ill mark brainliest

explain how muscles “know” they are supposed to move?
explain why it is possible for you to extend your arm all the way, and then curl it right back up toward your body, if muscles can only pull?
about how many muscles do you have in your body?

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.