This quiz works best with JavaScript enabled. Home > Biochemistry > General > Biochemistry – Quiz 33 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 33 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In organisms, macromolecules are made up of subunits. Which of these pairs correctly describeshow a macromolecule is constructed? A) DNA is made up of nucleic acids. B) Protein is made up of amino acids. C) Nucleic acids are made up of DNA. D) Amino acids are made up of protein. Show Answer Correct Answer: B) Protein is made up of amino acids. 2. Which of the following statements about enzymes is NOT true? A) Enzymes are reusable. B) Enzymes work best at specific pH and temperatures. C) Enzymes are lipids. D) Enzymes are proteins. Show Answer Correct Answer: C) Enzymes are lipids. 3. Choose the nucleotide sequence of the RNA strand that would be complementary to the following strand:GTAGTCA A) ACGACTG. B) CAUCAGU. C) CATCAGT. D) None of above. Show Answer Correct Answer: B) CAUCAGU. 4. Substances that contain carbon A) Bioinorganic substances. B) Bioorganic substances. C) Biochemical substances. D) Chemical substances. Show Answer Correct Answer: B) Bioorganic substances. 5. Any substance that is acted upon by an enzyme is called a(n)? A) Coenzyme. B) Substrate. C) Vitamin. D) Polypeptide. Show Answer Correct Answer: B) Substrate. 6. The monomer or building blocks of proteins are ..... A) Monosaccharides. B) Fatty acids. C) Amino acids. D) Nucleic acids. Show Answer Correct Answer: C) Amino acids. 7. Which of the following is a food source for a carbohydrate? A) Apple. B) Bread. C) Rice. D) All of the above. Show Answer Correct Answer: D) All of the above. 8. This type of bond results from an electronegative atom bonded to a hydrogen attracted to another electronegative atom. A) Polar covalent bond. B) Nonpolar covalent bond. C) Hydrogen bond. D) Ionic bond. Show Answer Correct Answer: C) Hydrogen bond. 9. What makes up the SIDES of a DNA ladder? A) Nitrogen bases. B) Sugars & phosphates. C) Genes & chromosomes. D) RNA. Show Answer Correct Answer: B) Sugars & phosphates. 10. A molecule that enzymes work on is? A) An ensyme. B) A substrate. C) A product. D) An active site. Show Answer Correct Answer: B) A substrate. 11. Rochelle's salt is used in which of the following solutions? A) Fehling's. B) Benedict's. C) Seliwanoff's. D) Molisch's. Show Answer Correct Answer: A) Fehling's. 12. Which of these biological functions is made more effective by the hydrogen-bonding properties of water? A) Lubrication of joints as a means of preventing injury. B) Sweating as a means of regulating body temperature. C) Transmitting signals and information as a means of body movement. D) Breathing as a means of taking in oxygen and releasing carbon dioxide. Show Answer Correct Answer: B) Sweating as a means of regulating body temperature. 13. Which of the big 4 is used for long-term energy storage, insulation, and protection? A) Lipids. B) Proteins. C) Nucleic acid. D) Carbohydrates. Show Answer Correct Answer: A) Lipids. 14. Which two body systems interact to send oxygen throughout the body? A) Nervous and Digestive. B) Excretory and Endocrine. C) Respiratory and Circulatory. D) Circulatory and Skeletal. Show Answer Correct Answer: C) Respiratory and Circulatory. 15. Water is classified as an inorganic compound because it A) Does not contain carbon. B) Does not contain nitrogen. C) Contains hydrogen. D) Contains oxygen. Show Answer Correct Answer: A) Does not contain carbon. 16. The enzyme and co-enzyme can beseparated easily by: A) Chemotheraphy. B) Surgery. C) Dialysis. D) Blood Transfusion. Show Answer Correct Answer: C) Dialysis. 17. What is another name for enzymes? A) Chemical catalysts. B) Microorganisms. C) Biological catalysts. D) Inorganic catalysts. Show Answer Correct Answer: C) Biological catalysts. 18. Polysaccharides are polymers of ..... A) Carbohydrates. B) Nucleic Acids. C) Proteins. D) Lipds. Show Answer Correct Answer: A) Carbohydrates. 19. This type of bond results from the gain or loss of electrons. A) Polar covalent bond. B) Nonpolar covalent bond. C) Hydrogen bond. D) Ionic bond. Show Answer Correct Answer: D) Ionic bond. 20. These lipids have all their carbon atoms fully filled with hydrogen atoms; found in animal fats and dairy products. A) Unsaturated fats. B) Saturated fats. C) Waxes. D) Steroids. Show Answer Correct Answer: B) Saturated fats. ← PreviousNext →Related QuizzesBiochemistry QuizzesBiochemistry Quiz 1Biochemistry Quiz 2Biochemistry Quiz 3Biochemistry Quiz 4Biochemistry Quiz 5Biochemistry Quiz 6Biochemistry Quiz 7Biochemistry Quiz 8Biochemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books