leopold99 said:
The egg cell merges with a sperm cell forming a new diploid cell.
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Life of Cells -- Poll
- Thread starter JFS321
- Start date
The egg cell merges with a sperm cell forming a new diploid cell.
TheAlphaWolf
Registered Senior Member
OH, it is taken. That's why extremely few spermatozoa reach the egg.
leopold99 said:spurious
when you cut yourself and bacteria enter the wound it gets infected, the body mounts a defense against the invaders. the sperm is an invader but yet no action is taken.
last time I checked I didn't have to cut my wife to insert my penis in her.
TheAlphaWolf
Registered Senior Member
GOD. DAMNIT! my whole post was deleted. I'll summarize it so much you probably won't understand, but whatever i can elaborate later.
your body uses proteins in the cell membrane to identify cells form your own body and foreign cells. Even if the sperm WEREN'T attacked, the selection part would come if you had those proteins, your sperm fertilizes the egg more often. If you don't, your sperm will probably die. There, easily explained.
And speaking of pregnancy, sometimes mothers can have severe allergic reactions to their own babies. Those that do usually end up brain damaged or dead.
Sometimes your own immune system will attack parts of your own body too... an auto-immune response.
and there's a parasite that evolved just like the hypothetical sperm did, and now it has proteins that resemble the host's proteins, and so it is not attacked by the host's immune system.
in short, what you said isn't true, and even if it was it would be a piece of cake to explain evolutionarily speaking.
your body uses proteins in the cell membrane to identify cells form your own body and foreign cells. Even if the sperm WEREN'T attacked, the selection part would come if you had those proteins, your sperm fertilizes the egg more often. If you don't, your sperm will probably die. There, easily explained.
And speaking of pregnancy, sometimes mothers can have severe allergic reactions to their own babies. Those that do usually end up brain damaged or dead.
Sometimes your own immune system will attack parts of your own body too... an auto-immune response.
and there's a parasite that evolved just like the hypothetical sperm did, and now it has proteins that resemble the host's proteins, and so it is not attacked by the host's immune system.
in short, what you said isn't true, and even if it was it would be a piece of cake to explain evolutionarily speaking.
i am a hard core skeptic when it comes to how life came to be on this planet. i must have proof that god exists or that life came from non life. as of yet i have not seen anything that i would call proof either way. yes,yes,yes, logic and common sense logic and common sense aren't foolproof.
TheAlphaWolf
Registered Senior Member
did you run out of things that evolution can't explain already?
TheAlphaWolf
Registered Senior Member
first of all, it doesn't kill the insect. it just paralyzes it. Secondly, what about it? first it layed eggs on a host. then it began paralyzing it. Then it began burrowing and putting it in. Then it began sealing it.
Each step is better than the other, so those that did that survived.
Each step is better than the other, so those that did that survived.
TheAlphaWolf
Registered Senior Member
That's not a fact. What IS a fact is that that has nothing to do with the theory of evolution, and that shows you know nothing about evolution. That's one of the most basic things. That's why darwin wrote the origin of SPECIES, not the origin of LIFE.
now, for the evidence... the miller something (lol I'm bad at names) experiment proved that amino acids, the basic building blocks of proteins, could have emerged in the earth way back when life first formed.
As for how life began, I really can't explain that very well. There are many hypotheses and so I guess I'll have to pick one. Let's see what my book says...
*goes off to get biology book*
AHA here it is. blah blah blah.... 3.8 billion years.... nitrogen.... blah blah... basically two chemists figured out that earth's early atmosphere had been a reducing (electron-adding) environment, in which organic compounds could have formed from simple molecules. The energy came form lightning and intense UV radiation (no ozone remember?). then stanley miller did that experiment where amino acids and other organic compounds were formed. hmm... they apparently also found "complex, oily hydrocarbons"...
bloody murder! "4.5 billion year old chonodrite (something from space) collected in southern austrualia in 1969 contained more than 80 amino acids" :-O modern life only uses 20 or so amino acids! (I had to learn them all... tryptophan, phenylalanine, etc) "remarkably the proportions of these amino acids are similar to those produced by the miller-urey experiment"
and it says they can't possibly be contaminants from earth (the amino acids in the chonsomething) for some chemistry reasons i don't get.
(to be continued)
now, for the evidence... the miller something (lol I'm bad at names) experiment proved that amino acids, the basic building blocks of proteins, could have emerged in the earth way back when life first formed.
As for how life began, I really can't explain that very well. There are many hypotheses and so I guess I'll have to pick one. Let's see what my book says...
*goes off to get biology book*
AHA here it is. blah blah blah.... 3.8 billion years.... nitrogen.... blah blah... basically two chemists figured out that earth's early atmosphere had been a reducing (electron-adding) environment, in which organic compounds could have formed from simple molecules. The energy came form lightning and intense UV radiation (no ozone remember?). then stanley miller did that experiment where amino acids and other organic compounds were formed. hmm... they apparently also found "complex, oily hydrocarbons"...
bloody murder! "4.5 billion year old chonodrite (something from space) collected in southern austrualia in 1969 contained more than 80 amino acids" :-O modern life only uses 20 or so amino acids! (I had to learn them all... tryptophan, phenylalanine, etc) "remarkably the proportions of these amino acids are similar to those produced by the miller-urey experiment"
and it says they can't possibly be contaminants from earth (the amino acids in the chonsomething) for some chemistry reasons i don't get.
(to be continued)
TheAlphaWolf
Registered Senior Member
now abiotic synthesis of polymers:
"researchers have produced amino acid polymers by dripping solutions of amino acids onto hot sand, clay, or rock. The polymers formed spontaneously without the help of enzymes or ribosomes" "such molecules might have acted as weak catalysts for a variety of reactions on early earth"
protobionts:
"while miller-urey-type experiments have yielded some of the nitrogenous bases of DNA and RNA, they have not produced anything like nucleotides"
ALTHOUGH... They have! I read a ... scientific american?... article that said they had created self-replicating RNA in a lab... exclusively with the environment of old earth, and without cheating (using RNA to start with and then making it self-replicating or something like that)
"necessary conditions may have been met by protobionts, agregates of abiotically produced molecules surrounded by a membrane... structure" they "exhibit some of the properties assosiated with life including simple reproduction and metabolism as well as maintenance of internal chemical environment different from that of their surroundings"
"lab experiments demonstrate that protobionts could have formed spontaneously from abiotically produced organic compuonds. for example small membrane-bounded droplets called liposomes can form when lipids or other organic molecules are added to water. (figure 26.4)" (shows a liposome "giving birth" to smaller liposomes, and another one having simple metabolism.)
blah blah "much like the lipid bilayer of a plasma membrane" ... "some liposomes store energy in the form of a membrane potential, a voltage across the surface. such liposomes can discharge the volage in nerve cell-like fashio, such excitability is a characteristic of all life"
if some things come together, like the amino acids and polymers getting inside the liposome "then those droplets could have selectively taken up organic molecules from their environment"
(to be continued)
"researchers have produced amino acid polymers by dripping solutions of amino acids onto hot sand, clay, or rock. The polymers formed spontaneously without the help of enzymes or ribosomes" "such molecules might have acted as weak catalysts for a variety of reactions on early earth"
protobionts:
"while miller-urey-type experiments have yielded some of the nitrogenous bases of DNA and RNA, they have not produced anything like nucleotides"
ALTHOUGH... They have! I read a ... scientific american?... article that said they had created self-replicating RNA in a lab... exclusively with the environment of old earth, and without cheating (using RNA to start with and then making it self-replicating or something like that)
"necessary conditions may have been met by protobionts, agregates of abiotically produced molecules surrounded by a membrane... structure" they "exhibit some of the properties assosiated with life including simple reproduction and metabolism as well as maintenance of internal chemical environment different from that of their surroundings"
"lab experiments demonstrate that protobionts could have formed spontaneously from abiotically produced organic compuonds. for example small membrane-bounded droplets called liposomes can form when lipids or other organic molecules are added to water. (figure 26.4)" (shows a liposome "giving birth" to smaller liposomes, and another one having simple metabolism.)
blah blah "much like the lipid bilayer of a plasma membrane" ... "some liposomes store energy in the form of a membrane potential, a voltage across the surface. such liposomes can discharge the volage in nerve cell-like fashio, such excitability is a characteristic of all life"
if some things come together, like the amino acids and polymers getting inside the liposome "then those droplets could have selectively taken up organic molecules from their environment"
(to be continued)
leopold99 said:a certain wasp burrows into the ground to lay it's eggs. lays it then kills a insect and places it inside then seals the hole. i got plenty more.
Well, that makes evolutionary sense doesn't it to provide fresh food for your little babies.
TheAlphaWolf
Registered Senior Member
RNA world:
first genetic material- probably RNA.
two people found RNA (which plays a central role in protein synthesis" can also carry out a number of enzyme-like catalytic functions. They called 'em ribozymes. they can make complementary pieces of RNA, if they're supplied with nucleotide building blocks. others can remove segments of themselves (self splicing introns), or can act on diff. molecules such as tRNA.
"natual selection on the molecular level has been observed operating on RNA populations in the laboratory. Unlike double-stranded DNA," "RNA molecules assume a variety of 3-D shapes" ..."the molecules thus have both a genotpe and a phenotype" "RNA molecules with certain base sequences are more stable and replicate faster and with fewer errors"
blah blah blah, families of closely related RNA, "occasionally a copying error will result in a molecule that folds into a shape that is even more stable or more adept at self-replication than the ancestral sequence."
blah blah suggested that " rna molecules may have been short virus-like sequences and these sequenes were aided in their replication by random amino acid polymers that had rudimentary catalytic capabilities", and that may have happened in protobionts.
ugh. there's more but i don't feel like typing it all out.
I'm guessing it says something about from then on, with the help of natural selection, RNA could have lost a DNA atom and become DNA, and then ta-da you have your first cells.
there, plenty of evidence that it could have happened.
first genetic material- probably RNA.
two people found RNA (which plays a central role in protein synthesis" can also carry out a number of enzyme-like catalytic functions. They called 'em ribozymes. they can make complementary pieces of RNA, if they're supplied with nucleotide building blocks. others can remove segments of themselves (self splicing introns), or can act on diff. molecules such as tRNA.
"natual selection on the molecular level has been observed operating on RNA populations in the laboratory. Unlike double-stranded DNA," "RNA molecules assume a variety of 3-D shapes" ..."the molecules thus have both a genotpe and a phenotype" "RNA molecules with certain base sequences are more stable and replicate faster and with fewer errors"
blah blah blah, families of closely related RNA, "occasionally a copying error will result in a molecule that folds into a shape that is even more stable or more adept at self-replication than the ancestral sequence."
blah blah suggested that " rna molecules may have been short virus-like sequences and these sequenes were aided in their replication by random amino acid polymers that had rudimentary catalytic capabilities", and that may have happened in protobionts.
ugh. there's more but i don't feel like typing it all out.
I'm guessing it says something about from then on, with the help of natural selection, RNA could have lost a DNA atom and become DNA, and then ta-da you have your first cells.
there, plenty of evidence that it could have happened.
thar she blows!TheAlphaWolf said:As for how life began, I really can't explain that very well.
evolution DOES make sense, but it doesn't expain or better yet i have not seen any proof that evolution got us here. what is it in nature that "things" become alive?spuriousmonkey said:Well, that makes evolutionary sense doesn't it to provide fresh food for your little babies.
TheAlphaWolf
Registered Senior Member
you began talking about the origin of life. I wanted to end your ignorance.
and don't be a retard, i said I can't explain it very well. Hence me quoting the book.
and don't be a retard, i said I can't explain it very well. Hence me quoting the book.
TheAlphaWolf
Registered Senior Member
since you totally ignore everything I say, I'm not even going to reply to that myself. Want evidence? go here: http://www.talkorigins.org/faqs/comdesc/section1.html?evolution DOES make sense, but it doesn't expain or better yet i have not seen any proof that evolution got us here. what is it in nature that "things" become alive?