During this week (23-27 Nov), we started the class on Monday by learning a new topic about the eleven human body systems in general. The eleven body system are digestive system, excretory system, respiratory system, circulatory system, nervous system, endocrine system, muscular system, skeletal system, integumentary system, immune system and reproduction system. Every system consist of organs with its own tissue, consisting of cells each with DNAs. Each of the system has its own specific function with its own organ to maintain life in our body. On Tuesday, we continue to on our topic, focusing more on immune system. Immune system is our body's defense against disease and infection. The major actor of immune system is interferon which detect virus and stops it from infecting other cells. Another major actor is t-cells or white blood cells that functions to recognize infected cells and cancer cells and kills it. Immune system also allows us to build antibody so if we ever receive the virus again, our body have the cure. Without immune system, our body will be very vulnerable and easily got sick. On Friday, we were told to write our weekly reflection on weebly at the beginning of the class. We continue our research to do the report, movie and brochure for the group disease research. The disease that we research is MERS. Very tired today, with no spirit of school.. heck, no spirit of life at all. Well, I rarely opens up myself but apparently I'm kinda having difficulty in continuing to live. So if I'm acting unusual, please understand.
0 Comments
This week (16-20 Nov), we started the class on Monday by continuing the DNA code scavenger hunt workshop. Once we are finished, Ms. Disty gave us another workshop about DNA code translation and identifying codon and anticodon. We were also told to write the process of protein synthesis and write the steps on our workshop. We also have to draw the polypeptide chain. On Tuesday, Ms. Disty is absent but we were told to continue our research for the project and that the group report is due on next Friday. We continue our group research and start making the group report. Get well soon Ms. Disty! On Friday, we were told to write the weekly reflection on weebly and continue our group project about the disease that we focus on researching. We are also allowed to continue our unfinished workshops if we are not done yet. This week (9-13 Nov), we started the class on Monday by learning about new topic, which is DNA replication, translation and transcription. We start of with DNA replication. DNA replication is needed for reproduction and to provide heredity for the next generation. They replicate first before forming a code. The codes are later used to make protein. The replication process is helped with DNA polymerase, which is an enzyme that add extra bases to create 2 DNA strands for replication. DNA polymerase also add nucleotide to the new parent strand. They cannot read if there is no code. Helicase cut the hydrogen bond so that the DNA could separate for replication. The process is done on the replication fork. The gyrase enzyme make sure the DNA is not tangled back and keeps it open. DNA ligase make sure the bonding is correct. On Tuesday, we continue our topic and move on to DNA transcription and translation. Transcription and translation is a part of protein synthesis, and it is important since everything that we have in our body is made of protein. There are three types of RNA for protein synthesis which is mRNA that functions to carry message from nucleus to ribosome, tRNA that functions to bring amino acid to ribosome, and rRNA that functions to bring mRNA and tRNA together. Transcription process is to make mRNA from DNA code and it happens in nucleus. Translation later happens in ribosome, where the mRNA travels from nucleus to there through cytoplasm. In cytoplasm, the mRNA will meet tRNA. Later, in ribosome, the protein will be made. On Friday, Ms. Disty provide us a scavenger hunt workshop where we are given DNA codes and must translate it to mRNA in order to match it with the words spread around that will later form a sentence. Its a good and fun workshop since it allows us to move and not just sit around and listen. Sometimes, its good to be able to move around. This week (2-6 Nov), we started the class on Monday by making the questions we need for the formative assessment. We were told to make our own questions regarding about the things we learned this term genetics and heredity, and we will be graded based on the questions we made for the formative assessment. There are each type of questions that differ in how much points it worth. The formative must have a total of 20 points and no more. I decided that this is my chance to make a hardcore question to someone hehehe *evil laughs*. On Tuesday, we submit the questions we were told to make in a printout form along with the answer key. Ms Disty collect the questions and divided it randomly. I get the smart student’s question, but luckily the questions are not as hard as I expect it to be. I barely managed to finish on time, but luckily I did, and my answer seems convincing enough. After we were done, we were told to submit the assessment to the creator so that they will attach the answer key on it. I forgot to make my answer key, but I promise i will submit my answer key on Monday. On Friday, we were told to sit in our group and work on the project. We divided the roles, who search what, and started doing the research. Ms Disty also shows us an example of last year’s psa and brochure. Due to highscope’s "awesome” internet, we did not get much informations that help our research. Instead, we make plan on how the psa and the brochure will be like. We are determined to make our psa and brochure better than the one on the example, so have hopes for us Ms Disty! During this week (26-30 Oct) in Biology class, we started the class on Monday by conducting a mini lesson about recessive genetic disorders. Recessive genetic disorder is a disease that affect people born with recessive genes. Carriers are people who carries the gene’s disease but does not have the disease’s symptom. Example of recessive genetic disorder is cystic fibrosis where the their mucus producing gland produce excessive mucus and the mucus cannot be absorbed. Albinism is due to the inability of body to produce melanin, causing pale skin, hair and pale eyes. Tay-sachs disease is a disease that caused by the absence of enzyme responsible for breaking down fatty acid, causing them to accumulate the brain and make the neuron larger. Galactosemia is a disease where the body is unable to digest galactose, On Tuesday, we learned about dominant genetic disorder which is a disease that affect people born with dominant allele, either its homozygous or heterozygous. Example of dominant genetic disorder is Huntington’s disease which affect muscle coordination and the brain, affecting motor skills to decline. Achondroplasia is a disease that cause dwarfism, causing their body to be smaller even though they are adult and also with large head. There are no cure for any of this diseases. We also learn about pedigree, which is a diagram that shows the line of inheritance of a certain trait through generation. On Friday, we learned about sex-linked disease, which is a disease related to the chromosome of male and female. Female’s chromosome is homozygous with xx chromosome, while male’s chromosome is homozygous with xy chromosome. The gene on male’s x chromosome will be expressed in their phenotype even if its recessive. Most of the sex-linked disease are x-linked because there are 120 genes are known to be x-linked. Example of the disease is hemophilia, which is a disease of blood clotting inability and minor cut cause severe bleeding, mostly happens in male because if female get affected on one of its x chromosome, female still have other x chromosome to replace the mutated chromosome’s function, but male only have one x chromosome and the y chromosome cannot replace the mutated x chromosome’s function. Color blindness is an x-linked disease where people cannot differentiate red and green at the same time, it mostly occur on males due to same cause with hemophilia. Muscular dystrophy is an x-linked disease where the muscle weaken and get worse its year, causing them to survive no longer than thirty, it mostly occur on males due to the same cause with hemophilia and color blindness. Lastly, hypertrichosis is a y-linked disease where our ear grows excessive hair, occurs only in male since female does not have y chromosome. |
AuthorName: Astrida Nayla Archives
April 2016
Categories |