Biomolecules

Q. What are the building blocks of nucleic acids?
  • A. Amino acids
  • B. Fatty acids
  • C. Nucleotides
  • D. Monosaccharides
Q. What is denaturation of proteins?
  • A. The process of protein synthesis
  • B. The loss of protein function due to structural changes
  • C. The formation of peptide bonds
  • D. The folding of proteins into their functional shape
Q. What is the basic building block of proteins?
  • A. Nucleotides
  • B. Fatty acids
  • C. Amino acids
  • D. Monosaccharides
Q. What is the basic structural unit of proteins?
  • A. Nucleotide
  • B. Monosaccharide
  • C. Amino acid
  • D. Fatty acid
Q. What is the basic unit of nucleic acids?
  • A. Amino acid
  • B. Nucleotide
  • C. Monosaccharide
  • D. Fatty acid
Q. What is the basic unit of proteins?
  • A. Nucleotide
  • B. Monosaccharide
  • C. Amino acid
  • D. Fatty acid
Q. What is the function of hemoglobin in the body?
  • A. To catalyze reactions
  • B. To transport oxygen
  • C. To provide structural support
  • D. To store energy
Q. What is the general formula for carbohydrates?
  • A. C_n(H2O)_n
  • B. C_nH_nO_n
  • C. C_nH_2nO_n
  • D. C_nH_2O_n
Q. What is the isoelectric point (pI) of a protein?
  • A. The pH at which the protein is positively charged
  • B. The pH at which the protein is negatively charged
  • C. The pH at which the protein has no net charge
  • D. The pH at which the protein is denatured
Q. What is the isoelectric point of a protein?
  • A. The pH at which the protein is positively charged
  • B. The pH at which the protein is negatively charged
  • C. The pH at which the protein has no net charge
  • D. The pH at which the protein denatures
Q. What is the main component of cell membranes?
  • A. Proteins
  • B. Carbohydrates
  • C. Phospholipids
  • D. Nucleic acids
Q. What is the main component of the cell membrane?
  • A. Proteins
  • B. Carbohydrates
  • C. Phospholipids
  • D. Nucleic acids
Q. What is the main function of carbohydrates in living organisms?
  • A. Genetic information
  • B. Energy storage
  • C. Catalysis
  • D. Structural support
Q. What is the main function of lipids in biological systems?
  • A. Energy storage
  • B. Genetic information
  • C. Catalysis
  • D. Structural support
Q. What is the main storage form of carbohydrates in animals?
  • A. Starch
  • B. Glycogen
  • C. Cellulose
  • D. Chitin
Q. What is the main structural component of plant cell walls?
  • A. Starch
  • B. Glycogen
  • C. Cellulose
  • D. Chitin
Q. What is the molecular formula of fructose?
  • A. C6H12O6
  • B. C5H10O5
  • C. C6H10O5
  • D. C5H12O6
Q. What is the primary function of carbohydrates in living organisms?
  • A. Energy storage
  • B. Genetic information
  • C. Catalysis
  • D. Structural support
Q. What is the primary function of enzymes in biological systems?
  • A. Store energy
  • B. Speed up chemical reactions
  • C. Provide structural support
  • D. Transport molecules
Q. What is the primary function of enzymes?
  • A. Store energy
  • B. Speed up chemical reactions
  • C. Provide structure
  • D. Transport substances
Q. What is the primary function of lipids in biological systems?
  • A. Energy storage
  • B. Catalysis
  • C. Genetic information
  • D. Structural support
Q. What is the primary storage form of carbohydrates in animals?
  • A. Starch
  • B. Glycogen
  • C. Cellulose
  • D. Chitin
Q. What is the primary structural component of plant cell walls?
  • A. Starch
  • B. Glycogen
  • C. Cellulose
  • D. Chitin
Q. What is the primary structure of a protein determined by?
  • A. Hydrogen bonds
  • B. Ionic bonds
  • C. Peptide bonds
  • D. Disulfide bridges
Q. What is the primary structure of a protein?
  • A. The sequence of amino acids
  • B. The folding of the polypeptide chain
  • C. The arrangement of multiple polypeptide chains
  • D. The interaction between side chains
Q. What is the role of ATP in cells?
  • A. Storage of genetic information
  • B. Energy currency
  • C. Structural component
  • D. Signal transduction
Q. What is the role of enzymes in biochemical reactions?
  • A. Increase activation energy
  • B. Decrease activation energy
  • C. Change the equilibrium of the reaction
  • D. Provide energy for the reaction
Q. What is the role of enzymes in biological systems?
  • A. To provide structural support
  • B. To act as catalysts for biochemical reactions
  • C. To store genetic information
  • D. To transport molecules across membranes
Q. What is the role of RNA in protein synthesis?
  • A. Storage of genetic information
  • B. Transcription of DNA
  • C. Translation of proteins
  • D. Both transcription and translation
Q. What is the simplest form of carbohydrate?
  • A. Disaccharide
  • B. Monosaccharide
  • C. Polysaccharide
  • D. Oligosaccharide
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