Question

which of the following states the relevance of the first law of thermodynamics to biology?
living organisms must increase the entropy of their surroundings.
photosynthetic organisms produce energy in sugars from sunlight.
the total energy taken in by an organism must be greater than the total energy stored or released by the organism.
energy can be freely transformed among different forms as long as the total energy is conserved.
energy is destroyed as glucose is broken down during cellular respiration.
i dont know yet

Explanation:

The first law of thermodynamics, also known as the law of conservation of energy, states that energy can neither be created nor destroyed; it can only be transformed from one form to another. In the context of biology, this means that energy can be freely transformed among different forms as long as the total energy is conserved. For example, in photosynthesis, light energy is transformed into chemical energy (sugars). In cellular respiration, chemical energy (glucose) is transformed into other forms of energy (such as ATP). The key point is the conservation and transformation of energy, which is exactly what the statement "Energy can be freely transformed among different forms as long as the total energy is conserved" represents.

• The statement "Living organisms must increase the entropy of their surroundings" is related to the second law of thermodynamics (which deals with entropy and the direction of energy flow, stating that the entropy of the universe is always increasing).
• "Photosynthetic organisms produce energy in sugars from sunlight" is an oversimplification. Photosynthetic organisms transform light energy into chemical energy (sugars), they do not "produce" energy (as per the first law, energy is conserved).
• "The total energy taken in by an organism must be greater than the total energy stored or released by the organism" violates the first law (energy conservation).
• "Energy is destroyed as glucose is broken down during cellular respiration" also violates the first law (energy is not destroyed, it is transformed).

Answer:

Energy can be freely transformed among different forms as long as the total energy is conserved.