The Age-Related Decrease in the Number of Skin Cells Results

question 61

Multiple Choice

The age-related decrease in the number of skin cells results in thinning of the skin and occurs primarily in the:

• A)epidermis.
• B)hypodermis.
• C)dermis.
• D)subcutaneous fat.

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Definitions:

Kinase Enzymes

Enzymes that catalyze the transfer of phosphate groups from high-energy donor molecules to specific substrates, playing key roles in cellular signaling.

Proteolytic Processing

The cleavage of proteins into smaller polypeptides or amino acids, often activating or deactivating the protein's function.

Protein Degradation

The process of breaking down proteins into their constituent amino acids or peptides, usually by cellular enzymes.

Chemical Modification

The alteration of a chemical compound's structure through chemical reactions, often to change its properties or activity.