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9

No, Naegleria fowleri is a free-living excavate form of protist that lives in warm fresh water. Fowleri finds its way into the brain by eating through the olfactory neurons in the nose where it multiplies itself greatly by feeding on nerve tissue. Once it penetrates the nervous tissue, fowleri's feeding results in significant necrosis of and hemorrhaging ...


7

Plasmodium falciparum (the main causative agent of malaria) and other Plasmodium species have a very complex life cycle, with stages in the female host Anopheles mosquito, in the human liver, and in the human circulatory system, where it primarily resides in the erythrocytes (red blood cells, or RBCs): During a blood meal, a malaria-infected mosquito ...


6

Found it. It's a Sarcodes or snow plant: http://en.wikipedia.org/wiki/Sarcodes


5

In my own opinion, I would not classify this as parasitism, as more unpalatable species are eaten with Batesian mimicry (and eating causes death). Parasitic organisms often do not kill the host, whereas in this case, it does. However, you are correct in stating that a unpalatable species with aposematic coloring is detrimented by the presence of a palatable ...


3

No. Although malaria is transmitted through the saliva of a female Anopheles mosquito, it stays in the bloodstream and doesn't pass over to the saliva of humans (otherwise it probably would be transmittable via humans directly). Once the parasites travel to the liver, it infects and bursts hepatocytes after reproducing (asexually). The burst cells then ...


3

Short answer: 50-60 µM O2 is ok; 80 µM is toxic. Giardia lamblia (aka intestinalis) is a microaerophilic intestinal parasite. According to: Lloyd et al. (2000) The microaerophilic flagellate Giardia intestinalis: oxygen and its reaction products collapse membrane potential and cause cytotoxicity. Microbiology 146: 3109 - 3118 Giardia ...


3

You could have asked a similar question about splicing. The function of RNA editing seems to be similar: it's one of the ways to trigger production of alternative transcripts and proteins given the same DNA sequence. The question is discussed, for example, in this review. The authors describe different known effects of alternative RNA editing: Amino-acid ...


1

In a 1987 article "Nonenteric Infections Acquired through Contact with Water", the author mentioned that "Infection of the ears, throat, respiratory tract, and cornea are also encountered" by virulent strains of Acanthamoeba and Naegleria fowleri. The only reference that implicates Naegleria fowleri is this one, but it doesn't mention modes of infection. ...



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