I'm certain 1 micro-second after my brain dies i will cease to exist and never exist again. to me non-existence forever is the ultimate bliss no chance of ever suffering, no pain , no problems no bad memories , the only guarantee of never suffering so badly it's a trillion times worse than one can imagine.
just one of the reasons that i believe it's eternal non-existence is that i read books about what life is what a human is . where did life come from? all life descended from a single cell that evolved 4 billion years ago . some peices of evidence are that this cell and most cells in all life have DNA, the same genetic code which is a langauge for DNA,
Scientists have pushed back LUCA’s origin by hundreds of millions of years.
www.popularmechanics.com
i asked ai this question:
Prompt: name at least 10 same processes in a human brain cell as in a fly brain cell and as in a single cell amoeba for example dNa ,atp , genetic code,, cell membrane , rna others and briefly describe their functions proving all these cells descended from a single ancestor
Response:
Same processes found in human brain cells, fly brain cells, and amoeba cells demonstrate common ancestry by showing a fundamental, shared inheritance from a single ancient organism. The following ten processes are universal to these diverse cells, confirming that they all descended from a common ancestor.
1. Genetic code
Function: DNA, composed of the same four nucleotide bases (A, T, C, and G) in all three cells, stores the instructions for building and operating the organism. This genetic information is copied into RNA (transcription) and then translated into proteins.
Proof of common ancestry: The genetic code is nearly identical across all known life. The fact that a specific three-base sequence (codon) codes for the same amino acid in a human, a fly, and an amoeba is powerful evidence that this system was established in a single ancestral cell.
2. Protein synthesis
Function: This two-step process (transcription and translation) uses the instructions from DNA to construct proteins. Proteins are the workhorses of the cell, carrying out most cellular functions.
Proof of common ancestry: The machinery for protein synthesis—including RNA and ribosomes—is highly conserved and operates in the same fundamental way in all three cell types.
3. Cellular respiration
Function: This is the process cells use to extract energy from nutrients, like glucose, and convert it into a usable form called adenosine triphosphate (ATP).
Proof of common ancestry: The metabolic pathway of glycolysis, the first step of cellular respiration, is shared by virtually all organisms, from amoebas to complex eukaryotes like humans and flies.
4. ATP production and use
Function: ATP is the universal "energy currency" that powers virtually all cellular activities, including muscle contraction, nerve impulses, and chemical synthesis.
Proof of common ancestry: The universal use of ATP as an energy carrier molecule points to its origins in a common ancestor. If different energy systems had evolved independently, there would be no reason for all organisms to share this same molecule.
5. Cell membrane
Function: A semipermeable lipid bilayer surrounds the cell, separating its contents from the outside environment. It controls the transport of materials in and out of the cell.
Proof of common ancestry: The basic structure and function of the cell membrane, including the phospholipid bilayer, is present in all living cells, indicating its presence in the last universal common ancestor.
6. DNA replication
Function: This process accurately copies the cell's DNA before it divides, ensuring that each new daughter cell receives a complete set of genetic instructions.
Proof of common ancestry: The mechanisms and enzymes involved in DNA replication are extremely similar across all domains of life, from single-celled amoebas to human neurons.
7. Regulation of gene expression
Function: Cells must control which genes are expressed and when they are expressed. This ensures that the right proteins are made at the right time.
Proof of common ancestry: While the specific regulatory genes differ, the fundamental methods of gene regulation are conserved. For example, similar families of transcription factors control the development of neurons in flies and humans.
8. Transport across membranes
Function: Cells must move substances like nutrients and ions across their membrane to maintain internal balance (homeostasis) and communicate with other cells. This includes passive and active transport mechanisms.
Proof of common ancestry: The existence of highly conserved transport proteins, such as the sodium-potassium pump (which uses ATP) in human brain cells, demonstrates a shared ancestry with the mechanisms that control water balance in amoeba.
9. Cytoplasm
Function: The jelly-like substance that fills the cell and contains all the organelles and other cellular components.
Proof of common ancestry: All cells have cytoplasm, a basic structural component necessary for housing the biochemical machinery of life. This indicates that the ancestral cell was also a fluid-filled compartment.
10. Reproduction
Function: All organisms, including individual cells, must reproduce to pass on their genetic information. Amoeba and other single-celled organisms use mitosis to reproduce asexually, splitting into two identical daughter cells. In complex organisms, mitosis is used for growth and repair.
Proof of common ancestry: The process of mitosis, used by both amoebas and the cells within humans and flies, is fundamentally the same. The replication of DNA and separation of chromosomes via spindle fibers is a universal process that was inherited from a shared ancestor.
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