By showing how living things get energy from another.
Correct answer: A) A small structure within the cell that serves specialized functions
Organelles are small,specialized structures found inside the cell which perform a specific task and help in the functioning of the cell.
Organelles are known to be found in all the eukaryotic cells. There they serve a essential and specialized functions such as making proteins, getting rid of waste, harvesting energy etc.
Example: Mitochondria, endoplasmic reticulum, nucleus etc.
D) Mitochondria because muscle cells require more ATP (energy).
Explanation:
cianobacteria is célula procariota?