Which of the Following Statements About Iron-Sulfur Proteins Is FALSE

question 63

Multiple Choice

Which of the following statements about iron-sulfur proteins is FALSE?

• A)They are components of the electron transport chain.
• B)Their iron is not attached to a porphyrin ring.
• C)Their iron is attached to sulfides.
• D)Their iron is attached to the sulfur of sulfur-containing amino acids.
• E)They carry electrons and protons.

---

Definitions:

Nasal Cavity

The interior space of the nose, involved in breathing and olfaction, lined with hairs and mucous membranes.

Thyroid Cartilage

Largest laryngeal cartilage. It forms the laryngeal prominence, or Adam’s apple.

Laryngeal Cartilages

The cartilaginous structures in the larynx (voice box) that provide support and protection, including the thyroid, cricoid, and arytenoid cartilages.

Pharynx

A region of the throat situated behind the mouth and nasal cavity, crucial for the passage of air to the lungs and food to the esophagus.