Which Requires More Energy

question 22

Multiple Choice

Which requires more energy?

• A)melting a gram of 0°C ice
• B)increasing the temperature of 1 gram of water from 0°C to 100°C
• C)changing 1 gram of 100°C water to 100°C steam
• D)all the same

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Definitions:

Cross-Bridge

The link formed between the actin and myosin filaments in a muscle fiber that generates contraction by shortening the muscle.

T Tubules

A network of tubules within muscle cells that facilitate the rapid transmission of electrical signals for muscle contraction.

Action Potentials

Electrical impulses that are generated by neurons or muscle cells to transmit signals along the cell membrane.

Muscle Fiber

A muscle fiber is a single muscle cell, known for its elongated shape, that contracts to produce movement.