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In humans and other multicellular organisms, which substance plays a central role as an energy source?

Option 1: water
Option 2: fats
Option 3: carbohydrates
Option 4: proteins

1 Answer

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Final answer:

Carbohydrates, specifically glucose, play a central role as an energy source in humans and other multicellular organisms.

Step-by-step explanation:

Carbohydrates, specifically glucose, play a central role as an energy source in humans and other multicellular organisms.

Glucose is the most common fuel for ATP production in cells, which is the energy currency of the cell.

Excess glucose is stored as glycogen in the liver and skeletal muscles, or converted into fat in adipose cells.