What macromolecule is the primary source of energy for living cells?(1 point)
Responses
Carbohydrate
Carbohydrate
Lipids
Lipids
Nucleic acids
Nucleic acids
Proteins
Carbohydrate
Which macromolecule is primarily responsible for storing genetic information in cells?(1 point)
Responses
lipids
lipids
carbohydrates
carbohydrates
nucleic acids
nucleic acids
proteins
Nucleic acids
Which macromolecule serves as the main structural component of cell membranes?(1 point)
Responses
Lipids
Lipids
Carbohydrates
Carbohydrates
Nucleic Acids
Nucleic Acids
Proteins
The macromolecule that is the primary source of energy for living cells is carbohydrates.
The correct answer is carbohydrates. To determine the primary source of energy for living cells, we need to understand the basic functions of different macromolecules.
Carbohydrates are composed of sugars, such as glucose, and are the primary source of energy for cells. They are broken down during cellular respiration to produce ATP (adenosine triphosphate), which is the molecule that provides energy for cellular activities.
To reach this conclusion, we would have eliminated the other options. Lipids are another type of macromolecule, but their primary role is long-term energy storage rather than being the immediate source of energy. Nucleic acids are involved in genetic information storage and protein synthesis, not energy production. Proteins are essential for various cellular functions, but they are not the primary source of energy.
Therefore, the correct choice is carbohydrates.