Biochemistry Final Exam Questions With 100% Correct Answers

Biochemistry Final Exam Questions With 100% Correct Answers A molecule with the formula C10H18O is most likely to be a(an) A. Lipid B. Amino Acid C. Nucleotide D. Carbohydrate - answerA. Lipid The most abundant functional group in glucose is a A. Carbonyl group B. Phosphate group C. Carboxylate group D. Hydroxyl group - answerD. Hydroxyl group To separate a polynucleotide into individual nucleotides, what type of bond must be broken? A. Phosphodiester bond B. Phosphoanhydride bond C. Glycosidic bond D. Peptide bond - answerA. Phosphodiester bond Which type of polymer is commonly used for energy storage? A. Nucleic acids B. Proteins C. Carbohydrates - answerC. Carbohydrates If the change in enthalpy for a reaction is 8 kJ · mol-1, heat is ______ during the reaction. A. Neither given off nor absorbed B. Given off C. Absorbed - answerC. Absorbed What is the free energy change for a reaction at 25°C when ΔH = -15,000 J · mol-1 and ΔS = -75 J · K-1 · mol-1? A. 37.4 kJ * mol-1 B. 7.4 kJ * mol-1 C. -13.1 kJ * mol-1 D. -16.9 kJ * mol-1 - answerB. 7.4 kJ * mol-1 A thermodynamically unfavorable chemical reaction can occur in a cell because A. Sunlight is a driving force for chemical reactions in all cells B. The reaction must be at equilibrium in a cell C. Living systems do not obey the laws of thermodynamics D. The unfavorable reaction can be coupled to a favorable reaction - answerD. The unfavorable reaction can be coupled to a favorable reaction Which process was necessary for prebiotic evolution? A. Extinction B. Sedimentation C. Replication D. Photosynthesis - answerC. Replication The three domains of life are A. Eukaryotes, prokaryotes, and fungi B. Monera, protists, and animals C. Archaea, bacteria, and eukarya D. Plants, animals, and protists - answerC. Archaea, bacteria, and eukarya How do eukaryotic and prokaryotic cells differ? A. Only eukaryotic cells use DNA for genetic information B. Only eukaryotic cells have a nucleus C. Only eukaryotic cells carry out photosynthesis D. Only eukaryotic cells have a membrane - answerB. Only eukaryotic cells have a nucleus Which of the following is the most abundant element in the human body? A. Nitrogen B. Carbon C. Oxygen D. Phosphorous E. None of the above - answerB. Carbon Which of the major types of biomolecules is never found in a polymeric form? A. Amino acids B. Carbohydrates C. Nucleotides D. Lipids E. None of the above - answerD. Lipids Which of the following biopolymers is correctly paired with the bond that forms between the monomers? A. Protein: ester bond B. Polysaccharide : glycosidic bond C. DNA : phosphate bond D. RNA : phosphate bond E. All of the above - answerB. Polysaccharide : glycosidic bond Which elements are found in simple carbohydrates? A. Carbon, hydrogen and oxygen B. Carbon, hydrogen, oxygen and nitrogen C. Carbon, Hydrogen, oxygen and phosphorous D. Carbon, Hydrogen, oxygen and sulfur E. None of the above - answerA. Carbon, hydrogen and oxygen Entropy is used to measure _____. A. Free energy B. Heat content C. Temperature D. Randomness E. All of the above - answerD. Randomness A spontaneous process always has _____. A. ΔG < 0 B. ΔG > 0 C. ΔH < 0 D. ΔH > 0 E. none of the above - answerA. ΔG < 0 Which of the following molecules contains the mo