Subject Title : Biology Program : Diploma Program (IB) School Year : 2014-2016 Instructor : Jeffrey Joseph Y. Araula‚ MMM NATURE OF THE SUBJECT Biology is the study of life. The first organisms appeared on the planet over 3 billion years ago and‚ through reproduction and natural selection‚ have given rise to the 8 million or so different species alive today. Estimates vary‚ but over the course of evolution 4 billion species could have been produced. Most of these flourished for a
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GURUKULAM Syllabus for Recruitment Test Category of Post: PGT – Biological Science Part – I GENERAL KNOWLEDGE AND CURRENT AFFAIRS (Marks: 08) Part – II CHILD DEVELOPMENT AND PEDAGOGY (Marks: 08) 1. Development of Child Development‚ Growth & Maturation – Concept & Nature‚ Principles of development‚ Factors influencing Development – Biological‚ Psychological‚ Sociological‚ Dimensions of Development and their interrelationships – Physical & Motor‚ Cognitive‚ Emotional‚ Social‚ Moral‚ Language relating
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Introduction In Australia‚ kangaroos are endemic marsupials from the family Macropodidae in Australia (Bradford‚ 2016). Under genus Macropus‚ there are 4 largest macropods that known as “great kangaroo” which are antilopine kangaroo‚ the eastern grey kangaroo‚ the western grey kangaroo and the red kangaroo (Bradford‚ 2016). Kangaroos vary in size across the species which red kangaroo is the largest marsupial with can grow to 1.6m and 90kg in weight while musky rat-kangaroo is only 6 to 8 inches
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means they shy away from any form of light fixture. Each worm has both male and female reproducing organs; however‚ they are monoecious in that they are not self-fertilizing. The most common form is asexual. They appear for function mainly as osmoregulation‚ the control of the levels of water and mineral salts in the blood.
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Homeostasis literally means “same state” and it refers to the process of keeping the internal body environment in a steady state‚ when the external environment is changed. The importance of this cannot be over-stressed‚ as it allows enzymes etc to be ‘fine-tuned’ to a particular set of conditions‚ and so to operate more efficiently. Much of the hormone system and autonomic nervous systems is dedicated to homeostasis‚ and their action is coordinated by the hypothalamus. In Module 2 we saw how
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Biology 1020 Review Questions for Final Exam 1. who proposed the theory of natural selection ← Darwin and Wallace 2. what are the four characteristic features of natural selection ← Overpopulation ← Inherited variations within the species ← competition ← Survival of the fittest 3. how is fitness measured ← by survival and by the numbers who survive 4. what are some examples of selection in action ← Peppered
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Excretion Notes 4.2.1 (a) Define the term excretion (b) Explain the importance of removing metabolic wastes‚ including carbon dioxide and nitrogenous waste‚ from the body. Definitions: Excretion: “The removal of waste products of metabolism from the body”. Ingestion: “The intake of substances into the stomach”. Digestion: “The breakdown of molecules that are ingested from large molecules into small molecules”. Absorption: “The intake of those small molecules through the plasma membrane
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Biochemistry Essential Elements of Life Carbon‚ hydrogen‚ oxygen‚ nitrogen (96%) Calcium‚ phosphorus‚ potassium‚ sulphur (4%) Isotopes Atoms of an element that differ in neutrons Radioactive isotopes decay spontaneously‚ giving off energy Cohesion Hydrogen bonds hold water molecules together Adhesion is an attraction between two substances Surface tension measures how hard it is to break the surface tension of a liquid Hydrocarbons Organic molecules consisting of only carbon
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Links to pages in the CGP Revision Guide and weblinks Biology Unit B1 - Topic 1 Classification‚ variation and inheritance 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Links Demonstrate an understanding of how biologists classify organisms according to how closely they are related to one another including: a Species – groups of organisms that have many features in common b Genus – contains several species with similar characteristics c Family – comprising of several genera
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IGCSE Biology 2012 exam revision notes by Samuel Lees Contents: Section I: Characteristics and classification of living organisms 1. Characteristics of living organisms 2. Classification and diversity of living organisms 2.1 Concept and use of a classificatory system 2.2 Adaptations of organisms to their environment 3. Simple Keys Section II: Organisation and maintenance of the organism 1. Cell structure and organisation 2. Levels of organisation 3. Size of specimens 4. Movement in and out
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