Which Accurately Describes a Physiologic Role or Use for Iron

question 3

Multiple Choice

Which accurately describes a physiologic role or use for iron? (Select all that apply.)

• A) Iron is present in every cell including both oral soft and hard tissues.
• B) This nutrient is involved in the conversion of beta-carotene to protein.
• C) Iron incorporates and distributes lipids within the blood.
• D) Approximately 4 g (less than 1 tsp) is present in the body.
• E) Lactoferrin, a salivary glycoprotein, is capable of binding iron.

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Definitions:

Operant Conditioning

The technique of adjusting the intensity of an action by applying encouragements or deterrents.

Voluntary Behavior

Actions undertaken by an individual that are done by choice, without external compulsion.

Shaping Successive Approximations

A behavior modification technique that reinforces behaviors progressively closer to the desired behavior, used effectively in both humans and animals.

Skinner Box

An experimental apparatus developed by B.F. Skinner for studying behavioral conditioning in animals, particularly with reinforcements.