Chemical Evolution, Cell Theory and Spontaneous Generation Flashcards
Define chemical evolution
the origin of life from non-living or inorganic matter - how have chemicals adapted/changed through time?
What is a peptide bond?
a chemical bond that is formed by joining the carboxyl group of one amino acid to the amino group of another (peptide bonds form through dehydration synthesis)
What is a dehydration synthesis reaction?
the creation of larger molecules from smaller monomers where a water molecule is released. - two molecules joined together by removing water
What are the PRODUCTS of a peptide bond or dehydration synthesis?
a molecule of water and protein
What are the 3 parts of The Cell Theory?
1.All living organisms are composed of one or more cells.
2.A cell is the basic structural and functional unit of living organisms.
3.All cells arise from pre-existing cells.
What did Robert Hooke do?
he named the cell. saw a plant cell and noticed the cell wall and saw that they looked like jail cell.
What did Anton van Leeuwehoek do?
- he discovered bacteria
- invented his own microscope
What did Matthew Schleiden do?
- realized all animals are made of cells
- put together cell theory
What did Theodor Schwann do?
-realized all plants are made of cells
What did Rudolf Virchow do?
helped prove all cells come from pre-existing cells
What is Endosymbiotic Theory?
theory of how eukaryotic cells evolved from prokaryotic cells
What are two pieces of evidence that support Endosymbiotic Theory?
- Mitochondria have their own cell membranes, just like a prokaryotic cell does.
- Each mitochondrion has its own circular DNA genome, like a bacteria’s genome, but much smaller.
