During which phase of the mitotic cell cycle does assembly of spindle apparatus occur?
A) prophase
B) anaphase
C) telophase
D) metaphase
E) interphase
A) prophase
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At some of the lowest light concentrations, ________ can still grow well due to their ________, which effectively harvest photons for energy
A) green bacteria / antenna pigments B) green bacteria / chlorosomes C) purple bacteria / antenna pigments D) purple bacteria / chlorosomes
In what way are a human and a crab similar?
A. Both have muscles that pull against rigid skeletons. B. Vertebrates and arthropods are deuterostomes. C. Both have closed circulatory systems. D. Both have a continuous growth pattern.
You discover a new sunflower that has blue flowers instead of yellow. When you cross this blue variety with a common yellow variety you get blue and yellow speckled flowers. What type of inheritance pattern does this gene exhibit?
A. sex-influenced dominance B. either incomplete dominance or codominance C. simple Mendelian inheritance D. codominance E. incomplete dominance
Purple nonsulfur bacteria can use ALL of the following as electron donors for photosynthesis EXCEPT
a. H2O. b. H2S. c. H2. d. Fe2+.