Moderator Note:
Posts on gut microflora moved to new split thread.
Gut Microflora
Posts on gut microflora moved to new split thread.
Gut Microflora
How far back? To when there were a lot of species in that genus? Back to the common ancestor of ungulates?Do you think that you could go back in time and predict the evolution of the giraffe?
You mean mutations aren't chaotic.After all, mutations aren't random.
I believe I've heard of people picking up viral infections when they open up a tomb that's been sealed for thousands of years.I wonder if there is one overriding difference between these two general categories of viruses?
I know that HIV has lipid envelope, could this be the cause? How many viruses do have lipid envelopes?
The virus I had in mind was the canine parvovirus. It, supposedly, can survive for years in its inert form.
To me though, chaos suggests unpredictability, zero expectation, background noise, and "randomisation".invert_nexus said:Chaos suggests complexity.
Not even close, is a bunch of chemicals anywhere near equivalent to yeast.invert said:Yeast, after all, is nothing but a bunch of chemicals.
I would say mutations are an inherent property of genetic material, and its maintenance (overall entropy).invert_nexus said:Mutations are accidents in transcribing.
Right, they need a host cell in order to replicate.Asguard said:Virus's cant replicate independently of a hoast cell
Vkothii said:Sorry? What does that mean? What criteria are you talking about?
Viruses don't produce any of the materials required for their reproduction, nor do they supply any of the energy. So, they are lacking some of the criteria you used in your own definition of life.Life is the set of all things that are capable of persistence, via metabolism and reproduction of material that is required to maintain their structure, and also represent that structure (again as structure). The structures are actively maintained and this requires energy.
Viruses invade a cell. How do they invade a cell?Idle Mind said:Viruses don't produce any of the materials required for their reproduction, nor do they supply any of the energy.
Oh great. I thought we'd answered some question. But we've only "discussed it" huh?Idle Mind said:We've already discussed how viruses invade cells, so we don't need to take a step or two backwards and discuss it again.
That's exactly right, so what are we discussing?Last time I asked, it went something like: "a virus doesn't do anything about getting into a cell, it's passive chemical interactions".
An enzyme transcribing DNA is a passive chemical reaction too. A cell metabolising is able to because of passive chemical reactions; control of chemical reactions in a cell is due to passive chemical reactions; regulation of gene transcription is passive chemical reactions "acting" to regulate gene expression. All of these enzyme reactions can be carried out individually in vitro, outside a cell.
"Regulate" is just a word to describe what a cell does when enzymes and signalling molecules interact with other enzymes.Idle Mind said:"Invade" is just a word to describe what a virus does when it's glycoproteins interact with those on the cell surface membrane.
What does "dead or alive" mean?1) Are viruses dead or alive?
The same place bacteria came from? The bacteria place.2) Where did viruses come from?
The virii evolve much the same way everything else does - including bacteria of course.3) Do viruses evolve?
Define "purpose"?4) Do viruses behave a)with purpose
Why are you asking me? I'm not telling you anything, remember?b)randomly c)chaotically d) some of the above e)all of the above?
Why are you asking me? I'm not telling you anything, remember?
LOL! You are too funny."Regulate" is just a word to describe what a cell does when enzymes and signalling molecules interact with other enzymes.
Alive is just a word to describe what a cell does when all its enzymes and chemicals interact, and DNA gets transcribed, and maintained. Oh yeah, it mutates, too. But mutation is just a word.
Watch out for that big concrete barrier as you go round the semantic circle.
LOL! You are too funny.
What do you dudes want, exactly?
I answered 2 out of 4.
So who's going to answer the other two?
Isn't this your thread? You don't seem happy with the way the discussion has gone, or the way we have responded. Perhaps it would be more useful if you outlined what you wanted out of this.What do you dudes want, exactly?
I answered 2 out of 4.
So who's going to answer the other two?