EVOLUTION
THE ORIGIN OF LIFE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Vents release methane and other gases in bubbles which protected them from UV.
|
|
|
Primordial soup model was never proved to be valid
|
|
|
It has a light source and energy from the vents
|
|
|
High levels of electricity are generated there
|
Detailed explanation-1: -A new theory proposes the primordial life-forms that gave rise to all life on Earth left deep-sea vents because of their “invention” of a tiny pump. These primitive cellular pumps would have powered life-giving chemical reactions.
Detailed explanation-2: -Hot, mineral-rich fluids supply nutrient chemicals. Microbes, some of which eat these chemicals, form the base of the food chain for a diverse community of organisms. These vents are the only places on Earth where the ultimate source of energy for life is not sunlight but the inorganic Earth itself.
Detailed explanation-3: -Hydrothermal vents are the result of seawater percolating down through fissures in the ocean crust in the vicinity of spreading centers or subduction zones (places on Earth where two tectonic plates move away or towards one another). The cold seawater is heated by hot magma and reemerges to form the vents.
Detailed explanation-4: -Scientists suspect that deep hot vents like these might have seeded life on Earth about 4 billion years ago. Some hydrothermal vents release alkaline fluids, which could supply the energy needed to build complex organic molecules.