Of the following, which is found in eukaryotes but not found among prokaryotes, such as bacteria and archaea?

A. ribosomes
B. membrane-bound organelles
C. cell membrane
D. single-celled organisms
E. chromosomes


B. membrane-bound organelles

Biology & Microbiology

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Which of these characteristics would most likely discourage self-pollination in a flower with both stamens and pistils?  

A.  many more stamens than pistils B.  long pistils and short stamens C.  long stamens and short pistils D.  wind pollination E.  determinant plants

Biology & Microbiology

Bacteria causes acne by infecting the

1.epidermis. 2.ducts of sweat glands. 3.hair follicles. 4.subcutaneous tissue. 5.ducts of oil glands.

Biology & Microbiology

__________ counters the effects of mutation, natural selection, and genetic drift. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

The hypothesis that life began with the evolution of inorganic compounds into simple organic molecules, macromolecules, and protocells is called what?

A. chemical evolution B. organic chemistry  C. speciation D. Darwinian evolution E. cell theory

Biology & Microbiology