What must a cell do first to divide successfully?
a. duplicate its genetic information
b. increase its ratio of surface area to volume.
c. increase its number of chromosomes

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic. b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy. c. all bacterial enzymes are harmful to humans and the environment. d. microbes create pollutants and toxins that harm the environment.

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.