REVISION NOTES FOR PRELIM BIOLOGY: [ A LOCAL ECOSYSTEM ] ~ Ecosystems: “any area that contains living organisms interacting with each other and their environment. In a balanced ecosystem‚ there is a flow of energy through it and recycling of some materials” Inputs and Outputs of Ecosystems include: - the energy flow through the ecosystem; energy from the sun flows one way through‚ with heat loss at each trophic level - the input and recycling of inorganic and organic material (matter) - the
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100 m. E) 1 m to 300 m. 5. Cellular foundations Page: 4 Difficulty: 2 Ans: B Which group of single-celled micro-organisms has many members found growing in extreme environments? A) bacteria. B) archaea. C) eukaryotes. D) heterotrophs. E) none of the above. 6. Cellular foundations Page: 5 Difficulty: 2 Ans: B The bacterium E. coli requires simple organic molecules for growth and energy—it is therefore a: F) chemoautotroph. G) chemoheterotroph. H) lithotroph.
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transmission Physiology of parasitic protozoa Parasitic protozoa Single-celled eukaryotic organisms Utilize flagella‚ cilia‚ or amoeboid movement for motility Some species – may exhibit more than one form of motility All pathogenic protozoa – heterotrophs Carbohydrates or Amino acids – major source of carbon and energy Some parasitic protozoa – utilize oxygen to generate energy through oxidative phosphorylation Many protozoan parasites – lack functional mitochondria; as a result‚ they exhibit a
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|Biology | |2013 Subject Outline | |Stage 1 and Stage 2 | contents INTRODUCTION 1 Purposes of the SACE 1 Subject Description 1 Capabilities 2 Literacy in Biology
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Answers to Conceptual Integrated Science End-of-Chapter Questions Chapter 1: About Science Answers to Chapter 1 Review Questions 1 The era of modern science in the 16th century was launched when Galileo Galilei revived the Copernican view of the heliocentric universe‚ using experiments to study nature’s behavior. 2 In Conceptual Integrated Science‚ we believe that focusing on math too early is a poor substitute forconcepts. 3 We mean that it must be capable of being proved wrong. 4 Nonscientific
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Ecosystem is a community of living organisms (plants‚ animals and microbes) in conjunction with the nonliving components of their environment (things like air‚ water and mineral soil)‚ interacting as a system. These components are regarded as linked together through nutrient cycles and energy flows. As ecosystems are defined by the network of interactions among organisms‚ and between organisms and their environment‚ they can come in any size but usually encompass specific‚ limited spaces (although
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Laurentia is plate that holds North America Surrounding continental mass is a large continental shelf which is a shallow part of ocean with phenomenal light penetration which means lots high primary productivity‚ which has a good base of photosynthetic autotrophs that are then fed off by other things. And its on equator‚ which is the ideal location because of the warmth. EVERYTHING IS PERFECT! There are no plants on land though. Its all rock. At cost line we see invertebrates and they will be fossilized
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AP bio final study Study online at quizlet.com/_6ovb5 1. 2 carbon atoms are fed into the citric acid cycle as a result of the oxidation of one molecule of pyruvate falling statoliths trigger gravitropism 2 9. acrosomal reaction 2. a botanist discovers a plant that lacks the ability to form starch grains in root cells‚ yet the roots still grow downward. This evidence refutes the long standing hypothesis that A human red blood cell in an artery of the left arm is on its way to deliver
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The seven processes of life The seven processes of life are the key to all living organisms: these processes consist of nutrition‚ growth‚ movement‚ respiration‚ reproduction‚ sensitivity and excretion. Although‚ they may be achieved in different ways depending on the organism. These processes happen with in both plants and animals; in each organ‚ cell and organelle. All these processes are interlinked and have a chain effect upon one another. Without one of them the others aren’t possible.
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Life on Earth. 1. Analysis of the oldest sedimentary rocks provides evidence for the origin of life. * Identify the relationship between the conditions on early Earth and the origin of organic molecules. * Scientists estimate that the universe is 10-20 billion years old and arose as a big bang‚ which is still expanding the universe. * The early Earth was very different from the Earth today and no oxygen was present. This means that there was no ozone layer exposing the Earth’s surface
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