Match the term to its description. match term definition astronomical body a) a celestial object consisting of a nucleus of ice and a stream of gas and dust galaxy b) a system of stars held by gravitational attraction comet c) an object in space moon d) an astronomical body that orbits around a planet
science..

The correct option is B. a system of stars held by gravitational attraction.

Explanation:

Astronomical objects are all extensive objects that are part of the universe, which can interact with another body by the law of gravity (orbiting it or being orbited), or also if there are no forces that influence it, it remains as a wandering body In the middle of space. For example, some types of celestial objects can be planets, asteroids, natural satellites, stars, etc.

before it leaves the nucleus of a eukaryotic cell, mrna is altered in the following ways: - a cap is added to the 5' end of the mrna molecule; - a poly a tail is added to the 3' end; - introns are removed and exons are spliced together.

i really wish i could answer this question for you