IB生物IA主题想法告急？这30个主题快拿去

身为IBer，你一定有为IA秃头的时候吧，为你准备了30个IB生物IA主题想法，不用谢，这都是我们应该做的。

IA：IB课程内部评估

首先我们萌新IBer介绍下，什么是IA。

所谓IA（Internal Assessment），即内部评估，是IB课程中必不可少的一部分，一般由学校导师先进行内部考核评分，再有交给IB官方最终考核。根据IB新公告的核心方向显示，IB分数计算方式为：最终分数=学校重新提交的预估（学校自己订评估方案）+IA EE TOK（交由IBO评估）。

30个IB生物IA主题想法，拿去不谢

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

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

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

以上就是我们今天对IB生物IA主题想法的分享。同学们一定要认真对待IA，不仅因为它直接关系到你最终的IB成绩，IA还会影响导师给你的预估成绩。如果明年我们还是不幸地碰到了大考取消的状况，在没有大家都没有标化成绩的情况下，预估成绩有多重要，相信你应该清楚了吧。

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