Homologous recombination has been observed in
A) Archaea.
B) Bacteria.
C) Eukarya.
D) Archaea, Bacteria, and Eukarya.
Answer: D
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The term amphipathic describes the characteristic of some molecules that have ________.
A) two polar regions B) only a single polar region C) both a polar and a nonpolar region D) no polar regions E) two nonpolar regions
What type of lipid has four carbon rings and no tails?
a. fats b. steroids c. waxes d. phospholipids e. triglycerides
What is not an ecological role of mangals? a. They stabilize sediments with their root system
b. They provide detritus for food chains to occur. c. They are direct subjects of herbivory. d. They serve as a nursery and refuge to animals.
Cell-mediated immunity most directly involves cells attaching infected and/or cancerous cells.
A) B B) T C) Macrophage D) MHS