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Numbers in Anatomy and Physiology 2

1. Number of different proteins in humans. Note: this is a difficult question. The old idea was "one gene-one protein" - but that is a very old concept. A newer concept of genes and proteins (and protein modification) indicates that there are over 1,000,000 different proteins in a human. I'm still trying to get a biochemist to commit to a realistic number. I have heard "over a million" a few times. A better question here would be "estimate how many genes are in the human genome?"
2. Number of DNA bases that code for one amino acid in the process of protein synthesis.
3. Number of minutes without oxygen... before trouble. (generalization!)
4. Number of DNA molecules in an egg cell.
5. Number of days without food... before trouble. (generalization!)
6. Number of chromosomes in a normal body cell.
7. Number of days without water... before big trouble.
8. Number of different amino acids in humans.
9. Number of genes in one set of DNA molecules.
10. Number of DNA molecules in a normal body cell.

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Note

There has been a change due to findings related to the Human Genome Project. It use to be thought that there were between 50,000-100,000 genes in the human genome. The number has been revised to around 30,000.

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