When O₂ Binds,which of the Following Components of the Heme

question 21

Multiple Choice

When O₂ binds,which of the following components of the heme group is drawn into the plane of the porphyrin,causing a conformational change that is transmitted to adjacent subunits,enhancing the affinity for additional O₂ binding?

• A)Mg
• B)CO
• C)His
• D)Fe

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Definitions:

Trabeculae

Trabeculae are the small, beam-like structures of spongy bone that provide structural support and help reduce the weight of bones.

Central Canal

A fluid-filled channel in the center of the spinal cord.

Lamella

Thin layers or plates, such as those found in bone, making up the concentric rings in the structure of compact bone.

Canaliculus

Small, channel-like structures in bone and dental tissue, facilitating nutrients and waste exchange between blood vessels and osteocytes.