LIFE SCIENCE

Detailed explanation-1: -Because a C atom can form covalent bonds to as many as four other atoms, it’s well suited to form the basic skeleton, or “backbone, ‘’ of a macromolecule.

Detailed explanation-2: -Carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds. When it bonds only with hydrogen, it forms compounds called hydrocarbons. There are millions of known carbon compounds, and carbon is the only element that can form so many different compounds.

Detailed explanation-3: -The fundamental component for all of these macromolecules is carbon. The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone, ‘’ of the macromolecules.

Detailed explanation-4: -Carbon atoms are uniquely suited to build large molecules because they have four valence electrons. This allows carbon atoms to form four single bonds to other atoms, or two double bonds, or one double bond and two single bonds.

Detailed explanation-5: -Carbon is the chemical backbone of life on Earth. Carbon compounds regulate the Earth’s temperature, make up the food that sustains us, and provide energy that fuels our global economy.