Hong Kong Diploma of Secondary Education Examination Integrated Science School-based Assessment Sample Tasks Teachers may use the sample tasks for non-profit making educational and research purposes with proper acknowledgement. © 2009 Hong Kong Examinations and Assessment Authority All Rights Reserved 2009 TABLE OF CONTENT Task C1 C2 C4 C5 C6 C7 C8 E3 Title Osmosis in Living Tissue Catalytic Activity of Enzyme Action of Electricity on Substances Encountered in Daily Life Do
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Biology Honors Final Exam Review Study Guide A. Intro Unit * Characteristics of life (DR.CHARGE) * DNA * Directs protein synthesis * Reproduce * Divides in mitosis (asexual reproduction) * Cells * Homeostasis * The process by which cells maintain constant internal condition (water‚ temperature) * Adaptation (Evolution) * Respond to stimulus * Growth (Development) * Energy * Heterotroph: an organism that cannot synthesize its own food
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part of a plant. A year later‚ the German zoologist Theodor Shwann made the same claim about animals. And in 1858‚ a German physician Rudolph Virchow observed that cells come only from other cells. The observations of Shleiden‚ Shwann‚ and Virchow form what is known today as the cell theory. The cell theory is stated in three parts: 1.All living things are composed of one or more cells. 2.In organisms‚ cells are the basic units of structure and function. 3.Cells are produced only from existing
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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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Biology - Main Questions And Answers: Complete the table with a tick if the statement in the first column is true‚ for each process. Write a simple equation to show how ATP is synthesised from ADP: ADP + Pi ATP Give two ways in which the properties of ATP make it a suitable source of energy in biological processes: 1. Energy released in small/suitable amounts 2. Soluble 3. Involves a single/simple reaction Humans synthesise more than their body mass of ATP each day.
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base‚ or neutral. 8. What is a base? a. Accepts hydrogen ions from another substance that have a pH>7. It taste bitter and feel slippery. 9. What is an acid? a. Component with a positive or negative charge that break apart in water to form a hydrogen ion. (H+) 10. What does it mean if a solution has more hydrogen ions (H+)? a. More acidic the solution is 11. What does it mean if a solution has more hydroxide ions (OH-)? a. Basic 12. What does it mean if a solution
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PATTERNS IN NATURE – Summary Notes 1. ORGANISMS ARE MADE OF CELLS THAT HAVE SIMILAR STRUCTURAL CHARACTERISTICS 1.1 Outline the historical development of the cell theory‚ in particular‚ the contributions of Robert Hooke and Robert Brown The Cell Theory states that: All living things are made of cells (Theodor Schwann & Matthias Schleiden) Cells are the basic structural and functional unit of organisms (Theodor Schwann) All cells come from pre-existing cells (Rudolf Virchow) The historical
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Chapter 5: The Reluctant Fundamentalist Homework Why is the interaction with the hostile driver in Manila significant? This interaction is significant because it is the first time that Changez sees himself as the rich‚ stuck-up‚ corporate American working man rather than a Pakistani in another country. It is due to the look of disgust he sees in the eyes of the driver that he realizes who he has become. He even tells people‚ upon being asked where he is from‚ that he is from New York‚ despite
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Stomatal pores are formed between pairs of specialised guard cells. The wall adjacent to the stomata is thicker than the other walls. When a guard cell swells or shrinks due to the gain or loss of water‚ the thickened wall is the only one to maintain its form. Consequently when the guard cells shrink‚ they shift towards each other‚ closing the stomata. Water enters the guard cells by osmosis. The amount and direction of movement of water is influenced by several factors‚ one of which is light. Light
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Anna Nicole Smith (born Vickie Lynn Hogan) (November 28‚ 1967 – February 8‚ 2007)‚ was an American model‚ actress‚ and television personality. Smith first gained popularity in Playboy‚ becoming the 1993 Playmate of the Year. She modeled for clothing companies‚ including Guess jeans and Lane Bryant. Smith dropped out of high school at age 15 and was married in 1985. Her highly publicized second marriage to oil business mogul‚ J. Howard Marshall‚ 62 years her senior‚ resulted in speculation that
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