Question 5 of 10 Which best describes the Big Bang Theory?
A. All matter in the universe has expanded outward from a single
point.
B. The universe began with one star, which split into many smaller
stars.
O C. The universe has stayed the same size ever since the Big Bang.
SUBMIT

A. All matter in the universe has expanded outward from a single point.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.