How is the structure of a unicellular organism different than the structure of a multicellular organism? how does this affect function?

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.

Why do we perceive objects as retaining their brightness under different lighting levels?