WEEK 14!!

JUNE 01, 2015; MONDAY; 10a.m.-12p.m.; at BILIK MESYUARAT FAKULTI;

Assalamualaikum and hi everyone!

I don't know what should I feel either happy or sad. This is our last session in this semester that had been held at BMF. Honestly, I don't like class at here. I feel like dizziness and nausea because I have to look at sideways whenever want to look at slides shown or the lecturer.

Alright, I've been enlighten about Biogeochemical Cycles. Attached video is explained about this topic and it is just same as Dr. Wan said. Have a look at this!

I want to add, cellulose, and lignin can be found in plant cell wall. It can be degrade into organic matter as starch, hydrocarbons, lipids and hemicellulose.

3 major process in Nitrogen Cycle: 

1) Nitrification

2) Denitrification

3) Nitrogen fixation

Denitrification is DISSIMILATORY processtaht use nitrate as the electron acceptor to produce ATP. In other words, reduction of nitrates back into the largely inert nitrogen gas (N2) or Nitrous oxide (N2O) and Nitrite (NO2), by Pseudomonas under anaerobic condition. NItrite can be reduced directly to ammonia by Geobacter sp. , Desulfovibrio sp. and Clostridium sp.

New term: Rhizotroph is a procaryote which can produce Nitrogen.

Did you know that lightning can fix nitrogen? Nitrogen is useful  in soil as fertilizers and as amino acid in protein. 

Furthermore, I interested to know that Shewanella sp. can generate electricity.

J.-H. Lee, M.-G. Kim, B. Yoo, N. V. Myung, J. Maeng, T. Lee, A. C. Dohnalkova, J. K. Fredrickson, M. J. Sadowsky, H.-G. Hur. Biogenic formation of photoactive arsenic-sulfide nanotubes by Shewanella sp. strain HN-41. Proceedings of the National Academy of Sciences, 2007; 104 (51): 20410 DOI: 10.1073/pnas.0707595104

The LAST topic for this semester is Aspect of Biotechnology in Microbial Ecology. It is all about study the relationship between microorganism and environment and microorganism itself. In this topic, I should know the function of microorganisms in ecosystem. Some of the functions are:

1) As pollutants

2) Cause pollution

3) Indicator of pollution (e.g: biofilm, lichen)

4) Reduce pollution (e.g: alkali)

That's all from me.. See you all in next semester!! :) ;)