Biomolecules MCQs with Answers

Which biomolecule is the primary source of energy in living organisms?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is composed of amino acids?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is known as the building blocks of cells?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is a major component of cell membranes?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: b) Lipids

Which biomolecule stores and transmits genetic information?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule provides insulation and cushioning for organs?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: b) Lipids

Which biomolecule is the most efficient energy storage molecule?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: b) Lipids

Which biomolecule serves as enzymes to facilitate biochemical reactions?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule includes glucose and fructose?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule consists of long chains of nucleotides?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule provides structural support for cells and tissues?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is the main component of connective tissues like cartilage and tendons?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is composed of long chains of sugar molecules?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is responsible for carrying out the instructions encoded in DNA?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is involved in immune responses and defense mechanisms?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is made up of glycerol and fatty acids?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: b) Lipids

Which biomolecule is a quick source of energy for the body?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule includes molecules such as insulin and hemoglobin?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule forms the basis of cell signaling and communication?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule contains phosphate groups and forms the backbone of DNA and RNA?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule includes cellulose and starch?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule acts as a storage form of energy in the liver and muscles?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is responsible for transmitting hereditary traits?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule plays a key role in regulating and controlling cell functions?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is involved in muscle contraction and movement?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is a major component of hormones and cholesterol?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: b) Lipids

Which biomolecule is responsible for carrying out chemical reactions in cells?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule forms the structural framework of DNA and RNA?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is the most abundant in living organisms?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is responsible for catalyzing chemical reactions in the body?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is involved in cell adhesion and cell recognition?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is responsible for storing and transferring genetic information in viruses?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is involved in maintaining pH balance and regulating body temperature?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is made up of carbon, hydrogen, and oxygen in a 1:2:1 ratio?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule serves as a messenger between cells and tissues?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is responsible for forming antibodies and defending against pathogens?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is composed of a phosphate group, a sugar, and a nitrogenous base?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is responsible for transporting oxygen in the blood?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is involved in cell signaling and communication?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is composed of long chains of amino acids linked by peptide bonds?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is the primary structural component of hair, nails, and skin?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is responsible for regulating gene expression and protein synthesis?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is composed of three fatty acids and glycerol?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: b) Lipids

Which biomolecule is responsible for providing structure and support to plants?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is involved in the storage and transmission of hereditary information in cells?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is responsible for breaking down and digesting food in the body?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is composed of carbon, hydrogen, and oxygen atoms in various ratios?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is involved in the transmission of electrical signals in nerve cells?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is responsible for storing genetic information in the form of genes?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is a major component of cell walls in bacteria and plants?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule serves as a precursor for the synthesis of hormones and vitamins?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: b) Lipids

Which biomolecule is responsible for transporting and storing oxygen in muscles?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is involved in the regulation of metabolic processes in the body?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is responsible for maintaining the shape and structure of cells and tissues?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is composed of nucleotides and forms the genetic material of cells?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is involved in the regulation of cellular processes and gene expression?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is responsible for the transport of lipids in the bloodstream?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is composed of sugar, phosphate, and a nitrogenous base?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is involved in the regulation of cell growth and division?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is responsible for catalyzing chemical reactions in cells?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is involved in the formation of cell membranes and insulation of nerve fibers?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: b) Lipids

Which biomolecule is responsible for the transport of electrons during cellular respiration?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is composed of two strands and forms a double helix structure?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is involved in the formation of antibodies and the immune response?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is responsible for the transport of ions across cell membranes?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: c) Proteins

Which biomolecule is composed of repeating units of nucleotides?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: d) Nucleic acids

Which biomolecule is involved in the storage and transmission of energy in cells?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is responsible for the production of ATP in cellular respiration?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is composed of long chains of monosaccharides?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: a) Carbohydrates

Which biomolecule is involved in the regulation of metabolism and energy balance in the body?
a) Carbohydrates
b) Lipids
c) Proteins
d) Nucleic acids
Answer: b) Lipids

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