Which of the Following Statements Are True of Trace Elements

question 8

Multiple Choice

Which of the following statements are true of trace elements (Select all that apply) ?

• A)Iron is part of the hemoglobin in RBCs.
• B)Vitamin B12 contains the mineral copper.
• C)The transmission of nerve impulses depends on sodium and potassium.
• D)Cobalt is needed for the hormone thyroxine.
• E)Phosphorus is part of DNA and RNA.
• F)The mineral necessary for blood clotting is iodine.
• G)The mineral that helps store oxygen in muscle cells is magnesium.
• H)Sulfur is part of some proteins.

Identify different types of stressors and their psychological effects.

Recognize the importance of social support and coping mechanisms in moderating stress responses.

Understand the characteristics and symptoms of post-traumatic stress disorder (PTSD).

Grasp the concept of protective and vulnerability factors in relation to stress and illness.

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Definitions:

Lead(II) Nitrate

A white to colorless crystalline chemical compound used in making other lead compounds and some pyrotechnics.

Sodium Chloride

A white crystalline compound known as table salt, widely used in food seasoning and preservation; its chemical formula is NaCl.

Lead(II) Chloride

A chemical compound with the formula PbCl2, known for its white crystalline appearance and poor solubility in water.

Saturated Solution

A solution that contains the maximum amount of solute that can be dissolved in a solvent at a given temperature and pressure.