During prokaryotic cell division, two chromosomes separate and are distributed to the two ends of the
cell by ____.
a. the action of the mitotic spindle
b. an unknown mechanism
c. attachment to actin
d. attachment to separating membrane regions
e. formation of a newly made cell wall
B
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Which statement is true?
a. The ability to taste salty allows animals to find high-caloric food. b. Umami was the first taste to be identified by scientists. c. Both the senses of taste and smell create flavor perception. d. Animals are unable to accurately identify odors without taste receptors.
According to the theory of island biogeography, which of the following is not true?
1.Large islands have higher immigration rates than small islands. 2.Large Islands have higher extinction rates. 3.At equilibrium, islands that lie closer to a mainland have more species than more distant islands. 4.Islands near the mainland have higher immigration rates than distant islands. 5.Distance does not affect extinction rates.
Provide a 1-sentence explanation of how each of the following structures can be used to propagate
plants asexually: suckers, corms, stolons. BONUS: Identify one representative plant that is capable of each type of reproduction identified What will be an ideal response?
Your friend has just joined a lab that studies vesicle budding from the Golgi and has been given a cell line that does not form mature vesicles
He wants to start designing some experiments but wasn't listening carefully when he was told about the molecular defect of this cell line. He's too embarrassed to ask and comes to you for help. He does recall that this cell line forms coated pits but vesicle budding and the removal of coat proteins don't happen. Which of the following proteins might be lacking in this cell line? (a) clathrin (b) Rab (c) dynamin (d) adaptin