3,879 reputation
1436
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location Canary Islands
age
visits member for 2 years, 7 months
seen Jul 23 at 19:29

Research astrophysicist. Particularly interested in astrobiology, paleobiology, extremophiles, origin of life studies and studies of ageing. Working toward a biochemistry degree when I have time.


Feb
21
comment Do plant-animal cross races exist?
You might want to change your question title to : Are there animals that can do photosynthesis? The term "race" doesn't have much meaning in biology.
Feb
17
comment Is there life on other planets and if so how frequent?
One thing is whether a planet is in a habitable zone - something we can begin to estimate with exoplanet observations - another is to know the probability of life evolving on the planet. Until we start to see evidence for extraterrestrial life (e.g. biosignatures) this is still a complete guess.
Feb
17
comment What kind of microscope should be used to view biological structures (such as spores) roughly 5 µm in length?
In this price range, I would avoid anything with very high magnifications > 600x or so. You'll find it very difficult to get enough contrast to see any details.
Feb
16
comment Cell Respiration and Oxidative Phosphorylation
For me, ATP synthase is one of the most remarkable features of the cell. Beautiful.
Dec
18
comment Evolution in 37 years, is it possible?
Interesting post, but your definition of evolution is incorrect. Evolution is not organismal adaptation. Most organisms can adapt to changing environments within certain parameters. It would be more accurate to say that evolution is the generational change of inherited characteristics (through processes such as natural selection.)
Dec
12
comment What vegetation would thrive in the Martian atmosphere?
Check out the answer here biology.stackexchange.com/questions/1242/…
Oct
31
comment Can Bioluminescence drive photosynthesis?
Also, what are you going to do with the methane?
Oct
31
comment Can Bioluminescence drive photosynthesis?
Sounds like an interesting project. But why not just expose the algae to sunlight?
Oct
26
comment Filamentous algae - what exactly am I looking at?
pond slime to 70's rock - i love it.
Oct
26
comment Filamentous algae - what exactly am I looking at?
thanks @shigeta. I currently don't have a camera attachment so I had to hold my SLR up against the eyepiece!
Oct
25
comment Is there any documented evidence for suicide among vertebrates other than humans?
I did say vertebrates since that was the original discussion I had, but evidence for "suicide" in any organism is interesting..
Oct
16
comment Should we be looking for extra-terrestrial life on comets?
thanks @terdon that is what I meant! mind you, they found some very interesting inorganic compounds too ...
Oct
16
comment What elements are a possible basis for life?
For the time being, I think the best bet is to regard things as life if they look like life as we know it on Earth. It is dreadfully anthropocentric but at least its a starter until we really understand what separated living from non-living.
Oct
10
comment What is the oldest example of DNA identified?
My understanding was that DNA in non-living matter had lifetimes of thousands of years, not millions. How did such ancient DNA manage to be preserved? Does this result hold up?
Oct
3
comment How are there multiple varieties of the potato?
This question is more interesting that first meet the eye (ho-ho).
Sep
28
comment What reasons allow for women to outlive men?
Ahh! That makes sense then :-) Even so, it would be interesting to know if they accounted for things like syphilis which might make sense in the context of this study. OK, I should read the paper ...
Sep
28
comment What reasons allow for women to outlive men?
Very interesting though!
Sep
28
comment What reasons allow for women to outlive men?
Are they really saying that the lifespan of their control samples (i.e. men with testes) was only 51-56 years? That is worryingly low - I suspect that something else may be going on there .. ?
Sep
28
comment Is there life on other planets and if so how frequent?
Giant reservoirs of water have not been found on Europa, although it is hypothesized that there may be a subsurface water ocean due to the way that the surface ice has deformed. However, I do agree that Europa is an exciting target. Enceladus also, which has been seen to have cryovolcanos spurting out water-ice. I suspect Mars is too dry and cold. We'll see.
Sep
27
comment What elements are a possible basis for life?
It's an interesting question. However I suspect we'll be finding lots of weird carbon-based slime rather than anything silicon based. However, it's a big Universe out there!