Biology What is cholesterol? Cholesterol‚ a waxy substance produced by the liver and found in certain foods‚ is needed to make vitamin D and some hormones‚ build cell walls‚ and create bile salts that help you digest fat. our liver produces about 1‚000 milligrams of cholesterol a day‚ enough cholesterol for the body to be ok without food with colesterol but it’s hard to avoid cholesterol entirely because so many foods contain it. Consequences o high cholesterol. Too much cholesterol in the
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What is the aim of the study? [1 mark] The aim of this study is to modify knowledge of genes and enzymes for carotenoid biosynthesis in plant and also put some light on the challenges that are currently being faced by plant developmental biology and biotechnology. What is the author’s hypothesis? Was it supported or refuted by their research? [2 marks] The author’s hypothesis was that‚ “ Carotenoids protect photosynthetic organisms against potentially harmful photooxidative processes
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Cycles in Biology Cycles in biology play a fundamental role in the world that we live in. Cycles occur all around and inside of us in many different forms‚ from the Krebs to the Calvin cycle. There are large scale cycles happening and they are essential in regulating the nutrients and substances that are around us which without‚ life on earth could no function. One of the largest cycles that occurs all around us is in everyday life is the carbon cycle. The current atmospheric
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Unit Biology B1a (Human Biology) Biology Unit Biology B1a (Human Biology) Thursday 1 March 2012 For this paper you must have: a black ball-point pen an objective test answer sheet. You may use a calculator. F&H BLY1AP Morning Session Time allowed 30 minutes Instructions Fill in the boxes at the top of this page. Check that your name‚ candidate number and centre number are printed on the separate answer sheet. Check that the separate answer sheet has the title ‘Biology Unit
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Edusmart Study Centre Biology Notes Class 10 1. How are our eyes protected? • Eyes are situated in the eye-socket of the skull • Eyelids with eyelash protect from dust and other particles • Tears keep eyes wet ‚ washes away the dust particles and prevent infection • The conjunctiva covers the front portion of the eye except cornea 2. Which are the 3 layers of human eye? • Sclera –The outermost‚ strong layer‚ that gives shape. Its
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Chapter 01 A View of Life 1. Organisms belonging to the same _____ would be the most closely related. A. kingdom B. phylum C. family D. class E. order 2. A university biology department wishes to hire a scientist to work on the relationships among the wolves‚ moose‚ trees and physical features on an island. If you were charged with writing the job description‚ you should title the position A. population geneticist. B. molecular biologist. C. community ecologist. D. organismal physiologist
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born in Derby‚ England 1855 - he published his second book Principles of Psychology which was about exploring a physiological basis for psychology. 1864 - know for coining the expression "survival of the fittest" which he did in the Principles of biology. 1862 - First Principles of a New system of Philosophy. 1902 - Spencer was nominated for the Nobel Prize for literature 12/8/1903 - died Ronald Fisher 2/17/1890 - Born in East Finchley‚ London‚ England 1925 - published a book called ’Statistical
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Biology revision -keeping healthy Diet and Exercise What should a balanced diet include? Carbohydrates‚proteins‚fats‚vitamins‚minerals‚fibre‚water. Don’t get enough of these? Become malnourished. How much energy do we need? The energy you need depends on various things : 1. Gender- Males need more energy then females‚ Bigger size‚ have a bigger ratio of muscle to fat than women. 2. Age- Young people are still growing‚ they are reproducing and are more active (exercise) than old people
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Exam 1 Study Guide 1) What is biology? the scientific study of life 2) Which of the following is not a property of life? A) Populations of organisms are unable to change over time. B) Living things exhibit complex but ordered organization. C) Organisms respond to environmental stimuli. D) Organisms take in energy and use it to perform all of life’s activities. E) Organisms reproduce their own kind. 3) What are the two main processes that ecosystems depend upon? nutrient
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Biology Reviewer I. Definition of the cell -Cell is the basic unit/structure of life II. History of cell A. (1665) Robert Hooke- discovered the cell and he established the drawing of a cork cell B. (1674) Anton van Leeuwenhoek- observed red blood cell and myriad in a single cell organism in Pond water -discovered
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