Based on hierarchical levels of biological organization, which of these choices represents the broadest level?
A. Jaguars, giant anteaters, macaws, capybaras
B. Endocrine system
C. 3 toed sloths
D. Amazon Basin
E. School of piranhas
Answer: D
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A. Typhoid Tilly. B. Typhoid Tom. C. Typhoid Mary. D. Typhoid Mark.
In meiosis paired homologs align down the center of the cell during
A. metaphase I. B. prophase I. C. prophase II. D. metaphase II. E. anaphase II.
When a DNA sequence is transferred into a host cell from another cell, the resulting new form of DNA is called
A. a clone. B. GM organism. C. recombinant DNA. D. plasmid.
Bacterial cells can sense a gradient ONLY by identifying ________ changes rather than ________ differences because of their small ________
a. spatial / temporal / cell size b. spatial / temporal / chemoreceptors c. temporal / spatial / cell size d. temporal / spatial / chemoreceptors