[Campbell Biology P.1160] According to the text, what is true about the proteins involved in ... | Practice Question

According to the text, what is true about the proteins involved in sensing Earth's magnetic field?

  • A: Both proteins bind iron to detect the magnetic field.
  • B: One protein is sensitive to electromagnetic radiation, and the other binds iron.
  • C: These proteins are only found in monarch butterflies and beluga whales.
  • D: They are primarily involved in detecting electric fields generated by prey.

Explanation

The text states: 'In 2015, researchers identified a pair of proteins that appear to act as a sensor for the Earth's magnetic field in many animals that can orient to it, including monarch butterflies, pigeons, and minke whales. One of these proteins binds iron; the other is a receptor that is sensitive to electromagnetic radiation.'