BIOMOLECULES AND ENZYMES

BIOLOGY

CARBOHYDRATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which characteristic BEST explains why carbon is relevant to living organisms?
A
Carbon is the most common element on Earth.
B
Carbon can form a wide variety of molecules.
C
Many carbon isotopes are radioactive
D
Many carbon allotropes occur in nature.
Explanation: 

Detailed explanation-1: -The reason is carbon’s ability to form stable bonds with many elements, including itself. This property allows carbon to form a huge variety of very large and complex molecules. In fact, there are nearly 10 million carbon-based compounds in living things!

Detailed explanation-2: -Carbon is phenomenally important to life as we understand it. The ability to form bonds with up to four different atoms gives carbon an incredible chemical diversity, and allows for carbon to make long chains and aromatic compounds.

Detailed explanation-3: -What are the characteristics of carbon that make possible the building of such a wide variety of organic molecules? Carbon has four valence electrons. It can form four different bonds with other carbon atoms or other atoms. Carbon can form chains, branches, rings – a wide variety of shapes!

Detailed explanation-4: -The bonding properties of carbon For one thing, carbon-carbon bonds are unusually strong, so carbon can form a stable, sturdy backbone for a large molecule. Perhaps more important, however, is carbon’s capacity for covalent bonding.

Detailed explanation-5: -Characteristics of Carbon Carbon makes 4 electrons to form a covalent bond. It has a number of allotropes and other forms of existence. These include diamond and graphite with distinctive properties. Carbon is highly unreactive under conditions that are normal.

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