Q1. Which biomolecule acts as a genetic messenger, transferring information from DNA to ribosomes?A. tRNAB. mRNAC. rRNAD. DNA
Q2. Which of the following is an example of a secondary metabolite?A. GlucoseB. RubberC. StarchD. Glycogen
Q3. Which type of bond connects amino acids in a polypeptide chain?A. Glycosidic bondB. Peptide bondC. Phosphodiester bondD. Ionic bond
Q5. Which of the following is a structural polysaccharide found in arthropod exoskeletons?A. ChitinB. GlycogenC. StarchD. Cellulose
Q7. What is the quaternary structure of proteins?A. Linear sequence of amino acidsB. Three-dimensional folding of a single polypeptideC. Interaction of multiple polypeptide chainsD. Formation of alpha-helices and beta-sheets
Q8. Which form of RNA carries amino acids to the ribosome during protein synthesis?A. mRNAB. tRNAC. rRNAD. snRNA
Q9. Which of the following statements about ATP is incorrect?A. ATP is the primary energy currency of cells.B. ATP contains ribose sugar.C. ATP stores energy in its phosphate bonds.D. ATP is a protein.
Q10. Which of the following statements about proteins is incorrect?A. Proteins are polymers of amino acids linked by peptide bonds.B. The sequence of amino acids determines the protein's function.C. All proteins function as enzymes.D. Proteins can have structural or catalytic roles.