just like students “who could read a chapter of a book once, see it in their mind, and tell you that the answer is in paragraph three of page two seventy-four.” This effect is not just restricted to fruit flies. Dr. Alcino Silva, also at Cold Spring Harbor, has been experimenting with mice. He found that mice with a defect in their CREB activator gene were virtually incapable of forming long-term memories. They were amnesiac mice. But even these forgetful mice could learn a bit if they had short lessons with rest in between. Scientists theorize that we have a fixed amount of CREB activator in the brain that can limit the amount we can learn in any specific time. If we try to cram before a test, it means that we quickly exhaust the amount of CREB activators, and hence we cannot learn any more—at least until we take a break to replenish the CREB activators. “We can now give you a biological reason why cramming doesn’t work,” says Dr. Tully. The best way to prepare for a final exam is to mentally review the material periodically during the day, until the material becomes part of your long-term memory. This may also explain why emotionally charged memories are so vivid and can last for decades. The CREB repressor gene is like a filter, cleaning out useless information. But if a memory is associated with a strong emotion, it can either remove the CREB repressor gene or increase levels of the CREB activator gene. In the future, we can expect more breakthroughs in understanding the genetic basis of memory. Not just one but a sophisticated combination of genes is probably required to shape the enormous capabilities of the brain. These genes, in turn, have counterparts in the human genome, so it is a distinct possibility that we can also enhance our memory and mental skills genetically. However, don’t think that you will be able to get a brain boost anytime soon. Many hurdles still remain. First, it is not clear if these results apply to humans.

Swami Devi Dyal College Of Nursing Swami Devi Dyal College of Nursing was established in year 2006. The college is approved & recognized by Haryana Nursing Registration Council (HNRC), Indian Nursing Council (INC), New Delhi and is affiliated to Pt. B.D. Sharma University of Health Sciences, Rohtak. SWATCH BHARAT B.Sc Nursing Students of Swami Devi Dyal college of nursing organized awareness programme on SWATCH BHARAT along with Nursing Staff of General Hospital Sector -6 Panchkula Haryana. They delivered health education to patients and their relatives about the importance of cleanliness and proper disposal of refuse .Posters were displayed. Courses Offered Bachelor of Science Nursing (Co-education) Program Mode Regular Duration 4 Years No. of Seats 60 Eligibility 1) The applicant must have passed 10+2 exam of board of school education Haryana or any examination recognized as equivalent there to with Science (Physics, Chemistry, & Biology) and English (PCBE) with minimum 45% in aggregate marks (40% marks for the reserved category SC/ST). 2) Minimum Age limit: 17 years before 31st December of the admission session 2012. 3) Candidate must be medically fit and medical fitness certificate shall have to be produced at the time of admission. Fee Structure 60000/- Admission Procedure The admission to B. Sc Nursing Program will be made on the basis of the CET test conducted by Pt. B.D. Sharma University of Health Sciences, Rohtak. The management Quota seats (25% of the sanctioned intake including 15% seats for children/ward of NRI’s) for Nursing will be filled as per 1. CET-2012 merit ranking Conducted by Pt. B.D. Sharma University of Health Sciences, Rohtak. 2. Merit based on percentage of marks in 10+2 in Physics, Chemistry, Biology & English.

Clifford” is an important psychedelic researcher, group leader, and writer. He is currently writing a book of personal essays. Student days at the University of California at San Diego were a whirlwind blending of 1960s’ issues with the academic pressure necessary to enter postgraduate training of some sort. My personal choices were between psychology and medicine. My introduction to psychedelics had convinced me of their value. I was taking a biology course to prepare for medical school, and we were studying the development of the chick embryo. After the first meeting of the one-quarter-long course, I realized that in order to stay alert, a tiny dose of LSD could be useful. With that in mind, I licked a small, but very potent, tablet emblazoned with the peace sign before every class. This produced a barely noticeable brightening of colors and created a generalized fascination with the course and my professor, who was otherwise uninteresting to me. Unfortunately, when finals came around, my health disintegrated and I missed the final exam. The next day I called my professor and begged for mercy. She said, “No problem, come to my lab.” “When shall we schedule this?” She suggested immediately. With some dismay, I agreed that I would meet her within an hour. I reached into the freezer and licked the almost exhausted fragment of the tablet I had used for class. I decided that there was so little left I might as well swallow it all. At

As whites cease to be the mainstream, their interests become less important. In 2008, the College Board, the New York-based non profit that administers Advanced Placement (AP) tests, announced it was dropping AP courses and exams in Italian, Latin literature, and French literature. Blacks and Hispanics are not interested in those subjects, and they were the groups the College Board wanted to reach. In Berkeley, California, the governance council for the school district came up with a novel plan for bridging the racial achievement gap: eliminate all science labs, fire the five teachers who run them, and spend the money on “underperforming” students. The council explained that science labs were used mainly by white students, so they were a natural target for cuts. Many schools have slashed enriched programs for gifted students because so few blacks and Hispanics qualify for them. Evanston Township High School in Illinois prides itself on diversity and academic excellence but, like so many others, is dismayed that the two do not always go together. In 2010 it eliminated its elite freshman honors courses in English because hardly any blacks or Hispanics met the admission criteria. The honors biology course was scheduled for elimination the next year.

The animals are confident in their sensory awareness and their ability to respond to all provocations accordingly. This awareness allows them to avoid danger, and avoiding danger conserves energy. It is in their best interests to have as early a warning of trouble as possible, not only, obviously, to escape death and live to breed another day, but also to avoid the trauma of the fight-or-flight response, which triggers several biological reactions, all of them energy-intensive. Heart rate increases, adrenaline surges, stored energy is consumed, the body’s overall resistance suffers, and susceptibility to starvation and disease increases. And then either the fight or the flight is hard work. (I’ve chopped a lot of wood in my day. It’s hard work, but nothing compared with the drain of taking a final exam or meeting a production deadline. The mental energy these tasks require, and the anxiety they produce—the adrenaline and other hormonal surges—are even more debilitating for the body than sheer physical exercise.)

The only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle. 카톡☛ppt33☚ 〓 라인☛pxp32☚ 홈피는 친추로 연락주세요 Being the richest man in the cemetery doesn't matter to me ... Going to bed at night saying we've done something wonderful... that's what matters to me. 엠빅스판매,엠빅스파는곳,엠빅스가격,엠빅스구입방법,엠빅스구매방법,엠빅스지속시간,엠빅스효과,엠빅스판매사이트,엠빅스가격 I want to put a ding in the universe. 아무런 말없이 한번만 찾아주신다면 뒤로는 계속 단골될 그런 자신 있습니다.저희쪽 서비스가 아니라 제품에대해서 자신있다는겁니다 팔팔정,구구정,네노마정,프릴리지,비맥스,비그알엑스,엠빅스,비닉스,센트립 등 많은 제품 취급합니다 확실한 제품만 취급하는곳이라 언제든 연락주세요 비아그라지속시간,시알리스지속시간,비닉스지속시간,센트립지속시간,비아그라지속시간,시알리스지속시간,레비트라지속시간 Quality is more important than quantity. One home run is better than two doubles. Remembering that I'll be dead soon is the most important tool I've ever encountered to help me make the big choices in life. When I do well in the exam, I will show my paper to my parents, they are so happy to see me do well in the exam. I want to be happy all the time. But I have put so much pressure on myself. One day, my parents tell me that they don’t care how I do well in the exam, they just want me to be happy. I know I should relax myself and be happy. The physicist: 'Love is chemistry' Biologically, love is a powerful neurological condition like hunger or thirst, only more permanent. We talk about love being blind or unconditional, in the sense that we have no control over it. But then, that is not so surprising since love is basically chemistry. While lust is a temporary passionate sexual desire involving the increased release of chemicals such as testosterone and oestrogen, in true love, or attachment and bonding, the brain can release a whole set of chemicals: pheromones, dopamine, norepinephrine, serotonin, oxytocin and vasopressin. However, from an evolutionary perspective, love can be viewed as a survival tool – a mechanism we have evolved to promote long-term relationships, mutual defense and parental support of children and to promote feelings of safety and security.

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