Defend and explain how FtsZ-type proteins being found in mitochondria and chloroplasts strengthens or weakens the endosymbiosis theory

What will be an ideal response?


Answer: The protein FtsZ, encoded by the gene ftsZ, is specifically involved in prokaryotic cell division. FtsZ-like proteins identified in mitochondria and chloroplasts suggests the FtsZ-encoding gene was first present in prokaryotes and that these two organelles were subsequently developed and maintained in Eukarya. Ultimately this corroborates the ideas of the endosymbiotic theory and seemingly links chloroplast and mitochondrial origins to prokaryotes.

Biology & Microbiology

You might also like to view...

Which of the following activities would be associated with the parasympathetic division of the autonomic nervous system?

A. resting and digesting B. release of both acetylcholine and epinephrine C. increased heart rate D. "fight-or-flight" response E. release of epinephrine only

Biology & Microbiology

The damage caused by parasites may be due to

A. competition for nutrients. B. the physical blocking of organs. C. the direct digestion of host tissue. D. the host's immune response. E. All of the choices are correct.

Biology & Microbiology

Which of the following is not a function of root hairs? a. Increase the uptake of dissolved oxygen

b. Increase the uptake of carbon dioxide. c. Increase the uptake of mineral ions. d. Increase the uptake of soil water. e. Increase surface area of the root system.

Biology & Microbiology

The muscular digestive organ of birds in which food is ground into small bits is the

a. lumen b. gizzard c. crop d. stomach e. cloaca

Biology & Microbiology