Love all of your biology lessons dr, very informative and interesting. I have noticed on wikipedia however that "Saccharomyces cerevisiae is proven to be an opportunistic human pathogen, though of relatively low virulence." and is cited by Murphy, Alan; Kavanagh, Kevin (June 15, 1999). "Emergence of Saccharomyces cerevisiae as a human pathogen. Implications for biotechnology". Dont mean to nit-pick, just thought you should know as your slide says non-pathogenic.
I wonder that since molds are microscopic(or at least I think so), why their magnified images look terrifying(at least to me). In their real size molds are visible but they are more disgusting than terrifying. And the form we see is much different. I get the disgusting part. The prehistoric humans who were disgusted by molds were likely to not eat them and generally stay away from them. Hence less exposure to certain pathogens. Less disease. More likely to survive. Evolution may have selected positively for that. But we can not see molds in their magnified forms. How we are supposed to develop fear response from viewing just an image of a mold? And not just disgust response like "Ugh, I shouldn't eat that thing, probably should not touch it and better stay a little bit away from It in case I accidentally sniff a particle of it", but more like "This thing is dangerous, it may attack me and somehow kill me" like a large predator may do or a reptile, maybe an insect also. If molds are somehow a pretty large example then, bacteria or viruses. We certainly can not even see them but I find terrifying most magnified images of them. I have 2 hypotheses. The first is kind of dull: 1) Maybe these microorganisms just resemble other larger organisms which are also potentially dangerous and can be seen relatively well by humans. Like spiders for example. Kind of homology. But the second one is more intriguing. 2) Maybe the selection of that trait happened much earlier in evolution to some very small species which happen to be ancestors of humans, and the relative size between them and the fear-inducing organisms is comparable with that between humans and spiders. Or probably the difference in the sizes is even less. But the second one is too strange and I immediately see the problems with vision. Maybe for molds, it may work. But for bacteria and viruses, it won't. Certainly, If spiders are the size of viruses, humans would be the size of microorganisms on themselves. And such a small organism with a good enough vision to detect such specific forms, I think is extremely unlikely.
If infants immune systems are not functioning optimally yet, why do we vaccinate? Is that risky, maybe better to wait a few months? Had I known this back then, I think I would have waited.
Thanks looking forward to the lessons
Love all of your biology lessons dr, very informative and interesting.
I have noticed on wikipedia however that "Saccharomyces cerevisiae is proven to be an opportunistic human pathogen, though of relatively low virulence." and is cited by Murphy, Alan; Kavanagh, Kevin (June 15, 1999). "Emergence of Saccharomyces cerevisiae as a human pathogen. Implications for biotechnology".
Dont mean to nit-pick, just thought you should know as your slide says non-pathogenic.
The alcohol is also functioning as a solvent
I wonder that since molds are microscopic(or at least I think so), why their magnified images look terrifying(at least to me). In their real size molds are visible but they are more disgusting than terrifying.
And the form we see is much different.
I get the disgusting part. The prehistoric humans who were disgusted by molds were likely to not eat them and generally stay away from them. Hence less exposure to certain pathogens. Less disease. More likely to survive. Evolution may have selected positively for that.
But we can not see molds in their magnified forms. How we are supposed to develop fear response from viewing just an image of a mold? And not just disgust response like "Ugh, I shouldn't eat that thing, probably should not touch it and better stay a little bit away from It in case I accidentally sniff a particle of it", but more like "This thing is dangerous, it may attack me and somehow kill me" like a large predator may do or a reptile, maybe an insect also.
If molds are somehow a pretty large example then, bacteria or viruses. We certainly can not even see them but I find terrifying most magnified images of them.
I have 2 hypotheses. The first is kind of dull:
1) Maybe these microorganisms just resemble other larger organisms which are also potentially dangerous and can be seen relatively well by humans. Like spiders for example. Kind of homology.
But the second one is more intriguing.
2) Maybe the selection of that trait happened much earlier in evolution to some very small species which happen to be ancestors of humans, and the relative size between them and the fear-inducing organisms is comparable with that between humans and spiders. Or probably the difference in the sizes is even less.
But the second one is too strange and I immediately see the problems with vision. Maybe for molds, it may work. But for bacteria and viruses, it won't. Certainly, If spiders are the size of viruses, humans would be the size of microorganisms on themselves. And such a small organism with a good enough vision to detect such specific forms, I think is extremely unlikely.
You are such an angel
Amazing
Ррквав
If infants immune systems are not functioning optimally yet, why do we vaccinate? Is that risky, maybe better to wait a few months? Had I known this back then, I think I would have waited.
Can Rhizopus produce conidiospores ?
sporangiospores because the spores are encapsulated
@@nassunajacqueline8074 thank you very much i didn’t actually think that someone would answer the question
@@nassunajacqueline8074 but what if the spore goes meiosis in return to mitosis