The proposition that the mitochondria in our cells descended from engulfed bacteria is called the ________ theory
Fill in the blank(s) with correct word
endosymbiont
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With minor exceptions, the genetic code
a. is the same for all living organisms and viruses. b. is specialized so that viruses have a different code from all living organisms. c. differs between different organisms and viruses. d. is the same for all viruses and for single-celled organisms, but is more complex in multicellular organisms. e. has three versions: one for viruses, one for single-celled organisms, and one for multicellular organisms.
Does reproductive cloning always involve somatic cell nuclear transfer? What will be an ideal response?
Leaching is
A) the movement of solutes through soil. B) the breakdown of parent material. C) the gain of cations. D) the loss of leaves from a plant.
Which of the following would you expect to happen if you added EGF to a cell extract from which only the plasma membrane fraction has been removed?
A) cAMP will be produced. B) Gs? will be activated. C) Adenylyl cyclase will be activated. D) Calcium ions will be released. E) None of the above will happen.