All mammals except the metatherians are viviparous
Indicate whether the statement is true or false.
ANS: F, monotremes
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Recombination between sister chromatids produces new combinations of alleles that may be beneficial to the species
Indicate whether the statement is true or false
All of the following statements about cellular trafficking are true except
A) COPII-coated vesicles move materials from ER to Golgi. B) COPI-coated vesicles move materials from Golgi to the secretory vesicle. C) movement may be mediated by microtubules. D) v-SNAREs occur in vesicles; t-SNAREs occur on target sites. E) tethering proteins mediate docking between target and vesicle.
________ are formed by certain bacteria that convert iron to magnetite; these structures are of interest to ________ because they are despite the fact that they are perfectly formed despite the fact they are only tens of nanometers in diameter.
What will be an ideal response?
Proteolytic processing of eukaryotic proteins involves:a
removal of a portion of the polypeptide chain from an inactive protein precursor. b. the addition of one or more functional groups to a precursor protein. c. the removal of one or more functional groups from a precursor protein. d. removal of histones. e. removing the cap and tail of a newly synthesized protein.