Life Science Flashcards
The study of biology, botany, zoology, microbiology, physiology, biochemistry, environmental science, and other similar studies
Life science
4.6 billion to 541 million years ago
Precambrian
541 to 252 million years ago
Paleozoic era
252 to 66 million years ago
Mesozoic era
66 million years ago to present
Cenozoic era
The appearance of the first simple life forms like bacteria
Precambrian eon
Age of invertebrates
Paleozoic era
“Age of reptiles”
Famous for the rise of dinosaurs
Mesozoic era
“Age of mammals”
Rise of mammals and birds
Cenozoic era
The theory was proposed independently by russian scientist Alexander Oparin in 1924 and english genetics John Haldane in 1929.
Primordial soup theory
The theory suggest that life began when frequent lightning flashes produced biomolecules.
Electric spark theory
The theory suggest that life began as a structured patterns in days that self replicated during cycles of crystal growth and fragmentation.
Crystalline ancestry theory
The theory proposes that life on earth may have originated in the mineral-rich water and chemical soup around hydrothermal vents on the ocean floor
Deep sea vent theory
The theory proposes that life on earth may have started in an ic environment and was proposed by researchers in 1994
Chilly start theory
The theory suggest that the first form of life was based on chemical reactions that involve over time, rather than replication.
Metabolism first theory
