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Nik's IGCSE Biology: 2.87 understand the function of the eye in focusing near and distant objects, and in responding to changes in light intensity

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Monday, 6 February 2012. 287 understand the function of the eye in focusing near and distant objects, and in responding to changes in light intensity. When the lens shape is changed to adjust to varying distances of objects, this is known as accommodation. And is how we focus light. The ciliary muscles contract. The ciliary muscles relax. These co...

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Nik's IGCSE Biology: April 2011

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Thursday, 28 April 2011. Tuesday, 12 April 2011. Germinate (tube grows downward). Species specific, only same pollen can germinate. Pollen - - - pollen tube (style) - - Ovule. Pollen nucleus Ovule - - - - Zygote - - - Embryonic Plant. Outside ovule forms seed coat (TESTA). Cotyledons (along with Zygote) - food stores to support plant.

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Nik's IGCSE Biology: September 2011

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Tuesday, 20 September 2011. 319 (a) and (b) Screen Capture. 318 (a) and (b) Screen Capture. Monday, 19 September 2011. Fertilisation = "fusion of male and female gamete to produce a zygote that undergoes cell division and develops into an embryo". 1 In both Adult male and Adult female:. Diploid (2n) / 2 = Haploid (n). 39b Female Reproductive System.

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Nik's IGCSE Biology: November 2011

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Saturday, 5 November 2011. Salts (Affects composition of tissue fluid = osmoregulation). Urea (Part of excretion of metabolic waste). Water (Affects composition of tissue fluid = osmoregulation). Varies upon the conditions which a person is operating (environment/circumstances). Flows through bloodstream - kidney. ADH targets collecting duct.

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Nik's IGCSE Biology: June 2011

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Tuesday, 14 June 2011. Process of Dry/Wet Deposition and Locations. Dry Deposition: Sulphur dioxide bonds with transpired water molecules on SA of leaf, causing the leaves to 'burn'. Wet Deposition: Conventional Acid Rain cycle. In Europe (prevailing wind travels NE). Monday, 13 June 2011. 414 Enhanced Greenhouse Gases. Raised sea levels,. B) 50% ...

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Nik's IGCSE Biology: What was the purpose of cloning dolly the sheep?

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Monday, 12 March 2012. What was the purpose of cloning dolly the sheep? The purpose was not the act of cloning dolly itself, but rather the implications that came as a consequence of the knowledge that we could. Employ recombinant DNA technology in living organisms to create a clone. Subscribe to: Post Comments (Atom). 513, 5.14, 5.15.

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Nik's IGCSE Biology: February 2012

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Saturday, 25 February 2012. 511 understand that animals with desired characteristics can be developed by selective breeding. Breeding shifts the distribution curve towards the desired characteristic. Example: Cows milk yield. Cow A: 50 ml. Cow A: 100 ml. 510 understand that plants with desired characteristics can be developed by selective breeding.

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Nik's IGCSE Biology: March 2012

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Monday, 12 March 2012. What was the purpose of cloning dolly the sheep? The purpose was not the act of cloning dolly itself, but rather the implications that came as a consequence of the knowledge that we could. Employ recombinant DNA technology in living organisms to create a clone. Monday, 5 March 2012. 513, 5.14, 5.15. RC DNA into bacteria.

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Nik's IGCSE Biology: May 2011

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Monday, 23 May 2011. Why is only 10% of energy passed from one trophic level to the next? Not all energy available to next consumer.lost in:. Consumer's life processes (Respiration). Eg 90kJ of plant's energy used by aphid for above, 10kJ left for next consumer. 46 Energy and Substances in food chains. Light E - Photosynthesis - Chemical E. Webs -...

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Nik's IGCSE Biology: January 2012

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A site set up to document my studies in IGCSE Biology; with notes on each objective covered that is necessary for the final IGCSE Examinations. Hope you enjoy! Monday, 30 January 2012. 285 describe the structure and functioning of a simple reflex arc illustrated by the withdrawalof a finger from a hot object. Let us observe the flowchart of co-ordination in a reflex system:. Stimulus - Receptor - Sensory neurone - relay neurone in CNS - motor neurone - effector - Response. Example of hot surface reaction:.