9.2 - Maintaining a Balance: 1. Most organisms are active within a limited temperature range: * Identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity in substrates: * Role of enzymes in metabolism: * Metabolism refers to all the chemical reactions occurring in organisms * Enzymes are biological catalysts which increase the rate of chemical reactions * Without enzymes‚ metabolism
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enzyme-catalyzed reaction is called a substrate. The area of the enzyme that binds to the substrate is called the active site - where the action takes place. * Cofactors and coenzymes are small molecules or ions that help enzymes to act. HSC Biology Notes – Hugh Phillips Maintaining a Balance 1.Most organisms are active in a limited temperature range: Identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on substrates:
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is Tommy the dog. � �He seemed to take life‚ the world‚ his two-legged mates‚ and his own instinct as a huge joke.� � Tommy is described as having �a red‚ idiotic slobbering grin of appreciation of his own silliness.� He is fun loving and a great retriever. The trio loves him and he is loyal to them too. � When chasing townsfolk he
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HSC Biology 9.4 The Search for Better Health 9.4-6 You have been looking at the different types of diseases that affect the human body and the natural defence mechanisms that maintain health. In this last part of the module you will look at how increased understanding has led to the development of a wide range of strategies to prevent and control disease. In this part you will have the opportunity to: • discuss the role of quarantine in preventing the spread of disease and plants and animals
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assist students wishing to excel on the SAT and in college courses. According to the College Board’s website‚ AP Biology courses are designed to be the equivalent of a college introductory course‚ usually taken during a biology major’s first year of college. Students who choose to take AP Biology may be allowed to skip over introductory biology courses and enroll in courses in which biology is a prerequisite. Because universities grant college credit for this course‚ they require that the textbooks
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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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HSC BIOLOGY TOPIC 2: BLUEPRINT OF LIFE HSC BIOLOGY TOPIC 2: BLUEPRINT OF LIFE 1) Evidence of evolution suggests that the mechanisms of inheritance‚ accompanied by selection‚ allow change over many generations. 1.1.1 Outline the impact of evolution of plants and animals of: * Changes in physical conditions in the environment * Changes in chemical conditions in the environment * Competition for resources
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Biology Assessment Task - Communication Describe cataracts and some of the technologies that can be used to prevent blindness from cataracts. Cataracts: A cataract is a clouding of the normally clear and transparent lens of the eye which results in decrease of vision. It is not a tumour‚ a new growth of skin or tissue over the eye‚ but a fogging of the lens itself. There are three types of cataract. They are:- a nuclear cataract- a cortical cataract- a subscapular cataract A nuclear cataract
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Biology Notes 1.02 Sometimes a practice or belief claims to be science but does not follow the scientific method or cannot be proven reliable through experimentation. These practices are examples of pseudoscience‚ which literally means "fake science." Charms‚ astrology = stars‚ and phrenology= reading the bump on skull 1.03 * In the mid 1600s in the Netherlands‚ the scientist Antonie van Leeuwenhoek developed the first known microscope using a single magnifying lens. He was the first person
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increasing pH? Which structures‚ if found in a cell‚ would provide the best evidence that the cell is eukaryotic? Where in the cell do the following occur? Calvin cycle‚ glycolysis‚ Kreb’s cycle‚ electron transport chain. Students in a biology class tested the effects of antibiotics on the growth of bacteria. They cultured bacteria in four glass Petri dishes and then added different amounts of antibiotic to each dish. After the experiment is completed‚ what should be done with the Petri
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