Unit 7: Evolution Flashcards
(125 cards)
Spontaneous Generation
Living things can be made from non living things. Ex: dirt + water = worms
Francesco Redi (1668)
Meat/fly experiment to prove that Spontaneous Generation wasn’t real
Louis Pasteur (1859)
Beaker neck experiment to disprove Spontaneous Generation
Rudolf Virchow
Disproved Spontaneous Generation with powerful microscope and watching cells divide
Disproving Spontaneous Generation proved the 3rd part of cell theory, which is:
Cells all come from other cells
LUCA (what does it stand for and what is it?)
Last Universal Common Ancestor, it was the First cell (origin of life)
Earth is . billion years old. How do we know this?
4.5, radioactivly dating moon rocks
How did water get on earth?
Icy meteorites crashed into earth and created oceans
Scientists believe that life was created on Earth . billion years ago
3.8
Origin of Life: Primordial Soup Hypothesis
The origin of life occurred in a warm little pond (like a hot spring)
Origin of Life: Hydrothermal Vent Hypothesis
The origin of life was created in a warn, water environment, but probably in the deep sea protected from UV radiation (by hydrothermal vents)
Origin of Life: Oparin Hypothesis (Chemical Evolution). Explain it and say what the inorganic products are, what the catalysts are, and what the products are.
Inorganic products (H2O, C, N2, H2, and P) combined with natural catalysts like lightning to create (products) organic molecules like sugars, amino acids, fatty acids, and nucleotides, which later combine to make more complex cells.
Chemical Evolution
A form of natural abiogenesis: the creation of life from non-living materials (carbon, nitrogen, hydrogen, water, p).
Miller-Urey Experiment (1950s)
Proved Primordial Soup Theory in a lab. Created amino acids with inorganic materials in just 3 days
RNA Hypothesis
RNA existed before DNA (DNA is more complex)
Was LUCA Prokaryotic or Eukaryotic
Pro (simpler)
Cynobacteria was the __ type of cell to exist on Earth and it was (Prokaryotic or Eukaryotic). It was also responsible for increasing this element on Earth.
2nd, prokaryotic (still simple), oxygen
Aerobic bacteria was the __ type of cell on Earth. It was good because it did a process called ____ _____ to produce __ ATP instead of _ ATP.
3rd, cellular respiration, 38, 2
Endosymbiosis Theory
Theory that explains the origin of the mitochondria (which came first) and the chloroplast.
Endosymbiosis 1: an aerobic bacteria invaded a larger anaerobic bacteria. The aerobic bacteria involved into the part of the cell called the ______. It is known now as the ancestor of all ____ and ____.
mitochondria, fungi and animals
Endosymbiosis 2: the anaerobic bacteria with a mitochondria engulfed a cynobacteria, which evolved into ______. This cell is now known as the ancestor of all _____.
chloroplast, plants.
Taxonomy
the biological science of classification
Classification
the organization of living things
Classification is _______, and it can be used worldwide
global
