Scientists currently theorize that:
A. it is possible to synthesize a simple cell similar to LUCA.
B. cells from the Archaea group are most similar to LUCA.
C. cells from the Bacteria group can be mutated so they revert to LUCA.
D. evolution created LUCA from the Archaea group.
A
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a. active b. inactive c. cloned d. unregulated
Opsonizing antibodies must be against ________ components if they are to effectively stimulate phagocytosis.
A. internal B. phagocytic C. protein D. surface
If the NMDA receptor is removed
a. long-term potentiation doesn't occur. b. short-term memory is not converted. c. long-term memory occurs but is shortened. d. short-term memory is lengthened. e. long-term potentiation doesn't occur and short-term memory is not converted.
An onion bulb is made up of ________ that are specially adapted for food and water storage
A) branches B) stems C) flowers D) roots E) leaves