The Majority of the Elements Essential to Life Are Found

question 31

Multiple Choice

The majority of the elements essential to life are found in what part of the periodic table?

• A) The top third
• B) The middle third
• C) The bottom third
• D) Evenly distributed throughout the periodic table

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Definitions:

Hemoglobin

Located in red blood cells, this compound is tasked with the transfer of oxygen from the lungs to the body's tissues and the retrieval of carbon dioxide, taking it back to the lungs.

Hemocyanin

A copper-containing protein found in the blood of some invertebrates, serving a similar oxygen-transport function as hemoglobin in vertebrates.

Iron-Porphyrin

A complex organic compound that forms the core of heme, enabling oxygen transport and storage in hemoglobin and myoglobin.

Respiratory Pigment

Substances found in various organisms that facilitate the transfer of oxygen from the environment to the organism's cells, such as hemoglobin in humans.