Life expectancy provides a framework for timing about stages and periods of life.
<h3>What does "life span" mean?</h3>
- life span: the amount of time elapsed between an organism's conception and eventual demise.
<h3>The definition of life expectancy:</h3>
- The average number of years a person who reaches a certain age might expect to live is their life expectancy.
- Estimates of life expectancy from the National Center for Health Statistics offer a trustworthy overview of mortality and population health in the United States.
<h3>Why is this crucial?</h3>
- A common metric for assessing a community's general health is life expectancy.
- Age-specific health is measured by life expectancy at birth.
- Trends in mortality are frequently described in terms of changes in life expectancy.
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Answer:
DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.
Explanation:
<span>Proteins are made of Amino Acids, and the sequence of these determine how the protein will fold up and take shape which ultimately determines its function.
The amino acids are held together with peptide bonds, which is a special type of chemical bond.</span>
Bacteria in a unicellular organism that has an archaic structure but is very smart, specifically in antibiotic resistance.
Bacteria have several characteristic or "weapons" to fight antibiotics:
Bacteria has a cell wall which do not allow toxic substances to go in.
Bacteria has transporters which expulse the antibiotic molecules that enter into the cell.
Bacteria has enzymes that break the antibiotic molecules and make them inactive
Bacteria can mutate (change) itself so, and by the way the antibiotic sites, so the molecules cannot fix it. And that is the most problematic.
Bacteria can transmit it resistance mechanism to other bacteria, even if they are not from the same family.
