Multiple Choice Questions on Carbon Compounds

What is the biological importance of carbohydrates?

• Storage and transfer of genetic information

• Main source of energy for cells

• Catalysts for biochemical reactions

• Structural components of cell membranes only

Which functional unit is found in carbohydrates?

• Monosaccharide units

• Fatty acid chains

• Amino acids

• Nucleotide bases

What is the functional unit of nucleic acids?

• Fatty acids

• Nucleotides

• Monosaccharides

• Amino acids

Why are nucleic acids important for living organisms?

• They provide immediate energy

• They act as hormones

• They store and transmit genetic information

• They form structural components of the cell wall

What is the functional unit of lipids?

• Amino acids

• Fatty acids and glycerol

• Nucleotides

• Monosaccharides

Which of the following is NOT a function of lipids?

• Long-term energy storage

• Insulation and protection

• Enzymatic catalysis

• Structural component of cell membranes

Cholesterol is an example of which type of lipid?

• Phospholipid

• Steroid

• Triglyceride

• Wax

Why are lipids important for living organisms?

• They provide long-term energy storage

• They act as signaling molecules (hormones)

• They form protective barriers (cell membranes)

• All of the above