Which of the following lists best describes the features used to classify an organism as a member of domain Bacteria?
A. Unicellular, contains a nuclear envelope and membrane-bound organelles, contains ribosomes but lacks introns
B. Multicellular, lacks a nuclear envelope and membrane-bound organelles, contains introns but lacks ribosomes
C. Unicellular, lacks a nuclear envelope and membrane-bound organelles, contains introns but lacks ribosomes
D. Unicellular, lacking a nuclear envelope and membrane-bound organelles, contains ribosomes but lacks introns
Answer: D
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An E. coli cell without a functional lacI gene is expected to _____
A) never produce ?-galactosidase B) always produce ?-galactosidase C) be unable to transport lactose into the cell D) be unable to metabolize lactose within the cell
Mammals are thought to have evolved from
A. thecodonts. B. therapsids. C. dinosaurs. D. marsupials. E. archosaurs.
A zone of undifferentiated plant cells that can divide rapidly is called a _____
1.cotyledon 2.dermal tissue 3.ground tissue 4.meristem
Resistance to motion
What will be an ideal response?