A.D.I.L.A 's Blog

Week 6 So now I will talk about plant pollination. Do you know how pollination occurs?? Which part of plants involve in pollination?? How can plant do the double fertilisation?? Pollination occurs by the agent carrier such as wind, insect or water. This agent will transfer pollen to the part of seed plant containing the ovules. Male reproductive organ are anther and filament while female reproductive organ are stigma,style and ovary. There will be 2 sperm, one of it will fertilizes the egg generating into zygote, another one will fertilizes a polar cell with 2 nuclei and generating into endosperm. This is only a short and simple introduction to this chapter. What happens to zygote after fertilization?? ---> zygotic embryogenesis ---> somatic embryogenesi s (not normally involve in development of embryo) Group Work as usual We need to compare and contrast between zygotic and somatic embryogenesis. Both process occur from different embryo but they experienc...

Week 5 Division cycle also occur in plant since they need to grow in cell number. --> mitosis What is mean by totipotency?? Before the lecture session start, I do not know the concept of totipotency. But after I do the researching, totipotency is an ability of plant to regenerate into a whole plant even by plant cell/tissue/organ. It means plant is an indeterminate organism. Even you cut, it will grow as whole. Look on how unique plant is. Furthermore, this ability have different pathways of regeneration by the plant and tissue culture process. This tissue culture will begin from the explant. New terms that I learned: Explant -  transfer (living cells, tissues, or organs) from animals or plants to a nutrient medium. Callus -  a thickened and hardened part of the skin or soft tissue, especially in an area that has been subjected                   to friction.   What activity we done during...

Week 4 Where do the eukaryotic cell come from??? This topic of endosymbiosis will explain about it. The term of endosymbiosis itself explain where the eukaryotic generally come from. It happen when the fusion of prokaryotes causes the rising of eukaryotes. If the bacteria accidentally swallowed autotroph bacteria, it will become origin of eukaryotic plant cell. While if the bacteria accidentally swallowed heterotrophic, it became origin of eukaryotic animal cell. It is said that origin of eukaryotic cell organelles such as mitochondria in animal and chloroplast in plant was greatly advanced by the endosymbiosis process. Thus, our lecturer had given task to compare and contrast the difference of mitochondria and chloroplast. They have difference such as in energy production, final electron acceptor, DNA chromosomal and reproduction. Possible ancestor for chloroplast and mitochondria Due to task given, we had to noting any similarities or differences the mitoc...

Week 3 Another week with another chapter which are about prokaryotes,viruses,prions and viroids. Okay, so all of you must have already know what is prokaryotes, right?? Prokaryotes is much more simpler, have no membrane-bound organelles, no nucleus and so on compared to eukaryotes. But before I continue with this creatures, I just want to tell all of you, we need to thanked all of scientist who had contributed themselves in discovered microorganism such as plant cell and animal cell and also made up the cell theory of life. This is because during the lesson of this chapter, we were watching video of the scientist journey in discovering cell and facing many challenging problems. For Matthias Jakob Schleiden who had discovered plant cell while Theodore Schwann observed the animal cell, Anton van Leeuwenhoek who had made a microscope and discovered single cell, Robert Hooke who discovered cell while observing a slice of cork. Without them, we won't be able to know t...

Week 2 This week we learn about the history of life How did life begin?? Approximately, 4.6 billion years ago earth was formed. But we want to know the formation of earth. So, the earth was said to be formed from the combination of smaller molecules that were carried by comets or that one that present on primitive earth. From this, the ideas of prebiotic broth hypothesis was made. This hypothesis proposes that organic molecules formed near earth’s surface-in a sea of organic soup or on rock or clay surfaces. From what I understand, the step by step formation:    -polymerisation produced large molecules and   macromolecules -metabolize and replicate -protobionts evolved and self replicate -RNA was the first biological   catalysts/informational molecule (Ribozymes) -prokaryotes formed Proceed... Activity that we done together were making a concept map model based on keywords given. This map model tea...

Week 1 The topic for the first week is about  Charles Darwin and Evolution. What do I learn from this topic? Basically, I learn the ideas made by Charles Darwin in terms of evolution where the development of cell occur step by step that change during time. Also, there was another scientist that built another ideas where organisms experience changes from simple to complex. Another theory came from Lamarck where the environment pressure causes the body changes which happen from the short neck giraffe to long neck giraffe.However, Charles came by with another idea where natural selection occur within the environment that causes the physical changes of giraffe. From my opinion, the idea should be compromised because why not?? It might be boring to some people but this thought never crossed in our mind on how the human life long time ago and how did they look like. I have heard the story where human size long time ago was bigger than nowadays because they need ...