Atoms or Molecules with Unpaired Electrons That Can React with Normal

question 158

Multiple Choice

Atoms or molecules with unpaired electrons that can react with normal cells and cause damage are called ______.

• A)free radicals
• B)teratogens
• C)mutagens
• D)antioxidants
• E)vitamins

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Definitions:

Red Bone Marrow

Vascularized, modified connective tissue that is sometimes found in the cavities of spongy bone; site of blood cell formation.

Medullary Cavity

The central cavity of bone shafts where yellow marrow (fat cells) is stored.

Dense Fibrous Connective Tissue

Type of connective tissue containing many collagen fibers packed together; found in tendons and ligaments, for example.

Spongy Bone

Type of bone that has an irregular, meshlike arrangement of thin plates of bone.