Identify the Statement That Is True of the Heme Group

question 60

Multiple Choice

Identify the statement that is true of the heme group of hemoglobin.

• A) The heme group contains an iron ion in its Fe³⁺ oxidation state.
• B) The porphyrin part of the heme group consists of four pyrrole rings.
• C) The pyrrole rings are linked together to form a tetrahedral structure.
• D) The iron ion in the heme group has eight coordination sites.

---

Definitions:

Inattentional Blindness

The phenomenon where an individual fails to perceive an unexpected stimulus that is in plain sight, due to the attention being focused on another task or aspect of their environment.

Inattentional Blindness

The phenomenon where an individual fails to notice a fully visible, but unexpected object because their attention was engaged on another task, event, or object.

Absolute Threshold

The minimum intensity of a stimulus that can be detected by a person's senses at least 50% of the time.

Difference Threshold

The smallest amount by which a stimulus can be changed and the difference be detected half the time, also known as the just noticeable difference.