Unique features of animals include ingesting their food, having a cell wall, and the ability to move at some point in their life cycle.
Answer the following statement true (T) or false (F)
False
Animals do not have a cell wall.
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A positive test was observed on a serum sample that resulted in the formation of a fine precipi-tate on a reaction card. The most likely organism serologically identified is:
a. Chlamydia trachomatis. b. Bacillus anthracis. c. Treponema pallidum. d. Toxoplasma gondii.
The retroviruses, including HIV, are unique because they use
A) replication. B) reverse transcription. C) splicing. D) reverse translation. E) posttranslational modification.
Transport of photosynthetically produced sugars from leaves to roots occurs by _____
a. pressure flow b. differences in source and sink solute concentrations c. the pumping force of xylem vessels d. transpiration, tension, and cohesion of water e. pressure flow and differences in source and sink solute concentrations
The type of cooperation between two species of a community that is based on satisfying the needs of both species is called
A. commensalism. B. mutualism. C. parasitism. D. predation.