Defining Life And Its Origin Flashcards
Biological, often in reference to living components of the environment
Biotic
Non-biological, often in reference to physical factors in the environment
Abiotic
Properties that a complex system has but the individual members do not have
Emergent properties
In space, where life is possible
Habitable zone
What is the Oparin- Haldane Hypothesis?
The organic molecules that form the building blocks of life, such as amino acids, could have formed given the condition that prevailed in primitive earth. Supported by Miller-Urey experiment
Developed after oxygen levels in the atmosphere began to increase, absorbs most of the ultraviolet radiation from the sun
Ozone
A group of abiotically produced organic molecules that are surrounded by a membrane or membrane like structure
Protobiont
A lipid vesicle in which the lipid molecules form a bilayer very similar to a cell membrane
Liposome
The mechanism by which the information encoded in DNA is made into a complementary RNA copy
Transcription
The use of information encoded in the RNA to assemble amino acids into a polypeptide
Translation
An RNA based catalyst that is part of the bio chemical machinery of all cells
Ribozymes
The bio chemical reactions that allow a cell or organism to extract energy from it surrounding, they use that Energy to maintain itself, grow, and reproduce
Metabolism
A substance that has electrons removed
Oxidize
A substance that receives electrons
Reduce
An organism that the rise in extreme environments
Extremophile
