Multiple Choice
Which characteristic best explains why carbon is relevant to living organisms?
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4. Biomolecules
Carbon
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Which of the following best describes the role of carbon in biological systems?
A
Carbon forms the backbone of organic molecules, allowing for the diversity and complexity of life.
B
Carbon is only found in inorganic compounds within living organisms.
C
Carbon is used exclusively for energy storage in cells.
D
Carbon acts primarily as a catalyst in most biochemical reactions.
Verified step by step guidance1
Understand the importance of carbon in biological systems: Carbon is a fundamental element in organic chemistry and biology because it has the unique ability to form four covalent bonds, allowing it to create complex and diverse molecules.
Recognize that carbon forms the backbone of organic molecules: Organic molecules, such as carbohydrates, lipids, proteins, and nucleic acids, are all built around carbon atoms. This structural role is essential for the diversity and complexity of life.
Eliminate incorrect options: Carbon is not exclusively found in inorganic compounds within living organisms, nor is it used only for energy storage. Additionally, carbon does not act primarily as a catalyst in biochemical reactions; catalysts are typically enzymes or other molecules.
Focus on the correct description: Carbon's ability to form stable bonds with other elements, including hydrogen, oxygen, nitrogen, and phosphorus, makes it the backbone of organic molecules, which are crucial for life processes.
Conclude that the correct answer is: 'Carbon forms the backbone of organic molecules, allowing for the diversity and complexity of life.' This statement accurately describes carbon's role in biological systems.
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