Astudent states that the universe is composed of billions of stars, all making up one galaxy called the milky way. is the student correct? why?

a.) no. the universe is composed of billions of galaxies, each of which contains billions of stars.
b.) no. the universe is composed of hundreds of galaxies, each of which contains millions of star
c.) no. scientists have discovered evidence of only one galaxy, the milky way, and it contains only one solar system. all other stars fall outside the galaxy in space.

the endomembrane system is a series of compartments that work together to package, label, and ship proteins and molecules. in your cells, the endomembrane system is made up of both the endoplasmic reticulum and the golgi apparatus. these compartments are folds of membranes that form tubes and sacs in your cells.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

b.have there own function.