Resonance:
A. is an aspect of valence bond theory that describes the multiple structures that can be adopted by a single bond.
B. occurs in molecules that contain single and double bonds next to each other and, as a result, can exist as an average of multiple structures.
C. explains why double bonds are planar.
D. is an aspect of valence bond theory that describes the multiple structures that can be adopted by a double bond.
E. occurs in peptide bonds but not in nucleic acids.
B
You might also like to view...
Which of the following statements about telomeres is INCORRECT?
A. Telomeres are produced by telomerase. B. Telomeres are found at the ends of DNA. C. Telomeres are short repeat sequences. D. Telomeres would predominate more in cells of older than younger individuals. E. Telomeres are crucial to the viability of a cell that replicates often.
Water is able to cross plant plasma membranes by a combination of
A. osmosis and aquaporins. B. evaporation and diffusion. C. root pressure and turgidity. D. diffusion and phloem. E. transpiration and Casparian strips.
Vascular plants and air-breathing animals first appeared during which time period?
a. Silurian period b. Permian period c. Cambrian period d. Ordovician period e. Cretaceous period
Fungi are found associated with the earliest plant fossils. Fungi may have helped plants become terrestrial by
A) forming associations to obtain water and minerals. B) stocking the soil with organic matter. C) providing simple organic compounds in return for sugars. D) killing the bacterial enemies of plants.