Which of the following properties are shared by both bacteria and archaea?
A. Method of DNA compaction
B. Ester linkages in fatty acids
C. Single, circular chromosome
D. Cell wall polysaccharides
Answer: C
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Which of the following examples or elements of culture is uniquely human? Select all that apply
A. an individual learning by imitation from another member of its own species B. an individual teaching another individual of its own species by tailoring the information available to the individual being taught C. regional variation in tool use D. language E. None of these are uniquely human.
Which type of chromosome deletion is caused by two concurrent chromosome breaks (rather than a single break)?
A) acentric deletion B) microdeletion C) terminal deletion D) partial deletion E) interstitial deletion
________ is the name given to the motor neurons that carry information away from the brain or spinal cord
Fill in the blank(s) with correct word
Aphids are small insects that insert their mouthparts into a plant to obtain phloem sap. Which would be the best way to determine if aphids must actively draw phloem sap into their digestive tract or if hydrostatic pressure in the phloem tube could force
the sap into them? A) Isolate a phloem tube from a plant, allow an aphid to insert its mouthparts, and see if the aphid can still take up sap from it. B) Measure relative rates of sugar manufacture in leaves with and without aphids. C) Insert mouthparts removed from an aphid, without including the digestive tract, into phloem sap and see if sap keeps flowing through them.