Which of the Following Statements About Orbital Symmetry and Cycloaddition

question 13

Multiple Choice

Which of the following statements about orbital symmetry and cycloaddition reactions is true?

• A) Thermal cycloadditions involving an even number of  bonds proceed by a suprafacial pathway.
• B) Thermal cycloaddition involving an odd number of  bonds proceed by an antarafacial pathway.
• C) Photochemical cycloadditions involving an even number of  bonds proceed by an antarafacial pathway.
• D) Photochemical cycloadditions involving an even number of  bonds proceed by a suprafacial pathway.

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Definitions:

Groups of Muscles

Collections of muscle tissue that work together to perform a specific function in the body.

Arthropods

Arthropods are a large phylum of invertebrate animals characterized by their exoskeleton, segmented body, and jointed appendages, including insects, arachnids, crustaceans, and myriapods.

Exoskeleton

An external skeleton that supports and protects an animal's body, common in arthropods like insects and crustaceans.

Insect Flight Muscles

Specialized muscles in insects that provide the power for flight, capable of extremely fast contractions.