Enzymes ____

question 69

Multiple Choice

Enzymes ____.

• A) change the rate of a reaction
• B) change the direction of a reaction
• C) change the free energy of a reaction
• D) are used up in a reaction
• E) are present in concentrations approaching their substrates' concentrations

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Definitions:

Gingivitis

A common and mild form of gum disease (periodontal disease) that causes irritation, redness, and swelling (inflammation) of the gingiva, the part of the gum around the base of the teeth.

Frenulum

Fold extending from the floor of the mouth to the midline of the undersurface of the tongue.

Sublingual Glands

Salivary glands located beneath the tongue, responsible for secreting saliva that aids in digestion and oral hygiene.

Intrinsic Factor

Factor secreted by the parietal cells of gastric glands and required for adequate absorption of vitamin B12.