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Every living organism are respiring.They respire in order to generate energy
Anaerobic respiration does not involve oxygen.
DNA or Deoxyribonucleic acid is the genetic material of all living organisms and many viruses. It carries the instructions for synthesis of RNA and proteins and controls synthesis of all molecules in an organism. RNA (ribonucleic acid) organizes protein synthesis. It is two strands held together by hydrogen bonds. DNA is synthesized by protein complex known as the replisome. There are several different proteins of the replisome which DNA polymerase bing the chief synthesis protein.
It is hard to state the number of different 'Systems'. Each organ system performs a unique function.
Metabolism
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organ
The eye in of itself is not an organism. An organism is a contiguous living system. The eye would be considered an organ which is a differentiated part of an organism that performs a specific function.
tissue
Every living organism are respiring.They respire in order to generate energy
An organ is a part of an organism's body that performs a function in order to sustain life.
Anaerobic respiration does not involve oxygen.
DNA or Deoxyribonucleic acid is the genetic material of all living organisms and many viruses. It carries the instructions for synthesis of RNA and proteins and controls synthesis of all molecules in an organism. RNA (ribonucleic acid) organizes protein synthesis. It is two strands held together by hydrogen bonds. DNA is synthesized by protein complex known as the replisome. There are several different proteins of the replisome which DNA polymerase bing the chief synthesis protein.
It is hard to state the number of different 'Systems'. Each organ system performs a unique function.
Autotrophs. They are basically organisms that can trap light energy in sunlight to catalyze the production of sugars. They most certainly contain a chlorophyll pigment.
Conversion of inert elemental nitrogen gas into biologically usable form is called nitrogen fixation. Organism that performs nitrogen fixation is Rhizobium Leguminous.