This quiz works best with JavaScript enabled. Home > Biochemistry > General > Biochemistry – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 15 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following macromolecules is responsible for controlling cell activities? A) Carbohydrates. B) Lipids. C) Nucleic acids. D) Proteins. Show Answer Correct Answer: C) Nucleic acids. 2. Copper sulfate is a/an A) Strong oxidising agent. B) Weak oxidising agent. C) Strong reducing agent. D) Weak reducing agent. Show Answer Correct Answer: A) Strong oxidising agent. 3. A peptide is a compound consisting of 2 or more ..... A) Amino acids. B) Nucleic acids. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: A) Amino acids. 4. The Basic Unit of life A) Cell. B) Atom. C) Molecule. D) Tissue. Show Answer Correct Answer: A) Cell. 5. This type of atomic bond forms between polar substances, like water. A) Covalent Bonds. B) Ionic Bonds. C) Hydrogen Bonds. D) Metallic Bonds. Show Answer Correct Answer: C) Hydrogen Bonds. 6. Will and Juan decided to make a snack after school:peanut butter and jelly sandwiches and a glass of cold milk. They assembled the following ingredients:-whole wheat bread -peanut butter -grape jelly -whole milk Which food likely has the FEWEST calories per gram of serving and why? A) Peanut butter because it contains plant-based fats. B) Grape jelly because it is mostly simple sugars. C) Whole wheat bread because it contains a combination of complex carbohydrates, simple sugars, and plant-based, unsaturated fats. D) Whole milk because most of the animal fat remains. Show Answer Correct Answer: B) Grape jelly because it is mostly simple sugars. 7. Proteins are composed of what smaller building blocks? A) Amino acids. B) Nucleic acids. C) Fatty acids. D) Nucleotides. Show Answer Correct Answer: A) Amino acids. 8. Which best describes the role of hemoglobin in red blood cells? A) It hydrates human body tissues. B) It supplies support to human body tissues. C) It transports oxygen to human body tissues. D) It increases the rate of reactions in body tissues. Show Answer Correct Answer: C) It transports oxygen to human body tissues. 9. All of the following are Lipids except ..... A) Fatty Acids. B) Steroids. C) Starch. D) Phospholipids. Show Answer Correct Answer: C) Starch. 10. The ..... structure of a protein is the sequence of its amino acids. A) Primary. B) Secondary. C) Tertiary. D) Quartenary. Show Answer Correct Answer: A) Primary. 11. Which is false? A) Enzymes bind to a substrate. B) Enzymes slow down chemical reactions. C) Enzymes lower the activation energy. D) Enzymes are affected by temperature and pH. Show Answer Correct Answer: B) Enzymes slow down chemical reactions. 12. Made of monomers of monosaccharides A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: A) Carbohydrates. 13. Which of these breakfast foods will provide you with the most energy? A) Candy bar. B) Whole grain cereal or oatmeal. C) Potato chips. D) None of above. Show Answer Correct Answer: B) Whole grain cereal or oatmeal. 14. Organic molecules are organic because they contain ..... A) Oxygen. B) Hydrogen. C) Water. D) Carbon. Show Answer Correct Answer: D) Carbon. 15. Which sequence of DNA bases would pair with this partial strand ATG TGA CAG A) ATG TGA CAG. B) TAC ACT GTC. C) GTA AGT GAC. D) CAT TCA CTG. Show Answer Correct Answer: B) TAC ACT GTC. 16. DNA & RNA are examples of this type of macromolecule. A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: D) Nucleic Acids. 17. What level of protein structure is the order and sequence of amino acids? A) Primary. B) Secondary. C) Tertiary. D) Quaternary. Show Answer Correct Answer: A) Primary. 18. All of the following are correct about enzymes EXCEPT? A) They enable reactions to occur that would not normally occur. B) They lower the energy activation. C) They are polymers of amino acids. D) They generally denature at temperatures above 40 degrees Celsius. Show Answer Correct Answer: A) They enable reactions to occur that would not normally occur. 19. Enzymes play a key role in many biochemical processes; one of these roles is to speed up a reaction. An enzyme speeds up a reaction by ..... A) Releasing energy. B) Decreasing the activation energy. C) Absorbing energy. D) Increasing the activation energy. Show Answer Correct Answer: B) Decreasing the activation energy. 20. What is/are the function(s) of carbohydrates? A) Storing genetic information. B) Producing glucose. C) Storage and structure. D) Building membranes. Show Answer Correct Answer: C) Storage and structure. ← 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