Mitochondria are thought to be the descendants of certain alpha -proteobacteria. They are, however, no longer able to lead independent lives because most

genes originally present on their chromosome have moved to the nuclear genome. Which phenomenon accounts for the movement of these genes?

#Question id: 2583

#Unit 2. Cellular Organization

Following statements are regarding to the microtubules.

A. Tubulin is the major structural component of microtubules

B. Microtubule-associated proteins (MAPs) associate with tubulin and help mediate the assembly, dynamics, and function of microtubules.

C. Free tubulin exists as a dimer in which the α-subunit contains a trapped and hydrolyzable GTP and theβ-subunit binds an exchangeable and nonhydrolyzable GTP

D. All microtubules are nucleated from microtubule-organizing centers (MTOCs), and many remain anchored with their (−) ends there. Thus the end away from the MTOC is always the (+) end.

Which of the following statements is incorrect?

#Question id: 13005

#Unit 8. Inheritance Biology

#Question id: 23970

#Unit 8. Inheritance Biology

#Question id: 1999

#Unit 4. Cell Communication and Cell Signaling

Which of the following would be most beneficial in treating an individual who has been bitten by a poisonous snake that has a fast-acting toxin?

#Question id: 12564

#Unit 10. Ecological Principles