What Is a Characteristic of Most Animals

question 9

Multiple Choice

What is a characteristic of most animals?

• A)They have Hox genes.
• B)They are autotrophic.
• C)They lack an extracellular matrix of proteins such as collagen.
• D)They have cell walls.

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Definitions:

Concerted Reaction

A chemical reaction in which all bonds are broken and formed in a single step, typically involving a cyclic transition state.

Allylic Halide

A halogenated compound where the halogen atom is positioned adjacent to a carbon-carbon double bond.

Grignard Reagent

An organomagnesium compound used in a variety of synthetic reactions in organic chemistry to form carbon-carbon bonds.

Diastereomers

Stereoisomers that are not mirror images of each other and have different chemical and physical properties.