bio and abiogenesis/ life Flashcards
differ between abiogenesis and biogenesis
-abiogenesis is a theory, a natural process that leads to evolution of life forms from non living matter, believes in spontaneous generation.
-biogenesis is the truth, the development of life forms from pre-existing life, synthesis of chemical compounds or structures in living organisms.
what is “spontaneous generation”
the belief that the change of non living life forms to living life forms is spontaneous.
who are the people of abiogenesis and what theories and experiments did they provide?
- ARISTOTLE, fish and frogs come from mud/ flies come from rotting meat
- VAN HELMONT, mice can be created from from grains of wheat and a dirty shirt,
- NEEHAM, killed microbes in container of meat broth, later microbes reappeared.
who are the people of biogenesis and what theories and experiments did they provide?
1.REDI, placed meats in open jars, repeated with closed jars, flies only in open jars, repeated with mesh over top to allow active ingredient, same result
2. SPALLANZANI, boiled meat broth and killed microbes open jar got them back closed didn’t.
3.PASTEUR, boiled meat broth in swan flask to allow air flow, no microbes appeared, they were all caught in bend of the flask.
what is biology
study of life
how life started
study of life processes
anatomy of living things
relationships between living and their environments
3 types of branches of biology
microbiology, microscopic life
zoology, animals
botany, plants
what are the 8 characteristics of life
- one or more cells
- reproduces
3., responds to stimuli - requires energy
- maintains homeostasis
- adapts and evolves
- grows and develops
- life span
why were some biogenesis experiments deemed invalid during their time
they didn’t allow the active ingredient, which is air flow
what is cell theory
cells make up the structure of all living things
cells are the basic units of life
cells come from pre existing cells
