Microtubules are involved in all of the following EXCEPT the formation of the spindle apparatus during cell division the extension of the lamellopodium of a white blood cell during cell locomotion the formation of flagella used by sperm cells to swim transport of vesicles between organelles of the endomembrane system Microtubules are involved in all of the above. Which of the following is NOT true concerning the chloroplasts and mitochondria and therefore is not evidence to support the endosymbiotic theory? Both are surrounded by a double membrane. Both divide by binary fission. Both contain their own circular genome. Both can survive independently from a eukaryotic cell. All of the above are TRUE, and support the endosymbiotic theory. After PIP2 is cleaved, where will you find DAG and IP3? Both remain in the plasma membrane DAG remains in the plasma membrane, IP3 diffuses through the cytoplasm IP3 remains in the plasma membrane, DAG diffuses through the cytoplasm Both diffuse through the cytoplasm What could you add to your in vitro system (above) to stop the MTs from treadmilling? tubulin-GTP dimers tubulin-GDP dimers GDP Could add either A or B Which of the following is NOT true concerning the chloroplasts and mitochondria and therefore is not evidence to support the endosymbiotic theory? Both are surrounded by a double membrane. Both divide by binary fission. Both contain their own circular genome. Both can survive independently from a eukaryotic cell. All of the above are TRUE, and support the endosymbiotic theory.