Question

The prefix retro- means _______.

1) reverse
2) return
3) result
4) backward, behind
5) below, beneath

Answer 1

The prefix retro- indicates a movement backward or something being located behind, as seen with terms like retrograde rotation, which describes the movement of certain planets in the solar system.

Step-by-step explanation:

The prefix retro- means backward or behind. It is commonly used in various English words to indicate that something is moving in the opposite direction of the usual or that it pertains to things in the past. For example, the term retrograde rotation refers to a celestial body rotating backward from the direction that most objects in the solar system revolve and rotate. This is observed in planets like Venus and Uranus. Other examples include retraction, which implies moving something back or inwards, and retrovirus, a type of virus that replicates in a host cell by reverse transcription.