When Chemical, Transport, or Mechanical Work Is Done by an Organism

question 35

Multiple Choice

When chemical, transport, or mechanical work is done by an organism, what happens to the heat generated?

• A) It is used to power yet more cellular work.
• B) It is captured to store energy as more ATP.
• C) It is used to generate ADP from nucleotide precursors.
• D) It is lost to the environment.

---

Definitions:

Cholinesterase

An enzyme that breaks down acetylcholine and other choline esters in the nervous system to terminate synaptic transmission.

Troponin

A protein complex involved in muscle contraction; often measured to diagnose heart attacks.

Sarcolemma

The thin, plasma membrane that surrounds the cytoplasm of muscle cells, critical in muscle contraction.

Graded Fashion

A term referring to a response that varies in degree or intensity, rather than being an all-or-nothing reaction.