4th Block Biology

Antibiotics How antibiotics work Some antibacterials kill bacteria outright and are called bactericidal. They directly attack the bacteria cell wall, which hurt the cell. Then the bacteria can no longer attack the body. Antibiotics can only treat bacteria not viruses. Other antibacterials block the bacteria's growth or reproduction. They are often called bacteriostatic antibiotics, they stop nutrients from reaching bacteria. That stops them from dividing and multiplying. It helps stop the infection and give the body time to get the immune system back together and time to attack.  Reflection: I never realized how much antibiotics did for you and the different things that they did. I always thought they just killed the bacteria inside your body. It is pretty cool how antibiotics work. Its great we have doctors working everyday to find cures to more and more diseases with antibiotics. "How Do Antibiotics Work?"  How Do Antibiotics Work? ...

RNA - stands for ribonucleic acid DNA-->RNA-->Amino Acids RNA is similar to DNA, but is chemically different enough to pass through the nuclear membrane. How is RNA different you ask? Well first, sugar : ribose second, structure : single helix third, nitrogen bases: A=U    C=G Reflection: Once I already learned DNA I understood RNA very easily. RNA is literally just like DNA but with just a little twist. The nitrogen bases are easy, you just have to remember that every stay's the same except for A=T. Instead of A=T, it is flipped/changed to A=U. I believe that as long as you understand DNA you will understand RNA.

http://bms.westfordk12.us/pages/teams/7green/cells/grouph/images/plantcell%20cellwall Cell Wall The cell wall is found in only plant cells to protect them. Animal cells do not contain a cell wall. It protects the cell from many things. If something bad tries to affect or damage the cell the cell wall keeps the virus or harmful object from damaging the cell. I did like this topic it was fun. I did already understand it. Cell wall is an easy topic to master and understand.

Meiosis is the cell division in four daughter cells both with half the number of chromosomes of both parents cells I learned that meiosis that it starts with a parent cell that is diploid meaning that it got two copies of each chromosome. the process is four daughter cells that are haploid means that half the number of the chromosomes of the diploid parent cell. this all surprised me because I barley knew any of this and i barley knew anything about it. Wikipedia

Sickle cell anemia is an inherited disease that makes the blood cells rigid, sticky, and sickle or crescent moon shaped instead of the flexible round shape that blood cells are supposed to have. This can cause blood clots and prevent blood and oxygen from getting to where they need to go. There is no cure, but there are medications used to relieve pain and other problems caused by sickle cell anemia.

Incomplete dominance happens when a heterozygous genotype produces a phenotype that's a mixture of the dominant and recessive traits. Example: A red flower and a white flower produce a pink flower.