The chemical properties of an element are determined by the number of ________ in its outermost energy shell
Fill in the blank(s) with correct word
electrons
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Aquifex cannot use which of the following as electron donors?
A. Thiosulfate B. Sulfur C. Glucose D. Hydrogen
The approximate resolving power of the compound light microscope is:
A) 0.2 cm. B) 0.2 mm. C) 0.2 ?m. D) 0.2 nm.
Which of the following bacterial genera plays an important role in environmental nitrogen cycles?
A. Nitrobacter B. Rhizobium C. Azospirillum D. both Nitrobacter and Rhizobium E. Nitrobacter, Rhizobium, and Azospirillum
Indicate which of the three major classes of cytoskeletal elements each statement below refers to
A. monomer that binds ATP B. includes keratin and neurofilaments C. important for formation of the contractile ring during cytokinesis D. supports and strengthens the nuclear envelope E. their stability involves a GTP cap F. used in the eukaryotic flagellum G. a component of the mitotic spindle H. can be connected through desmosomes I. directly involved in muscle contraction J. abundant in filopodia