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【IB干货】IB生物IA主题盘点,不用再为生物IA掉头发了……

来源:渊学通      发布时间:

IB生物IA是什么样的呢?其实所有科学课程的IA都源于实验。这里讲的“实验”涵盖两种-自己的实验和别人的实验。大多数学生会选择自己做实验,那就要求从设计,操作,分析数据,完成报告,全部都有自己来。还有一少部分学生选择分析别人的实验。因为其中省略了自己设计和操作的部分,对“别人的实验”要求就会更高,需要学生能够在网上搜集大数据。同时,对“分析数据”要求也更高,至少要有生物统计学的概念。


介于大多数学生都会选择自己做实验,我们今天也只谈如何选一个合适的题目。毕竟,如果选题不好,后面都是会哭的。由于小伙伴们要用英语写好生物IA,因此本次分享均为英文。



1, Look at the genetic similarities and differences between species, kingdoms, phylas, classes, genuses, orders, families, and domains.

2, Testing global warming: How does CO2, water vapour, oxygen, or any other variable affect  temperature inside a cutoff bottle exposed to simulated sunlight?

3, Describe how the primary productivity of algae changes with temperature, algae concentration, other aquatic plants, salinity, nutrients, and any other variables you may want to consider.

4, How does varying the gel concentrations of agarose affect DNA migration through a gel?

5, Effect of BMI on skin surface temperature in various body areas on rate of recovery once exposed to cold.

6, How does sudden change in body position affect heart rate and baroreceptor feedback?

7, How do the respiration rates of baker’s yeast and wine yeast in various sugar solutions compare?

8, How do the buffering actions of milk, yogurt, juices, detergents etc. compare?

9, Do our reaction times slow down with age?

10, Can we slow down the decaying times of vegetables? Can temperature, humidity, or exposure to sunlight affect how quickly vegetables decay?

11, What is the effect of the salt concentration on germination of different types of seeds?

12, What happens after the best-by date of dairy products?

13, Comparative study between 5 different species of animals using BLAST analysis to determine evolutionary history

14, What is the respective change of allele frequency when initial frequencies are manipulated?

15, Analysing the impact of river pollution on marine life.

16, Determine the effect of glucose concentration on the rate of osmosis.

17, What is the effect of pests on the diversity of plants in a lawn?

18, What is the effect of isotonic drinks on rehydration and recovery after exercise?

19, What is the difference in the CO2 levels exhaled before and after enduring physical exercise?

20, Testing the effectiveness of different types of toothpaste in inhibiting the growth of different types of bacteria.

21, The effect of temperature / light on fruit ripening

22, Exploring stomatal density in a variety of conditions

23, Testing the effectiveness of toothpaste types

24, Investigating the effect of smoke water on the germination and growth of E.pilularis

25, Exploring the effect of sunlight on biomass

26, Exploring effect of light levels on the predation of the peppered moth

27, Investigating the effect of different light intensities on water weeds

28, How do different antibiotics interact with the process of seed germination?

29, Determining the effect of time on the plasmolysis of potatoes

30, Exploring mollusc shapes with regards to an external variable e.g. location on shore


上面就是今天小编收集的关于IB生物IA主题的盘点!怎么样,是不是很干货呢!其实搜集往届IA选题,很多时候我们是不知道自己想做什么的,那就不妨看看别人做了什么,常常会有灵光乍现哦。

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