ANSWERS Cambridge IGCSE® Biology Practice Book Answers 1 Characteristics of living things 1 Characteristic respiration an increase in size‚ mass and complexity of an organism excretion producing offspring‚ which prevents extinction of the species sensitivity this involves feeding – obtaining nutrients for growth‚ energy and maintaining health reproduction in response to changes‚ e.g. presence of a predator‚ to find food or a mate growth the ability
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Introduction: Biology is the study of life‚ what life needs to survive‚ what makes life possible‚ how life evolves and changes‚ and how life-forms interact with one another. Characteristics of Life Living things include both the visible world of animals and plants‚ as well as the invisible world of bacteria. On a basic level‚ we can say that life is ordered. Organisms have an enormously complex organization. We’re all familiar with the intricate systems of the basic unit of life‚ the cell
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Biology Assessment: Influenza Structure: Viruses are non-cellular obligate intracellular parasites‚ requiring a living host cell in order to reproduce. A developed viral particle (virion) lacks the metabolic machinery of cells‚ containing just a single type of nucleic acid (DNA or RNA) encased in a protein coat or capsid. Viruses can be distinguished by their structure and by the nature of their genetic material (single or double stranded DNA or RNA). Viruses that affect humans are more difficult
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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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non-agricultural use of the term "culture" re-appeared in modern Europe in the 17th century referring to the betterment or refinement of individuals‚ especially through education. During the 18th and 19th century it came to refer more frequently to the common reference points of whole peoples‚ and discussion of the term was often connected to national aspirations or ideals. Some scientists used the term "culture" to refer to a universal human capacity. In the 20th century‚ "culture" emerged as a central concept
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Preliminary Biology Assessment task 2013 A Local Ecosystem Mangrove Swamp Cassandra Mandelik Introduction: A mangrove is a tree‚ shrub‚ palm or ground fern‚ generally exceeding the height of one and a half metres. They normally grow above mean (average) sea level in intertidal zones of marine coastal environments as well as estuarine margins. A mangrove also refers to the tidal habitat comprising of such trees and shrubs. Australian mangrove systems are highly effecting by human presence and
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When the Creature takes refuge in a hovel next to the cottage‚ he is able to make observations of the family living inside. What he sees can be described as both ideal and real culture. The ideal culture aspects of which he observes are the family’s affection for each other and the language they speak. Before he can even understand the words they are saying‚ the Creature can see the interactions between the family members and learns how a family can be structured. Even though they appeared to be
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trajectories. One such new trajectory is the concern with national culture. Whereas traditional IB research has been concerned with economic/legal issues and organizational forms and structures‚ the importance of national culture – broadly defined as values‚ beliefs‚ norms‚ and behavioural patterns of a national group – has become increasingly important in the last two decades‚ largely as a result of the classic work of Hofstede (1980). National culture has been shown to impact on major business activities‚
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between an eukaryotic and prokaryotic cell? 7. What branch of biology creates models to make whole biological systems understandable? What do scientists do with these models? 8. In ____________ regulation the output of a process can slow or increase a process. If the process is slowed by the output it is called _________________________ regulation. 9. What branch of biology groups organism according to their characteristics?
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Biology IB Standard Level 2012-2014 Index Topic 1 Topic 2 Topic 3 Topic 4 Topic 5 Topic 6 Topic 7 Topic 8 Topic 9 Topic 10 Topic 11 Statistical analysis Cells The chemistry of life Genetics Ecology and evolution Human health and physiology Nucleic acids and proteins Cell respiration and photosynthesis Plant science Genetics Human health and physiology Topic
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