Biology Questions and Answers
Photosynthetic beings absorb carbon as
carbon dioxide available atmosphere and the carbon atomsin the (^)
become part of glucose molecules.
During the cellular rbeings part of this oespiration organic material isf these
consumed to generate ATP and in this
process carbothe atmosphere. The other part isn dioxide is returned to
incorporated by the photosynthetic
organisms into thcompose their structure. e molecules thatThe carbon (^)
atoms incorporated into the producers
are transfand again part is liberateerred to the next trod by thephic lev el
cellular part becomes a corespiration nstituent of of the consumethe rs,
consumer body and part is excreted as
uric acid or urea (excretby decomposer bacteria).es later recycle Therefore d
carbon absorbed by the producers in
photosynthatmosphere through cellular esis returns to therespiration (^)
along the food chain until the
decomposers that also libdioxide in their energetic metabolism.erate carbon
Under special conditions in a process
that takes millions oincorporated into organismsf years carbon may also (^)
constitute fossil fuels stored in deposits
under the surface ofuels burn the carbof the planet; as fn atoms return toossil
the atmosphere as carbon dioxide or
carbon monoxide. The burning ofvegetable fuels, like wood, also returns (^)
carbon to the atmosphere.
- What is the main biological
process that consumes carbon
dioxide?
The main biological process that
consumes carbphotosynthesis.on dioxide is
- How is carbon dioxide made
by producers and consumers?
Carbon dioxide is made by producers
and consumers threspiration. rough cellular - What are fossil fuels?
Fossil fuels, like oil, gwhen organic material isas and coal, fo preserved fromrm (^)
the complete action ogenerally buried deep and underf decomposers,
pressure over millions osuch conditions the organic materialf years. Under
transforms into hydrocarbon fuels.
Fossil fuels are a natural rcarbon. When oxygen is present theseeservoir of (^)
fuels can and carbon monoxibe burned and carbode are released inton dioxide
the atmosphere.
- What is the most abundant
form under which nitrogen is
found in nature?
The most abundant nitrogen-containingmolecule found in nature is molecular
nitrogen (Nconstituted of molecular 2 ). The air is 80%nitrogen. - Under which form is
nitrogen fixed by living
beings?
Most living beings cannot use molecular
nitrogen to obtain nitrogen atoms.
http://www.biology-questions-and-answers.com