The Wings of Birds and Butterflies Are Examples of Structures

question 14

Multiple Choice

The wings of birds and butterflies are examples of structures that resemble each other and have similar function,but are the result of parallel evolution in separate lineages.These structures are called

• A)analogous structures.
• B)homologous structures.
• C)vestigial structures.
• D)embryonic structures.
• E)homozygous structures.

Understand the definition and characteristics of electrophiles and nucleophiles.

Correctly identify substances that act as Lewis acids and Lewis bases according to the Lewis definition.

Apply knowledge of chemical reactivity to label reactants in reactions as either nucleophiles or electrophiles.

Utilize curved arrow formalism to illustrate the movement of electron pairs in chemical reactions.

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Definitions:

Quantity Demanded

The amount of a product or service consumers are willing and able to purchase at a given price.

Quantity Supplied

The amount of a good or service that producers are willing and able to sell at a given price within a certain time period.

Supply Unchanged

A situation in which the quantity of a good or service available in the market does not increase or decrease over a period.

Quantity Supplied

The volume of a good or service that manufacturers are prepared and able to offer for sale at an established price within a given interval.