Multiple Choice
On a microscopic level, which structure is considered the basic unit of life in all living organisms?
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1. Introduction to Biology
Introduction to Biology
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Which is the most abundant mineral in the human body?
A
Potassium
B
Magnesium
C
Calcium
D
Iron
Verified step by step guidance1
Step 1: Begin by understanding the role of minerals in the human body. Minerals are essential nutrients that help maintain various physiological functions, including bone health, muscle contraction, and nerve signaling.
Step 2: Review the functions of each mineral listed in the problem. For example, calcium is crucial for bone and teeth structure, blood clotting, and muscle function. Potassium is important for maintaining fluid balance and nerve signaling. Magnesium plays a role in enzyme activation and energy production. Iron is essential for oxygen transport in the blood.
Step 3: Consider the abundance of these minerals in the human body. Calcium is stored in large quantities in bones and teeth, making it the most abundant mineral. Potassium, magnesium, and iron are present in smaller amounts and serve different functions.
Step 4: Recall that calcium constitutes approximately 99% of the mineral content in bones and teeth, with the remaining 1% found in the bloodstream and soft tissues. This makes calcium the most abundant mineral overall.
Step 5: Conclude that calcium is the correct answer based on its significant presence in the human body and its vital role in maintaining structural and physiological functions.
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