IB Biology SL IA – 7점 (Osmosis)

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이 문서는 염화 나트륨을 통한 삼투압이 당근의 중량에 미치는 영향이라는 주제로 작성된 Biology SL IA입니다. 특히 Introduction, Background research와 Evaluation (Limitation and Improvements)가 잘 작성되어 있어 Biology 모범 예시가 될 수 있다고 생각합니다. 또한, 시간과 노력을 굉장히 많이 투자한 만큼 완성도가 매우 높은 IA이며 그에 따라 IA 7점 바운더리 기준을 넘길 수 있었습니다. 이 자료가 IB biology SL IA 때문에 고민하는 학생분들에게 큰 도움이 되었으면 합니다

 

[본문내용]

How does the concentration of sodium chloride affect the percentage change of mass of carrots?

                                                                                                                                                      

Rationale

Osmosis is a net movement of water molecules through a semipermeable membrane from an area of higher water potential to an area of lower water potential (Biology-online, 2018). Osmosis is crucial not only for humans as it stabilizes the internal environment of cells, but also for plants because water moves into plant cells by osmosis so that plants can gain water which is very essential for photosynthesis (BBC, 2018). However, too low or high rate of osmosis can cause serious problems for plant cells. If plant cells lose too much water by osmosis, they will become less rigid and eventually the cell membrane will shrink away from the cell wall, causing the plant to wilt (BBC, 2018). Conversely, if too much water enters into cells by osmosis, the membrane can swell up and burst (BBC, 2018). Thus, finding out the favorable condition that the optimal rate of osmosis can occur (which does not create too low or much water entering into cells) and discovering the method to maximize the activity of osmosis were considered to be very significant…

 

  • 총 페이지수: 14 pages
  • 과목명: Biology
  • 주제:
  • The file is in Word format.
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IB Biology SL IA – 7점 (Osmosis)

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