What macromolecule is the primary source of energy for living cells?(1 point) Responses Nucleic acids Nucleic acids Lipids Lipids Carbohydrate Carbohydrate Protein
Carbohydrate is the primary source of energy for living cells.
What macromolecule is the primary source of energy for living cells?(1 point) Responses Nucleic acids Nucleic acids Lipids Lipids Carbohydrate Carbohydrate Protein
Carbohydrate is the correct answer.
The macromolecule that is the primary source of energy for living cells is carbohydrates.
The primary source of energy for living cells is carbohydrates. To arrive at this answer, we can review the options and consider the basic biological knowledge about macromolecules and energy sources.
Nucleic acids, such as DNA and RNA, play essential roles in storing and transmitting genetic information, but they are not primarily involved in energy production.
Lipids, including fats and oils, are primarily involved in energy storage rather than energy production. While they can be used as an energy source when carbohydrate supplies are low, they are not the primary source of energy.
Proteins perform various functions in the cells, such as structural support and enzyme catalysis. While they can be broken down into amino acids and used as an energy source in certain circumstances, proteins are not the primary source of energy.
Carbohydrates, on the other hand, are the primary source of energy for living cells. Glucose, a simple carbohydrate, is metabolized through cellular respiration to produce adenosine triphosphate (ATP), which serves as the energy currency for cells. Carbohydrates can be obtained from sources like sugars, starches, and fibers in our diets.
Therefore, the correct answer is "Carbohydrate."