Dark matter can be described as matter that
a. does not exert gravitational force but can be detected with light
b. exerts gravitational force and makes up most of the stars and planets
c. cannot be detected and does not emit or absorb light

In cellular biology, what is the definition of the word specialized? te o a. carried across the cell membrane by a specific protein a o b. a structure within a eukaryotic cell that performs a specific function o c. adapted to a specific function or condition es essere beste ser bendere s b tele ee o d. containing unique dna ser eeseen les, e nde este ses see ste submit e