What is the difference between a homologous structure and an analogous structure

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.

What's the waste product of electrons and pyruvate combining in fermentation?  

How do the sperm cells get from the stigma to the ovules?