News & Events
CIS Biology Day
- December 20, 2019
- Posted by: Malcolm Harrison
- Category: Uncategorized
Last Saturday morning, an enjoyable Biology Day took place in the fifth and sixth floor of J2 building. Under the distinguished leadership of Miss. Jane Liu the biology teacher of CIS, a series of activities were successfully conducted by the whole AS Bio-students and several G2 bio-students together. As feedback from participating classmates reflected, it was a diverting and exciting activity, and they hope this pleasurable ‘Day’ could frequently be organized in the future.
Introduction of activities:
- Blood type detection
Foremost, the first part comes to the blood type detection which was principally dominated by Dan Li from AS BM. The section associated with how to use antibodies A and B to discover different blood types of the participants. By taking the blood sample of participants and putting them into two different antibodies to see the result.
“To detect different blood types, you need to see whether the blood drops form clots in different antibodies. Here are several situations, it will be type A if the blood drop only becomes clotting in antibody A, type B if it only clotted in antibody B, clotted in both A and B antibody, then it will be AB blood type, if none of them, it must be O blood type.”suggested by student Dan Li.
Overall, classmates were all enjoyed in finding out their own blood types and were curious about how this process operates.
- Appearance of ‘DNA’
The activity was held by Jacob Li in AS AT, which was about investigating how the DNA looks like. By adding the soap and alcohol into the grinding apple pieces, there will be white stuff suspended in the surface of liquid, after drying it out, the appearance of DNA has clearly shown.
One AS participant said, “This activity demonstrated the nature of cells and all other living things, and this was the first time I knew what a DNA looks like, I felt amazing and I thought it is supernatural to see how DNA is like. I think biology is truly funny.”
- Earthworm dissection
This activity was held by Dale Peng in AS BM, and this was mainly about to find out the inside structure of an earthworm with different tiny organs demonstrating. An earthworm is a tubular, segmented worm of the phylum Annelida. They occur worldwide and are commonly found in soil, eating live and dead organic matter.
By cutting out the abdomen of the earthworm in longitudinal section on a A4 paper with soft board under, then using the pins to firm two sides of the earthworm, a clearly inner body part of earthworm could be seen. An earthworm’s digestive system runs the length of its body. It respirates through its skin. It has a double transport system made of coelomic fluid that moves within the fluid-filled coelom and a simple, closed circulatory system.
- Juicy gummy ball making
This activity was conducted by Simon Wan from AS BM, Vicky Cai and Tom Liu from AS AT respectively. To make this kind of jelly-like candy, juice, sodium alginate and calcium chloric are needed. By primarily mix the juice together and sodium alginate together by the ratio of 2:1, keep stirring it till it mix completely together to form a new solution. Finally, before putting it into filter paper to filtrate the ball out, the solution was added into the calcium chloric to form the shape of ball. This activity was handy with all equipment needed, thus, a variety of students were taking part quite active with their full passion. Additionally, the outcome of this experiment was all successful and students were all satisfied with what they’ve made.
By Yuki Cao Lower 6th Form
Thoughts from the teacher
The 6th of December wass biology day. AS biology students designed and managed a series of activities for this day with help from G2 biology students. All activities are safe, enjoyable and orderly. They designed four interesting biology experiments for students to choose. They are DNA extraction, earth warm dissection, blood type test and juicy gummy ball making. Different experiment apply different biological theory and skill. A lot of students see real DNA in DNA extraction experiment, know how to identify the head and tail of an earth warm and understand that earth warms will not grow in to two if we cut them in a half. We found the probability of A blood type in our school is biggest, AB blood type is rare. Juicy gummy ball experiment was the most popular one because students can make delicious gummy by themselves. Normally this experiment is used to immobilise the enzyme in biology, our genius students change the enzyme to juice to make it tasty.
All activities in biology day were designed and managed by biology students. There were two heads: Rekey and Amelia. They helped to design the schedule and cooperated with the leaders and teachers. There were four leaders of activities. Dan received professional training about blood type testing from a hospital for his activity. Dale searched a lot about earth warm and delayed his extra lessons to attend his activity. Tom, Simon and Vicky changed three plans to make their experiment become most popular one. The rest of AS students and G2 biology students also helped a lot to prepare the solutions and apparatus for activity. As the teacher I would say ”Biology day is a day belong to students to explore the amazement and interest of biology, all student who involve this activity did great job and reached great success.