You discover a single-celled organism that does not have a nucleus, and you also notice that the culture is producing methane. In which group would you place this organism?
A) Kingdom Protista B) Domain Bacteria C) Domain Archaea D) Domain Eukarya
Answer: C
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Which of the following would best describe the results seen in a flower whose sectors have different pigmentation?
A. the result of a germ-line mutation B. the result of the plant being triploid C. the result of the plant being tetraploid D. the result of transposable elements E. the result of a deletion
What is the key concept addressed by the question?
What will be an ideal response?
Neurons that carry messages within the CNS are
a. sensory. b. motor. c. interneurons. d. autonomic.
A marine invertebrate placed into freshwater would have difficulty surviving because:a
it would not be able to obtain food. b. it would have difficulty with buoyancy. c. it would have difficulty with osmoregulation. d. it would not experience the temperature stability found in the oceans. e. it would not be able to obtain oxygen due to the absence of waves in the water.