Identify and describe the fibrous protein made by keratinocytes
What will be an ideal response?
Keratin is the fibrous protein made by keratinocytes. Keratin makes the epidermis tougher and more resistant to mechanical stress.
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The term metabolism refers to
A. the reactions in the body that synthesize proteins and nucleic acids. B. the breakdown of glucose molecules to release energy. C. the reactions in the body that break down proteins and nucleic acids. D. all of the chemical reactions in a cell.
Valves in veins
A. make the use of a skeletal muscle pump unnecessary for venous blood flow. B. are the leading cause of high blood pressure. C. are found only in the largest veins. D. cause venous blood flow to go in only one direction. E. are formed of the tunica media.
Metabolism is often divided into ________, energy-producing reactions, and ________, energy-utilizing reactions.
Fill in the blank(s) with the appropriate word(s).
The substance that serves as a liquid shock absorber protecting the brain and spinal cord is called ________________________.?
Fill in the blank(s) with correct word