Which of the following is the best definition of a eukaryote?

a) an organism whose cells each contain a membrane-bound nucleus
b) a one-called organism that does not have a cell wall
c) a one-called organism that does not have a membrane-bound nucleus
d) an organism whose cells each have a cell wall

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

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.

In tomato plants, mendel found that the allele for smooth seeds (s) is dominant, while the allele for wrinkled seeds (s) is recessive. which of these punnett squares shows crosses between two plants heterozygous for smooth seeds? i need this to be answered as soon as ! sry the picture is bad quality