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Did organisms that require oxygen exist before photosynthetic organisms?
Wiki User
∙ 12y ago
It would be impossible for oxygen requiring organisms to exist before photosynthetic organisms because there was not oxygen in the atmosphere for these organisms to breathe. Photosynthetic organisms take carbon dioxide and water in and create oxygen as waste. Before these photosynthetic organisms existed there was not enough or any oxygen in the atmosphere for organisms requiring oxygen to survive.
Wiki User
∙ 12y ago
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The rise of photosynthetic organisms did not?
The rise of photosynthetic organisms will not ever lead to a decrease in oxygen. The use of these organisms will always lead to an increase.
What organisms require oxygen for respiration?
Aerobic organisms require oxygen.
Atmospheric oxygen increased after the evolution of photosynthetic prokaryotes?
There is an increased amount of oxygen after completion of the photosynthetic process.
How does photosynthesis beniffit heterotrophs?
By providing an energy source for them. The majority of heterotrophic organisms get their energy by eating photosynthetic organisms or indirectly, by eating things which themselves eat photosynthetic organisms.
How did early photosynthesis organisms change Earth's atmosphere?
Photosynthetic bacteria produced oxygen, and as they continued to colonize the earth they produced more oxygen. Eventually all the oxygen sinks became saturated, and this resulted in the Great Oxygenation Event (GOE). Aerobic organisms would late evolve and utilize the free oxygen.
The rise of photosynthetic organisms did not?
The rise of photosynthetic organisms will not ever lead to a decrease in oxygen. The use of these organisms will always lead to an increase.
Why do scientists think that the first organisms did not need oxygen to survive?
Breathable oxygen, or O2, did not exist in large quantities in the atmosphere until after the evolution of photosynthetic organisms. Hence, early organisms had to have an anaerobic metabolism, or one that did not require oxygen. However, compounds containing oxygen, such as water, have always been necessary to organisms.
What organisms require oxygen for respiration?
Aerobic organisms require oxygen.
What effect did photosynthetic cyanobacteria have on earth's environment?
Photosynthetic cyanobacteria were the first organisms to produce oxygen. The effect of their oxygen production was that the earth became an environment which was suitable for life.
Atmospheric oxygen increased after the evolution of photosynthetic prokaryotes?
There is an increased amount of oxygen after completion of the photosynthetic process.
Do hammerhead sharks require oxygen?
Yes, they are aerobic organisms so they require oxygen.
What is the connection between organisms in a stream and the dissolved oxygen level?
Organisms in streams need oxygen to live when lacking dissolved oxygen it will kill these organisms. edit: unless the organisms in the stream are photosynthetic, in which case they will increase the oxygen levels. however, by far, most organisms in a stream are not photosynthetic and oxygenation occurs solely through aeration and surface area dissolving from the air. so, to answer the question, organisms (most organisms which aren't plant-based photosynthetic organisms) decrease the amount of oxygen in a stream. edit: a flowing stream has turbulence which helps aerate the water, increasing dissolved oxygen. In contrast, stagnant water tends to be low in dissolved oxygen, except near the surface. Multicellular animals (like fish) need a good supply of dissolved oxygen to thrive.
How might the photosynthetic organisms counter the greenhouse effect?
Photosynthetic organisms counter the greenhouse effect. This is because plants use carbon dioxide and turns it into oxygen instead. Carbon dioxide is causing the greenhouse effect.
What group of prokaryotes are organisms that require a constant supply of oxygen?
organisms that require a constant supply of oxygen from the prokaryotic group are called "obligate aerobes
How does photosynthesis beniffit heterotrophs?
By providing an energy source for them. The majority of heterotrophic organisms get their energy by eating photosynthetic organisms or indirectly, by eating things which themselves eat photosynthetic organisms.
What must photosynthetic bacteria provide before eukaryote could evolve?
Oxygen Production.
What must photosynthetic bacteria provide before any eukaryotes could evovlve?
Free Oxygen.
