Q1. Which enzyme catalyzes the conversion of substrate into product by binding to its active site?A. LigaseB. TransferaseC. Enzyme-substrate complexD. Isomerase
Q4. Which of the following statements about enzymes is true?A. They are consumed in reactionsB. They work best at any temperatureC. They lower the activation energy of reactionsD. They can function even after being denatured
Q5. Which of the following statements about amino acids is correct?A. Amino acids are the monomers of proteins.B. Amino acids do not contain nitrogen.C. Amino acids do not have a carboxyl (-COOH) group.D. Amino acids are linked by glycosidic bonds.
Q7. Which of the following statements about nucleotides is incorrect?A. Nucleotides contain a phosphate group.B. Adenosine triphosphate (ATP) is a nucleotide.C. Nucleotides do not contain any sugar molecules.D. DNA nucleotides contain nitrogenous bases.
Q8. Which of the following statements about lipids is true?A. They are polymers of fatty acidsB. They are soluble in waterC. They are important components of cell membranesD. They contain peptide bonds
Q9. Which of the following is an example of a cofactor required for enzyme activity?A. Zn²⁺B. Mg²⁺C. Both A and BD. None of the above