A*学员要备的IGCSEbiology考点总结 整本书的考点都在这了！

虽然英国取消了本土大考，但是国际生的考试还是会如期举行，不管是3月还是5月的考试，留给同学们的时间都不多了。今天给同学们总结了一波IGCSEbiology考点，希望能够帮助同学们的复习。

Cells

比较简单，一般不会有大题 

Movement in and out of cells

a.一定要背diffusion，osmosis和active transport的定义

b.考题一般和其他章节一起考。

比如植物根如何吸收水（osmosis），吸收无机盐（active transport）吸收氧气（diffusion）

Chemicals of life

a. 记住food test

b. balanced diet

c. 记住每种营养物质的作用

carbohydrate， fat，protein，cellulose，vitamin（C&D)，minerals（Fe&Ca）and water的作用

d. carbohydrate， fat，protein，cellulose的组成单位

Enzymes

a. enzyme 的6大特征

(1protein, 2catalyst, 3specific, 4optimum ph,5 optimum temperature, 6denature at high temperature)

b. lock & key

c. describe & explain 温度和酶的关系

d. Fermenter

f. biological washing powder

Plant nutrition

a. 光合作用方程式

b. 叶片的结构和各部分的特征以及功能(waxy cuticle, upper epidermis, palisade mesophyll, spongy mesophyll, vein, lowerepidermis, guard cell)

C. guard cell 如何控制气孔大小（gas exchange, photosynthesis and transpiration）

d. 缺magnesium和nitrate 对植物的影响

f. limiting factors 对光合作用的影响

Animal nutrition

1. tooth decay

2. for and against fluoride

3. adaptations and functions of ileum

4. function of duodenum

5. function of liver

6. function of pancreas

7. functions of stomach

Transport

1. structure of heart

2. differences between artery, vein  and capillary

3. adaptations and functions of red  blood cell

4. adaptations of functions of  lymphocyte and phagocyte

5. HIV

7. functions of platelets

8. cardiac cycle   

Respiration

bad effects of smoking 

Coordination  and response

1. Structure of eye

2. endocrine system vs nervous system

3. describe iris reflex,  accommodation reflex, withdrawal reflex

4. adrenaline

5. cones vs rods

6. voluntary vs involuntary

Homeostasis and excretion

1. how to maintain body temperature

2. how to regulate blood glucose  level

3. the structure of kidney

4. the structure of nephron and the  functions of each part

5. dialyasis vs kidney  transplantation

6. tissue rejection

Drugs

1. bad effect of heroin

2. bad effect of alcohol

3. the evoluation of  antibiotic-resistant bacteria

Reproduction

1. sexual reproduction vs asexual  reproduction

2. 4 hormones in menstrual cycle (  FSH,LH, oestrogen and progesterone)

3. secondary characteristics of male  and female

4. formular milk vs mother's milk

5. functions of placenta

6. sperm vs egg

7. functions of amnion

8. birth control

9. treatment of gonorrhoea

10. HIV

11. wind-pollination vs insect  pollination 

12. germination

Inheritance and evolution

1. maria VS sickle cell anaemia

2. codominant (ABO blood type)

3. the process of making insulin from  Gene-modified bacteria

4. Natural selection

Living organisms in their environment

1. energy loss along food chain

2. nitrogen cycle

3. carbon cycle

4. describe and explain population  curve

Humans and the environment

1. acid rain

2. deforestation

3. bioaccumulation of pesticide

4. radiactive pollution

5. plastics

6. sewage(containing nitrate and  organic substances)

the purpose and measure of

1. preservation of species

2. limited resources (minerals ,  forest)

3. water

以上就是关于IGCSE生物的考点了，想事半功倍地做好准备，那就赶紧点击预约试听【IGCSE同步培训班】。海归IGCSE授课，每周一次，精讲国际课程知识，随学随练随讲，帮助你始终保持优异表现。

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