species. From a young age‚ I have had an appreciation of the importance of science as well as a desire to understand it‚ especially biology. I have always found the human body particularly fascinating. The area of study that is of particular interest to me‚ is the study of cells‚ This brings me to the one career that I would absolutely love to learn more about‚ cell biology. A cell biologist is a scientist
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Biology – HSC Online Extract from Biology Stage 6 Syllabus (Amended October 2002) © Board of Studies‚ NSW 9.2 Maintaining a balance: 1. Temperature range Background: All organisms are adapted to a particular environment with its characteristic temperature range. The temperature range allows the organism’s enzymes to control its metabolism by operating at their optimum efficiency within this range. Some organisms are adapted to live at high temperatures (80 - 100oC) and these are called thermophiles
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Biology Notes: Threats to biodiversity in MA 1. Climate change: temp‚ sea levels‚ precipitation 2. Non climate threats such as habitat loss‚ habitat fragmentation‚ and invasive species and air and water pollution Fragmentation: often due to man (dams‚ roads‚ and general development) Elements of biodiversity: Species‚ ecosystems & landscapes Mammals from bats to bears Bats got the white nose fungus which caused the bats to die and the insect population flourished because the bats main job
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DNA is a tool of great use throughout the world. Especially when it comes to the field of forensic science‚ DNA is the most important tool of all. What is DNA? DNA‚ short for deoxyribonucleic acid‚ is a group of molecules that hereditary information in which guides development and functioning throughout the body. “DNA is to justice as a telescope is to the stars; not a lesson in biochemistry‚ not a display of the wonders of magnifying glass‚ but a way to see things as they really are.”(Barry Scheck
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Coimisiún na Scrúduithe Stáit Scrúduithe Stáit State Examinations Commission State Examinations Commission Leaving Certificate 2012 Certificate 2012 Marking Scheme Scheme Biology Design and Communication Graphics Higher Level Introduction The marking scheme is a guide to awarding marks to candidates‟ answers. It is a concise and summarised guide and is constructed in a way to minimise its word content. Examiners must conform to this scheme and may not allow marks for answering outside
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• The equilibrium law DYNAMIC EQUILIBRIUM forward A +8 reaction ""r=====~’~ reverse reaction Most chemical reactions do not go to completion. Once some products are formed the reverse reaction can take place to reform the reactants. In a closed system the concentrations of all the reactants and products will eventually become constant. Such a system is said to be in a state of dynamic equilibrium. The forward and reverse reactions continue to occur‚ but at equilibrium
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Organic Chemistry - Introduction 1 2812 Basic definitions for organic chemistry Scope Organic chemistry is a vast subject so it is easier to split it into small sections for study. This is usually done by studying compounds which behave in a similar way because they have a particular atom‚ or group of atoms‚ (FUNCTIONAL GROUP) in their structure. Catenation The ability to form bonds between atoms of the same element. Carbon catenates to form chains and rings‚ with single‚ double
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Learning about Cells. First thing I want to show you is two beautiful pictures of a Cell. Imagine all of this is in something so small we cannot see it with our naked eyes. About 10‚000 average-sized human cells can fit on the head of a pin. There are a few exceptions‚ but the average cell is very tiny. Here are a few beautiful examples of a cell structure to kind of give you an idea of its beauty‚ and how they fit together. Plasma Membrane (cell membrane) First we are going to learn about
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Biology is a natural science concerned with the study of life and living organisms‚ including their structure‚ function‚ growth‚ evolution‚ distribution‚ and taxonomy.[1] Modern biology is a vast and eclectic field‚ composed of many branches and subdisciplines. However‚ despite the broad scope of biology‚ there are certain general and unifying concepts within it which govern all study and research‚ consolidating it into single‚ coherent field. Biology generally recognizes the cell as the basic unit
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CHAPTER 23 Circulation Chapter Objectives Opening Essay Describe the adaptations of giraffes and humans to circulate blood against the pull of gravity. Circulatory Systems 23.1 23.1 23.2 Describe the general functions of a circulatory system. Compare the structures and functions of gastrovascular cavities‚ open circulatory systems‚ and closed circulatory systems. Compare the cardiovascular systems of a fish‚ an amphibian‚ a reptile‚ a bird‚ and a mammal. The Human Cardiovascular System
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