Summary IAL Biology Unit 5 - Key Takeaways for each paragraph for the Scientific Article - JUNE 2024
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International A Level
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International A Level
Key Takeaways for each Paragraph for Pearson Edexcel International Advanced Level for use with Question 8 – Unit 5, June 2024
In unit 5, the last question (question 8) is based on a pre-released scientific article a total of 30 marks.
In this document, you will find the key takeaways for ea...
WBI15/01– Key takeaways for each paragraph Biology A Level Tutor
Key Takeaways for each Paragraph
for Pearson Edexcel International Advanced Level
for use with Question 8 – Unit 5, June 2024
In unit 5, the last question (question 8) is based on a pre-released scientific article a total of 30
marks.
In this document, you will find the key takeaways for each paragraph. This work refers to the
Scientific Article for question 8 for Biology IAL (International Advanced Level) WBI15/01.
(The article is provided by Pearson Edexcel Examination – June 2024)
1
, WBI15/01– Key takeaways for each paragraph Biology A Level Tutor
Key Take Away for each Article:
Article 1:
Key takeaway: Horizontal gene transfer between plants and insects may occur, as evidenced by
the incorporation of a plant gene into the genome of the silverleaf whitefly, providing protection
from plant toxins. This discovery highlights the potential for genetic information exchange
between organisms and its implications for survival.
Article 2:
Key takeaway: GloFish®, fluorescent transgenic zebrafish, are created using genes from sea coral,
making them illegal in many countries. Detection methods, such as PCR-based assays, are
employed to identify transgenic zebrafish. These methods have been utilized to detect GloFish®
among specimens from traders in certain regions, emphasizing the need for regulatory oversight
and detection technologies.
Article 3:
Key takeaway: Scientists have genetically engineered zebrafish with skin cells that can produce a
wide range of fluorescent colors. This allows for tracking individual cell development, movement,
and regeneration. By injecting a gene encoding red, blue, and green fluorescent proteins into
single-cell fish embryos, the resulting "skinbow" zebrafish exhibit diverse skin colors. Each skin
cell contains multiple copies of the gene, resulting in random combinations of red, green, and
blue proteins. This provides a valuable tool for studying cell dynamics and tissue regeneration.
Regeneration and repair
Key takeaway: Genetically engineered fish, along with its offspring, offers a unique opportunity
to observe and track the movement of skin cells during tissue regeneration and injury repair. By
using specialized imaging techniques and software, researchers can monitor individual skin cells
based on their color, allowing them to understand the turnover rate of skin cells and how they
respond to injuries. This approach provides insights into the dynamics of cell behavior within a
live animal, offering potential advancements in understanding tissue regeneration processes.
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