About ____ species of birds have been described
a. 1,000
b. 2,000
c. 4,500
d. 9,000
e. 20,000
d
Biology & Microbiology
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The class of proteobacteria that may be incorporated into the gamma proteobacteria is the ________.
A. delta proteobacteria B. alpha proteobacteria C. beta proteobacteria D. epsilon proteobacteria
Biology & Microbiology
Which solution will cause water to be drawn out of a cell?
a. Hypotonic b. Isotonic c. Hypertonic d. Catatonic
Biology & Microbiology
Cells that de-differentiate, lose cell cycle control, and lose their attachment to the surrounding cells, are known as ________.
What will be an ideal response?
Biology & Microbiology
An isotope contains more or fewer electrons than normally found in an atom of a particular element and may give off radiation.
a. true b. false
Biology & Microbiology