This quiz works best with JavaScript enabled. Home > Agriculture > Biochemistry > General > Biochemistry – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 27 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. From what are derived amino acids? A) Organic acids in which the hydrogen atom is substitued by the carboxyl group. B) Inorganic acids. C) Organic acids in which the hydrogen atom is substitued by the aldehyde group. D) Organic acids in which the hydrogen atom is substitued by the amino group. Show Answer Correct Answer: D) Organic acids in which the hydrogen atom is substitued by the amino group. 2. Organisms whose cells have a nucleus enclosed within membranes A) Prokaryotes. B) Bacteria. C) Virus. D) Eukaryotes. Show Answer Correct Answer: D) Eukaryotes. 3. Which is true about the structure of starch molecules and proteinmolecules? A) Starches and proteins are both polymers. B) Starches and proteins are both amino acids. C) Starches and proteins are both built from simple sugars. D) Starches and proteins are both built from nucleic acids. Show Answer Correct Answer: A) Starches and proteins are both polymers. 4. ..... have the lowest (weakest) intermolecular forces of attraction. A) Vander Waals forces. B) Hydrogen Bond. C) Hydrophobic interaction. D) Covalent Bond. Show Answer Correct Answer: A) Vander Waals forces. 5. What is Biochemistry? A) The study of life. B) The study of chemicals. C) The study of the chemicals of life. D) None of above. Show Answer Correct Answer: C) The study of the chemicals of life. 6. What are the three components of a nucleotide? A) Sugar, phosphate, protein. B) Sugar, hydrogen, nitrogen base. C) Sugar, phosphate, nitrogen base. D) Sugar, oxygen, nitrogen base. Show Answer Correct Answer: C) Sugar, phosphate, nitrogen base. 7. What bond occurs between and within molecules which stabilize structures such as proteins and nucleic acids? A) Van der Waals forces. B) Hydrogen bond. C) Hydrophobic bond. D) Ionic bonds. Show Answer Correct Answer: B) Hydrogen bond. 8. Apples are considered as A) Acidic. B) Basic. C) Neutral. D) None of the above. Show Answer Correct Answer: A) Acidic. 9. When atoms share electrons unequally ..... A) A nonpolar covalent bond is formed. B) A hydrogen bond is formed. C) An ionic bond is formed. D) A polar covalent bond is formed. Show Answer Correct Answer: D) A polar covalent bond is formed. 10. Substances that do not contain carbon A) Biochemical substances. B) Bioinorganic substances. C) Bioorganic substances. D) Chemical substances. Show Answer Correct Answer: B) Bioinorganic substances. 11. The human body maintains a temperature of around 98.6 degrees at all times. Enzymes are involved in almost every chemical reaction in the body. Which of the following describes the connection between these two statements? A) The body needs to be warm to prevent hypothermia. B) Enzymes function best at a specific temperature. C) The body is kept relatively warm to prevent too much enzyme action. D) There is no connection between the two statements. Show Answer Correct Answer: B) Enzymes function best at a specific temperature. 12. Which macromolecule is used for long term energy storage? A) Lipids. B) Carbohydrates. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: A) Lipids. 13. Joining two adjacent amino acids is called A) A peptide bond. B) A dehydration reaction. C) A covalent bond. D) All choices are correct. Show Answer Correct Answer: B) A dehydration reaction. 14. Adenine bonds with ..... A) Thymine. B) Cytosine. C) Adenine. D) Guanine. Show Answer Correct Answer: A) Thymine. 15. ..... may be fats, oils, or waxes. A) Lipids. B) Proteins. C) Nucleic Acids. D) Carbohydrates. Show Answer Correct Answer: A) Lipids. 16. What happens during translation? A) The cell uses a messenger RNA code to make proteins. B) Copies of DNA molecules are made. C) Messenger RNA is made from a DNA code. D) Transfer RNA is made from a messenger RNA code. Show Answer Correct Answer: A) The cell uses a messenger RNA code to make proteins. 17. Which of the following is NOT a type of macromolecule? A) Nucleic Acid. B) Water. C) Protein. D) Lipid. Show Answer Correct Answer: B) Water. 18. Building reactions needed to maintain life is considered as: A) Lolabolic. B) Catabolic. C) Metabolic. D) Anabolic. Show Answer Correct Answer: D) Anabolic. 19. ..... increase the presence of H+ ions and are below 7 on the pH scale. A) Acids. B) Electrolytes. C) Salts. D) Bases. Show Answer Correct Answer: A) Acids. 20. Why is carbon able to be the building block of organic compounds? A) Light in atomic weight. B) Large. C) Non-reactive element. D) Able to make 4 bonds. Show Answer Correct Answer: D) Able to make 4 bonds. 21. Which of the following are termed as reducing sugars? A) Aldohexoses. B) Trioses. C) Ketohexoses. D) None of above. Show Answer Correct Answer: A) Aldohexoses. 22. A disaccharide is a carbohydrate that contains ..... A) 3 or more sugars. B) One sugar. C) Two sugars. D) Fatty acid chains. Show Answer Correct Answer: C) Two sugars. 23. Which macromolecule stores energy, insulates us, and makes up the cell membrane? A) Lipids. B) Nucleic acids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: A) Lipids. 24. In which type of bond are electrons transferred? A) Hydrogen Bonds. B) Ionic Bonds. C) Non-polar Covalent Bonds. D) Polar Covalent Bonds. Show Answer Correct Answer: B) Ionic Bonds. 25. What is the chemical formula for water? A) H2O. B) H2O3. C) H2O2. D) H3O. Show Answer Correct Answer: A) H2O. 26. What is the essence of the denaturation? A) Desintegration of amino acids. B) Desintegration of proteins. C) Desintegration of low-energy bonds. D) Desintegration of peptide bonds. Show Answer Correct Answer: C) Desintegration of low-energy bonds. 27. Bananas are considered as ..... A) Acidic. B) Basic. C) Neutral. D) None of the above. Show Answer Correct Answer: A) Acidic. 28. Breads, rice, & pasta are examples of foods that contain this macromoleucle A) Proteins. B) Carbohydrates. C) Nucleic Acids. D) Lipids. Show Answer Correct Answer: B) Carbohydrates. 29. Water is often called the "universal solvent" because many substances can be dissolved in water. What property of water allows it to be such a versatile solvent? A) High heat capacity. B) Polarity. C) Purity. D) Expansion upon freezing. Show Answer Correct Answer: B) Polarity. 30. What is a biuret reaction? A) A colour reaction. B) A denaturation reaction. C) A reduction reaction. D) An oxydation reaction. Show Answer Correct Answer: A) A colour reaction. ← 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