This quiz works best with JavaScript enabled. Home > Agriculture > Biochemistry > General > Biochemistry – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 26 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is it called when two atoms share electrons? A) Hydrogen bonding. B) Covalent bonding. C) Atomic bonding. D) Ionic bonding. Show Answer Correct Answer: B) Covalent bonding. 2. What are the common 3 states of matter? (Yes, this is a lie, there are 4. In fact, the 4th, plasma, is the most common thing found in our entire universe because all stars are made of it and the total mass of stars far outweighs the mass of other objects in space. Grrrrr.) A) Solid, gas, vapor. B) Solid, liquid, gas. C) Liquid, solid, fire. D) Density, solubility, boiling point. Show Answer Correct Answer: B) Solid, liquid, gas. 3. Molecule 'z' contains chains of fatty acids. What molecule is 'z'? A) Nucleic acid. B) Lipid. C) Nucleotide. D) Protein. Show Answer Correct Answer: B) Lipid. 4. What are the monomers of lipids? A) Amino acids. B) Triglycerides. C) Monosaccharides. D) Nucleotides. Show Answer Correct Answer: B) Triglycerides. 5. Which of these foods is the best source of calcium? A) Tomato. B) Bread. C) Apples. D) Milk. Show Answer Correct Answer: D) Milk. 6. These substances resist changes in pH. A) Bases. B) Buffers. C) Enzymes. D) Acids. Show Answer Correct Answer: B) Buffers. 7. Amino acids are monomers to which polymer A) Protein. B) Carbohydrate. C) Nucleic Acid. D) Lipid. Show Answer Correct Answer: A) Protein. 8. The building blocks of organic compounds are also known as ..... A) Proteins. B) Enzymes. C) Monomers. D) Polysaccharides. Show Answer Correct Answer: C) Monomers. 9. Which is the monomer (building block) for lipids? A) Nucleotide. B) Fatty acids & glycerol. C) Monosaccharide. D) Amino acids. Show Answer Correct Answer: B) Fatty acids & glycerol. 10. Industrial conversion of N2 to NH3 is carried out by which process? A) Erisman et al. B) Howarth. C) Borlaug-Bodirsky. D) Haber-Bosch. Show Answer Correct Answer: D) Haber-Bosch. 11. The elements found in nucleic acids but not carbohydrates and lipids are ..... A) Nitrogen and sulfur. B) Nitrogen and phosphorus. C) Carbon and hydrogen. D) Iron. Show Answer Correct Answer: B) Nitrogen and phosphorus. 12. It is an example of gluconeogenesis A) Chemical cycle. B) Biogeochemical cycle. C) Oxalate cycle. D) Glyoxylate cycle. Show Answer Correct Answer: D) Glyoxylate cycle. 13. Large, nonpolar organic molecules that include waxes and store more energy per gram than other organic compounds are ..... A) Proteins. B) Carbohydrates. C) Lipids. D) Nucleic acids. Show Answer Correct Answer: C) Lipids. 14. After performing Benedict's test, which colour in the resulting solution corresponds to the highest concentration of educing sugar present? A) Orange. B) Green. C) Red. D) Light blue. Show Answer Correct Answer: C) Red. 15. Which of the following is correct about the molecule cholesterol? A) It is a polar molecule. B) It is hydrophobic. C) It stores energy as a charbohydrate. D) It is a protein. Show Answer Correct Answer: B) It is hydrophobic. 16. Which macromolecule contains sulfur? A) Carbohydrates. B) Lipids. C) Nucleic Acids. D) Proteins. Show Answer Correct Answer: D) Proteins. 17. It is a five-carbon sugar molecule that helps form the phosphate backbone of DNA molecules A) RNA. B) Ribose. C) Deoxyribose. D) DNA. Show Answer Correct Answer: C) Deoxyribose. 18. Lipid is to insulation as carbohydrate is to ..... A) Enzymes. B) Quick energy. C) Insulation. D) Heredity. Show Answer Correct Answer: B) Quick energy. 19. Which of the following are the 4 essential elements that make up 96% of living matter? A) C, O, S, H. B) H, O, N, P. C) C, O, N, H. D) O, S, P, N. Show Answer Correct Answer: C) C, O, N, H. 20. A substance that is dissolved in a liquid is called the A) Polar. B) Solvent. C) Solute. D) Solution. Show Answer Correct Answer: C) Solute. 21. You might end up with very weak bones without sufficient quantities of this Vitamin A) Vitamin D. B) Vitamin C. C) Vitamin K. D) Vitamin B. Show Answer Correct Answer: A) Vitamin D. 22. Which nutrient is our body's MAIN source of energy? A) Water. B) Minerals. C) Carbohydrates. D) Fats. Show Answer Correct Answer: C) Carbohydrates. 23. What particles are found in the nucleus of an atom? A) Electron and proton. B) Proton and neutron. C) Electron and neutron. D) None of above. Show Answer Correct Answer: B) Proton and neutron. 24. All of the following biological molecules are important factors in food and nutrition except ..... A) Carbohydrates. B) Lipids. C) Nucleic Acids. D) Protein. Show Answer Correct Answer: C) Nucleic Acids. 25. In the modern Periodic Table, elements are arranged by: A) Atomic mass. B) Number of isotopes. C) Atomic number. D) Valence electrons. Show Answer Correct Answer: C) Atomic number. 26. Which type of lipid forms the primary structure of the cell membrane? A) Phospholipid. B) Triglycerides. C) Wax. D) Cholesterol. Show Answer Correct Answer: A) Phospholipid. 27. Which biochemistry area that describe the structure and three dimensional arrangements of biomolecules? A) Conformational. B) Metabolism. C) Informational. D) None of above. Show Answer Correct Answer: A) Conformational. 28. Which substance is formed as a result of chemical breakdown of glycogen? A) Glucose. B) Starch. C) Cellulose. D) Glucagon. Show Answer Correct Answer: A) Glucose. 29. Changes in pH and temperature can damage an enzymes active site. What is this called? A) Specific. B) Denature. C) Reusable. D) Catalyst. Show Answer Correct Answer: B) Denature. 30. Starch is a ..... because it is made of many sugars sub units A) Polysaccharides. B) Monosaccarhides. C) Disaccarhides. D) Protein. Show Answer Correct Answer: A) Polysaccharides. ← 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