The phase of mitosis in which the nuclear envelope re-forms is
A. C, which is anaphase.
B. E, which is telophase.
C. B, which is prophase.
D. D, which is metaphase.
E. A, which is prometaphase.
B. E, which is telophase.
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Paramecium is a representative of the
a. apicomplexans. b. amoebozoans. c. flagellated protists. d. euglenoids. e. ciliates.
What links sister chromatids together?
A) centromeres B) chromatins C) actins D) histones E) dyneins
Alexander Oparin hypothesized that living cells evolved from coacervates; what was the "boundary" material of the coacervates Oparin made, and how does this boundry differ from present day liposome membranes?
A. Oparin used a phospholipid bilayer to build the coacervates, it is the same as the bilayer found in present day lysosomes. B. Oparin's coacervates were surrounded by a tight skin of water molecules, the same as present day lysosomes. C. Oparin's coacervates were surrounded by carbohydrates and lipids, unlike present day lysosomes which have a carbohydrate membrane only. D. Oparin's coacervates were surrounded by a tight skin of water molecules; present day lysosomes have a phospholipid bilayer for their membrane. E. Starch was the main component in Oparin's coacervate boundry; lysosomes also use mainly carbohydrates for their membrane.
Which structure do turtles lack?
a. carapace b. jaws c. teeth d. plastron e. keratinized beak