Exhibit 31-1 MATCH a Term or Structure from the List Below to Below

question 32

Multiple Choice

Exhibit 31-1
MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.

-____ Produced by reactions in which each bond in the polymer is formed independently of the others.

• A)BF₃ + H₂O
• B)elastomer
• C)chain-growth polymer
• D)AL(CH₂CH₃)₃ + TiCl₄
• G)thermoplastic
• H)homopolymer
• I)plasticizers
• J)thermosetting resins
• K)copolymers
• L)step-growth polymer
• M)Grubb's catalyst
• N)metallacycle

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Definitions:

Organ of Hearing

The ear, which is responsible for detecting sound vibrations and converting them into neural signals for the brain.

Ceruminous Glands

Modified sebaceous glands in the external acoustic meatus that produce cerumen (earwax).

Earwax

A natural substance produced by glands in the ear canal that helps clean, protect, and lubricate the ears, preventing dust and debris from entering.

Membranous Labyrinth

A complex system of fluid-filled tubes and sacs found within the inner ear, essential for hearing and balance.