Multiple choice

A chemical compound, produced by living cells, circulates in the body fluids and produces a specific effect on the activity of the cells of the target organs away from its point of origin. Which of the following is the chemical compound?

  1. Enzymes

  2. Neurotransmitter

  3. Hormone

  4. Drugs

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hormones are produced by living cells, released into blood and act on a site near or distant from the site of production. They can also affect any organ in the body.