This quiz works best with JavaScript enabled. Home > Agriculture > Biochemistry > General > Biochemistry – Quiz 33 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 33 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is Carbon's atomic number? A) 6. B) 4. C) 5. D) 3. Show Answer Correct Answer: A) 6. 2. Which of these describes hydrolysis? A) M + M $\rightarrow$ P + WATER. B) P + WATER $\rightarrow$ M + M. C) BOTH OF THESE SHOW HYDROLYSIS. D) NEITHER OF THESE. Show Answer Correct Answer: B) P + WATER $\rightarrow$ M + M. 3. What are the building blocks of proteins? A) Nucleotide. B) Lipid. C) Fatty acid. D) Amino acid. Show Answer Correct Answer: D) Amino acid. 4. What bond has a very weak interaction between non-polar molecules that is important in protein shape and membrane structure? A) Hydrogen bond. B) Ionic bonds. C) Hydrophobic bond. D) Van der Waals forces. Show Answer Correct Answer: C) Hydrophobic bond. 5. Which is not a use or function of lipids? A) Forms hormones. B) Forms the cell membrane. C) Provides warmth and cushioning. D) Quick energy. Show Answer Correct Answer: D) Quick energy. 6. What is the highest level of protein structure is seen in insulin? A) Quaternary. B) Tertiary. C) Secondary. D) Primary. Show Answer Correct Answer: A) Quaternary. 7. The anthocyanin indicator turns ..... when the solution is considered basic. A) Green. B) Orange. C) Purple. D) Red. Show Answer Correct Answer: C) Purple. 8. What are the building blocks of carbohydrates? A) Glycerol. B) Amino acids. C) DNA. D) Simple sugars (glucose). Show Answer Correct Answer: D) Simple sugars (glucose). 9. ATP synthase in the inner mitochondrial and chloroplast membrane A) Triglyceride. B) Protein. C) Phospholipid. D) Cholesterol. Show Answer Correct Answer: B) Protein. 10. What can reduce or destroy enzyme activity? A) Excessive heat. B) Strong acid. C) Strong base. D) All of the above. Show Answer Correct Answer: D) All of the above. 11. Cellulose, glycogen, starch, or chitin A) Carbohydrates. B) Nucleic acid. C) Proteins. D) Lipids. Show Answer Correct Answer: A) Carbohydrates. 12. Fats are specialized lipid molecules, and enzymes are specialized protein molecules. How dothe functions of fats and enzymes differ? A) Fats are structural building materials, while enzymes are transportation molecules. B) Fats regulate body functions, while enzymes denature invasive bacteria. C) Fats provide support for cells, while enzymes lower the pH of gastric fluids. D) Fats are storage molecules, while enzymes are catalytic molecules. Show Answer Correct Answer: D) Fats are storage molecules, while enzymes are catalytic molecules. 13. Can you identify this Vitamin? This vitamin maintains a lot of your body's tissues, like the ones in your eyes, skin and liver. It protects your lungs from becoming damaged by polluted air and is important for the formation of red blood cells. A) Vitamin K. B) Vitamin E. C) Vitamin A. D) Vitamin C. Show Answer Correct Answer: B) Vitamin E. 14. Which macromolecule is made of simple and complex sugars? A) Nucleic acids. B) Lipids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: C) Carbohydrates. 15. On an enzyme, the site that attaches to a substrate A) Polypeptide. B) Substrate. C) Active site. D) Base. Show Answer Correct Answer: C) Active site. 16. The central region of an atom where its neutrons and protons are is its ..... A) Proton. B) Electron cloud. C) Nucleus. D) Core. Show Answer Correct Answer: C) Nucleus. 17. A particle that moves around the nucleus is a(n) ..... A) Quark. B) Proton. C) Neutron. D) Electron. Show Answer Correct Answer: D) Electron. 18. Which is the monomer (building block) for nucleic acids? A) Monosaccharide. B) Nucleotide. C) Fatty acid & glycerol. D) Amino acid. Show Answer Correct Answer: B) Nucleotide. 19. What are the monomers of a polysaccharide? A) Amino acid. B) Fatty acid. C) Glucose. D) Glycerol. Show Answer Correct Answer: C) Glucose. 20. Made of monomers of nucleotides A) Carbohydrates. B) Nucleic Acids. C) Proteins. D) Lipids. Show Answer Correct Answer: B) Nucleic Acids. 21. Which of the following substances would have the greatest concentration of H+ ions? A) Milk with pH 5. B) Water with pH 7. C) Ammonia with pH 13. D) Lemon juice with pH 2. Show Answer Correct Answer: D) Lemon juice with pH 2. 22. Which of the following is not an RNA nitrogenous base? A) Uracil. B) Adenine. C) Guanine. D) Thymine. Show Answer Correct Answer: D) Thymine. 23. Cells aggregate to form tissues or organs and these are further organized to form whole organism. A) Prokaryotes. B) Eukaryotes. C) Bacteria. D) Fungi. Show Answer Correct Answer: B) Eukaryotes. 24. It is an enzyme that catalyzes the decomposition of carbonic acid into carbon dioxide and water A) Carbonic anhydrase. B) Catalysts. C) Enzymes. D) Anhydrase. Show Answer Correct Answer: A) Carbonic anhydrase. 25. Debye Interaction deals with .....? A) A permanent and induced dipole. B) Induced and induced dipole. C) Two permanent dipole. D) Instant dipole - induced dipole forces. Show Answer Correct Answer: A) A permanent and induced dipole. 26. What element do organic compounds contain? A) Oxygen. B) Hydrogen. C) Carbon. D) Sulfur. Show Answer Correct Answer: C) Carbon. 27. May be saturated or unsaturated A) Proteins. B) Carbs. C) Lipids. D) Nucleic acids. Show Answer Correct Answer: C) Lipids. 28. Which are the denaturising factors? A) Elevated temperature, acids, alkalis, heavy metal ions, concentrated solutions of urea or guanidine hydrochloride. B) Elevated temperature, organic solvents, alkalis, heavy metal ions, concentrated solutions of urea or guanidine hydrochloride. C) Elevated temperature, organic solvents, acids, heavy metal ions, concentrated solutions of urea or guanidine hydrochloride. D) Elevated temperature, organic solvents, acids, alkalis, heavy metal ions, concentrated solutions of urea or guanidine hydrochloride. Show Answer Correct Answer: D) Elevated temperature, organic solvents, acids, alkalis, heavy metal ions, concentrated solutions of urea or guanidine hydrochloride. 29. Why can water have no net charge but have slight charges in different parts of the molecule? A) The oxygen end is slightly negative and the hydrogen end is slightly positive. B) The hydrogen end is slightly negative and the oxygen end is slightly positive. C) The hydrogen and oxygen ends change in polarity. D) Because it is hydrophobic. Show Answer Correct Answer: A) The oxygen end is slightly negative and the hydrogen end is slightly positive. 30. RNA differs from DNA in that:all of these A) It has a different kind of sugar. B) It has uracil. C) It is single stranded. D) All of these. Show Answer Correct Answer: D) All of these. ← PreviousNext →Related QuizzesBiochemistry QuizzesAgriculture QuizzesBiochemistry Quiz 1Biochemistry Quiz 2Biochemistry Quiz 3Biochemistry Quiz 4Biochemistry Quiz 5Biochemistry Quiz 6Biochemistry Quiz 7Biochemistry Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books