Topic 1 IGCSE生物學(xué)習(xí)內(nèi)容介紹，好不好拿分？

 

　　對(duì)于很多同學(xué)們來說，IGCSE生物可能是IGCSE中最簡(jiǎn)單的科目之一，通過定期復(fù)習(xí)和練習(xí)歷年P(guān)ASS PAPER，可以很輕松地搞定這一學(xué)科。教學(xué)大綱涵蓋了種類分類、動(dòng)物生理學(xué)、植物生理學(xué)和遺傳學(xué)等廣泛的主題，使其更加多樣化和令人興奮！從學(xué)生的書中學(xué)習(xí)規(guī)范，一個(gè)A*很容易哦！下面A+小編就為大家介紹topic 1 IGCSE生物學(xué)習(xí)內(nèi)容。

IGCSE生物學(xué)習(xí)內(nèi)容

　　考試本身分為p1和p2。兩者都涵蓋相同的主題集，但問題模式往往不同。對(duì)于生物學(xué)來說，p1的實(shí)驗(yàn)性更強(qiáng)，而p2的實(shí)驗(yàn)性更強(qiáng)，理論性更強(qiáng)。

　　某些問題會(huì)不時(shí)重復(fù)，建議記住標(biāo)記方案點(diǎn)，以避免不必要的標(biāo)記丟失。

　　長(zhǎng)話短說，生物學(xué)很有趣，只要一點(diǎn)誠(chéng)意和練習(xí)就可以掌握。

　　▎Subject Information.

　　以下為Topic 1的要點(diǎn)，供各位即將步入IGCSE生物學(xué)習(xí)的同學(xué)們參考:

　　Topic 1–Key concepts in biology(Topic 1 content is common to all the biology papers)

　　(Topic 1–Overarching concepts in biology)

　　(Edexcel 9-1 GCSE Biology 1,Paper 1,Topic 1"Key concepts in biology")

　　You should be able to....

　　◆Be able to explain how the sub-cellular structures of eukaryotic and prokaryotic cells are related to their functions,including:

　　animal cells-nucleus,cell membrane,mitochondria and ribosomes

　　plant cells-nucleus,cell membrane,cell wall,chloroplasts,mitochondria,vacuole and ribosomes

　　bacteria-chromosomal DNA,plasmid DNA,cell membrane,ribosomes and flagella.

　　Introduction to plant and animal cell structure and function gcse biology revision notes.

　　◆Be able to describe how specialised cells are adapted to their function,including:

　　sperm cells–acrosome,haploid nucleus,mitochondria and tail.

　　egg cells–nutrients in the cytoplasm,haploid nucleus and changes in the cell membrane after fertilisation.

　　ciliated epithelial cells.

　　Introduction to cell specialisation gcse biology revision notes.

　　◆Be able to explain how changes in microscope technology,including electron microscopy,have enabled us to see cell structures with more clarity and detail than in the past and increased our understanding of the role of sub-cellular structures.

　　Microscopy-the development and use of microscopes in biology gcse biology revision notes

　　◆Be able to demonstrate an understanding of number,size and scale,including the use of estimations and explain when they should be used

　　◆Be able to demonstrate an understanding of the relationship between quantitative units in relation to cells,including:

　　milli(10-3),micro(10-6),nano(10-9),pico(10-12)

　　(HT only)Do calculations with numbers written in standard form

　　◆Core Practical:You should have investigated biological specimens using microscopes,including magnification calculations and labelled scientific drawings from observations.

　　Microscopy-the development and use of microscopes in biology gcse biology revision notes

　　◆Be able to explain the mechanism of enzyme action including the active site and enzyme specificity

　　◆Be able to explain how enzymes can be denatured due to changes in the shape of the active site

　　◆Be able to explain the effects of temperature,substrate concentration and pH on enzyme activity.

　　◆Core Practical:You should have investigated the effect of pH on enzyme activity.

　　◆Be able to demonstrate an understanding of rate calculations for enzyme activity

　　◆Be able to explain the importance of enzymes as biological catalysts in the synthesis of carbohydrates,proteins and lipids and their breakdown into sugars,amino acids and fatty acids and glycerol.

　　ENZYMES-structure,function,optimum conditions,investigation experiments gcse biology revision notes

　　See also Enzymes and Biotechnology(gcse chemistry notes)

　　◆Investigating the use of chemical reagents to identify starch,reducing sugars,proteins and fats

　　◆Be able to explain how the energy contained in food can be measured using calorimetry

　　◆Be able to explain how substances are transported by diffusion,osmosis and active transport

　　Diffusion,osmosis and active transport gcse biology revision notes

　　◆Core practical:You should have investigated osmosis in potatoes

　　◆Be able to calculate percentage gain and loss of mass in osmosis

　　Diffusion,osmosis and active transport gcse biology revision notes

　　Practicals you may have encountered and should revise too:

　　Investigating the effect of different concentrations of digestive enzymes,using and evaluating models of the alimentary canal.

　　Investigating the effect of temperatures and concentration on enzyme activity.

　　ENZYMES-structure,function,optimum conditions,investigation experiments gcse biology revision notes

　　Investigating plant and animal cells with a light microscope.

　　Microscopy-the development and use of microscopes in biology gcse biology revision notes

　　Investigating the effect of concentration on rate of diffusion.