MICROBIAL GROWTH & BIOTECHNOLOGY IN MICROBIAL ECOLOGY



This week class, we learned about the microbial growth and aspects of biotechnology in microbial ecology. For the microbial growth, we will be able to distinguish the microbial reproduction which includes: binary fission, budding, fragmentation, sporulation and sexual reproduction. Next, we able s to describe the physical and chemical growth requirements for development of microbial community. For the physical requirements include the pH, water activity, light, and temperature.








For the chemical growth requirements included water, carbon, oxygen, nitrogen, phosphorus and sulfur, special growth factors and trace elements.





For the aspects of biotechnology in microbial ecology, we need to describe the function in ecosystem.There are some function of microorganisms in microbial ecology which are as pollutant, as cause of pollutant, as indicator of pollution, may reduce pollution, for example oil spill and landfills.





we also need to distinguish the applications of microorganisms to improve the ecosystem. For example, microbial application as pesticides. Example: biological insecticides, Bt protein produced by Bacillus thuringiensis. Where it is biodegradable, and its attack specific larval stages of insect only. It must be spray on the plant.




That's all for the lecture this week. I will update again next week. Thank you and bye.




Comments

Post a Comment

Popular posts from this blog

THE FIRST EXPERIMENT

Image
             Hi everyone this blog is about the experiment or practical that i do with my group members. This blog will contain all the conclusion or summary of the experiment and also as reflection and the things that i newly found out. So last  Tuesday, my member and I do practical ambout the CULTURE TRANSFER TECHNIQUE. Which is that we just learn the technique of culturing and how to prevent it from contamination.              Above are the procedure on how to culturing. We got to transfer into three media which is  S. marcescens, broth culture "A" and broth culture "B". It transfer into  slant to broth transfer, broth to slant transfer and slant to agar deep transfer.          After we subculture it we wait for the next day to observe the results. The next day,  the result is observe below are the result that I obtain. S. marcescens to Nutrient Agar Deep S. marcescens  to Nutrient Broth S. marcescens  to Nutrient Agar Slant Broth culture "A" to Nutrien
Read more

First week in Microbiology class

Image
First day of class Microbiology (13/9/2017)            It is the first day class of microbiology. I'm slightly nervous and excited of what will we going through today. As our lecturer Dr. Wan came, she briefly introduces herself and she started to ask us question. She also told us to make 9 group which contain in a group 1 Malaysia. I'm in a group of 5 people. She throw a few question to us about microorganisms and the group of microorganisms. I feel flustered when suddenly Dr. Wan just ask us question without we learn anything but she said that it is her own ways to teach us which is the "Ask question style". She also said that once we go inside the the room, we also going inside the microbiology world.                    On that day, we also learn about the biggest bacteria in the world. It is Thimargarita namibiensis.  Is a gram negative coccoid Proteobacterium, found in ocean sediments of the contenential shelf of Namibia (Source: Wikipedi
Read more

Measurement & Motility of Microorganisms

Image
Hi and welcome to my blog. so our last practical class we did the experiment of measurement of microorganisms and the examination of microorganisms using hanging drop and wet mount.  The  hanging drop technique  is a well-established method for examining living, unstained, very small organisms. The traditional procedure employs a glass slide with a circular concavity in the centre into which a  drop  of fluid, containing the 'microorganisms', hangs from a coverslip. Meanwhile for   In a  wet mount , the specimen is placed in a drop of water or other liquid held between the slide and the cover slip by surface tension. This method is commonly used, for example, to view microscopic organisms that grow in pond water or other liquid media, especially when studying their movement and behavior. preparation of hanging-drop Preparing wet mount Meanwhile for the practical of measurement of microorganisms, we need ocular micrometer and stage micrometer. first we need to find the calibrati
Read more