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ScienceNet - Life Sciences - Microbiology

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ScienceNet is a World Wide Web resource database in Science. It is a community service project by Science Centre Singapore, supported by Nanyang Technological University and National University of Singapore.

We offer free electronic access to various topics in Science and Technology. Feel free to browse through our database and see if we have the answers to your questions.

Life Sciences - Microbiology
Q19892 :	Does a specimen such as bacteria change in size during Gram staining?
Q19776 :	What are the different types of Cyanobacteria?
Q19224 :	Which is more deadly, virus of bacterium?
Q19154 :	When does mitosis occur and when does meiosis occur?
Q19080 :	What is amoeba? Where can I find pictures of an amoeba viewed under a microscope?
Q17844 :	How does milk sour?
Q17788 :	What is gram-negative and gram-positive?
Q17496 :	Why does plasmolysis occur when exposed to heavy metals such as lead? What actually happens?
Q15030 :	What is anthrax? How is it transmitted? What is the treatment for anthrax? Is there a way to prevent infection?
Q14069 :	What is the mechanism that Euglena uses to get rid of waste products. Is there a contractile vacuole?
Q14003 :	Where do I get more information on microscopic aquatic plants?
Q13751 :	What is burning sterilisation in microbiology? What is the purpose of it? And, what equipment is used for burning sterilisation?
Q13739 :	How are Lysosomes created?
Q13442 :	What is the role of prions as pathogenic organisms?
Q12903 :	Where can I get information and pictures of E. coli?
Q12723 :	What are Rhesus babies?
Q12306 :	What exactly is a prion? Is it possible to denature them in the living or dead animals and what diseases other than BSE (bovine spongiform encephalopathy or 'mad cow' disease) are caused by prions?
Q11872 :	What is the size of a cell?
Q11821 :	How do bugs get into flour?
Q11411 :	Does heat kills all bacteria? Does cold really put all bacteria to "sleep"?
Q11168 :	What are the ideal conditions for cholera growth? Over what time period does cholera multiply?
Q11082 :	What do white blood cells look like?
Q11075 :	May I know what is Aspergillus niger?
Q11014 :	Where can I find some pictures of a Golgi apparatus?
Q10901 :	What is the origin of the word 'pinocytosis'? How does its origin fit its present meaning?
Q10819 :	What are the different types of harmful and useful bacteria?
Q10706 :	What exactly are amoeba and paramecium?
Q10260 :	How do viruses affect a human cell or any other host cell?
Q9962 :	What are the functions of chloroplast, mitochondrion and Golgi apparatus?
Q9901 :	What are vacuoles?
Q9628 :	What is an example of a eukaryotic organism?
Q9380 :	What is bread mould? Can you tell me more about it?
Q9293 :	Could you please provide a reference for the number of cells in the human body. I read in a textbook (but I can't remember which one) that there are ~ 10 trillions cells in the average human body. ScienceNet recently answered this question with the value 50-100 trillion. But I need an actual reference for a paper I am writing. Thanks a lot.
Q5458 :	What is cytoplasm and what are its functions, composition, and use?
Q5082 :	Is plasmolysis reversible?
Q3750 :	What is the difference between a plant and an animal cell?
Q3523 :	Could you explain mitotic division?
Q3013 :	What is a virus?
Q2904 :	What is AIDS virus and what does it do to our body?
Q2884 :	Since the HIV affects the T-helper cells in the body, is it possible to eradicate HIV by taking out all the T-helper cells from the body? Can the patient survive without the T cells if quarantined in a sterile environment? Is it possible then to separate the infected T cells from those uninfected ones so that the virus can be eradicated and the T cells returned back to the body?
Q2878 :	Does vaccine always work?
Q2794 :	If Ebola Reston (harmless) is really a mutated form of Ebola Zaire, can we cure the latter by administering something which will mutate it to Ebola Reston? May I know what treatment or vaccine is available at the moment for Ebola infection?
Q2789 :	Vaccines can be made from 'weakened' microorganisms (attenuated). Therefore, if a person already has antibodies against a particular microbe, will he have an adverse immune response if he is vaccinated with the attenuated microbe?
Q2101 :	What do you call the process in which heat is used to destroy harmful bacteria in fresh milk? If there are many names for it, please give me all of them.
Q1793 :	What does it mean when we say that sea water is isotonic to the cytoplasm of sea organism but hypertonic to the cytoplasm of fresh water organism? What is plasmolysis?
Q1767 :	I'm looking at developing a method to determine the molecular weight cut off of a membrane which will be used to exclude bacteria and viruses. Could you tell me what are the largest and smallest bacteria and viruses and what are they? Do they also have different shapes?
Q1685 :	What are adenoviruses?
Q1636 :	I read that garlic is the #1 killer of microbes in food. How does garlic kill the microbes?
Q1608 :	When dealing with the plasmolysis of the epidermis cell of an onion; after the cell has been placed in a hypertonic solution and the cell membrane has shrunk away from the cell wall, reducing the size of the cytoplasm, what is in the area between the cell wall and the cell membrane? In other words, what fills the space vacated by the shrunk cytoplasm?
Q1442 :	Can you explain plasmolysis? How does is have an effect on plants?
Q482 :	How does amoebic digestion work?
Q421 :	What are the Hanta and Adeno viruses? How do viruses attack our body?
Q396 :	Is salt/salt water antiseptic? If so, how does it function as one?
Q311 :	My friend told me that the white dust you find on the furniture and tables are actually dead epidermal cells from various organisms, or from us. Is it true??
Q167 :	What changes will take place when mould grow on bread after two weeks?
Q85 :	Are decomposers in the air ? How do they help to decompose and return the nutrients to the earth?
Q61 :	What is an amoeba?
Q54 :	What are antigens?
Q28 :	If both the white blood cells and the bacteria are unicellular, i.e., having the same size, then how do the white blood cells engulf the bacteria?

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