The hypothesis that certain eukaryotic cell structures may have evolved from a prokaryotic cell being engulfed by a eukaryotic cell is called the
A) endosymbiont hypothesis.
B) prebiotic evolution hypothesis.
C) living intermediate hypothesis.
D) spontaneous generation hypothesis.
E) protocell hypothesis.
A
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You are conducting a genetic screen using Caenorhabditis elegans embryos to isolate mutations affecting anaphase (A). Therefore, you need to look for embryos in which
A. the centromeres do not move toward the poles. B. the poles do not move apart. C. the spindle apparatus does not disassemble. D. sister chromatids are mismatched and therefore fail to separate.
A condition called ____________________ results in individuals having both male and female sexual structures at different times in their lives
Fill in the blank(s) with correct word
Which of the following is the most important natural auxin?
a. abscisic acid b. gibberellic acid c. jasmonic acid d. indoleacetic acid e. salicylic acid
Which type of P-type ATPase would you expect to find is defective in a novel cell line in which you observe that maintenance of the phospholipid asymmetry in the plasma membrane is impaired?
A) type 1 B) type 2 C) type 3 D) type 4 E) type 5