Which statement summarizes the distinction between nonpolar and polar covalent bonds?
A. The difference in electronegativity of the atoms in a nonpolar covalent bond is very large.
B. The electrons are more evenly and symmetrically distributed in orbit among atoms in a nonpolar covalent bond.
C. The electrons are more evenly and symmetrically distributed in orbit among atoms in a polar covalent bond.
D. Polar covalent bonds are formed when the atoms gain or lose electrons to bond and become oppositely charged ions.
B. The electrons are more evenly and symmetrically distributed in orbit among atoms in a nonpolar covalent bond.
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Creation of a special, resistant zygospore during sexual reproduction is characteristic of members of
which fungal phylum?
a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota
Gymnosperms, angiosperms, and ferns are alike in that they all
A. produce seeds. B. have well-developed vascular tissue. C. have flowers during some part of their life cycles. D. lack a gametophyte generation.
In flowering plants, the unfertilized ovule contains the
A) embryo. B) endosperm. C) female gametophyte. D) stigma. E) pollen grain.
The formation of ADP from ATP can be defined as a hydrolytic reaction
Indicate whether the statement is true or false