Which of the following is not a piece of molecular evidence supporting the endosymbiotic theory?
a. some organelles divide by fission just like bacteria. b. the mitochondria and chloroplasts are much different in structure than bacteria. c. ribosomes of some organelles are like that of those found in bacteria. d. mitochondrial and chloroplast dna is similar to bacterial dna.

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.