The Key Element at the Center of Chlorophyll Is

question 67

Multiple Choice

The key element at the center of chlorophyll is

• A) chlorine.
• B) copper.
• C) iron.
• D) magnesium.
• E) manganese.

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Definitions:

Skeletal Muscle

Muscle tissue that is attached to the bones and is responsible for voluntary movements.

Smooth Muscle

A type of muscle tissue which is not under conscious control, found in the walls of internal organs such as the stomach and intestines.

Cardiac Muscle

A specialized type of striated muscle found only in the heart, responsible for pumping blood throughout the body.

Osteons

The fundamental functional unit of much compact bone, encompassing concentric layers of mineralized matrix and a central canal.