This quiz works best with JavaScript enabled. Home > Agriculture > Biochemistry > General > Biochemistry – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 14 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which biomolecule is mainly hydrocarbons and therefore very hydrophobic? A) Lipid. B) Carbohydrate. C) Nucleic acid. D) Protein. Show Answer Correct Answer: A) Lipid. 2. Stomach cells need to package and secrete large amounts of enzymes for use in digestion. Which of the following organelles would be found in a higher-than-normal frequency in stomach cells? A) Ribosomes. B) Golgi apparati. C) Chloroplasts. D) Lysosomes. Show Answer Correct Answer: B) Golgi apparati. 3. All atoms want how many electrons to be 'happy'? A) 5 or 6. B) 7 or 12. C) 8 or 9. D) 2 or 8. Show Answer Correct Answer: D) 2 or 8. 4. Lactose is composed of A) Glucose + fructose. B) Glucose + sucrose. C) Glucose + glucose. D) Glucose + galactose. Show Answer Correct Answer: D) Glucose + galactose. 5. Fatty acids such as butter and oils and phospholipids are examples of this organic molecule: A) Nucleic Acids. B) Lipids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: B) Lipids. 6. When these bond together, they form a protein A) Nucleotides. B) Ribose. C) Peptide Bonds. D) Amino Acids. Show Answer Correct Answer: D) Amino Acids. 7. What makes up a protein? A) Amino Acid. B) Disaccharide. C) Fatty Acid. D) Monosaccharide. Show Answer Correct Answer: A) Amino Acid. 8. Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why? A) The insects are light enough so they do not break the hydrogen bonds holding the water molecules together (cohesion). B) The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet. C) The insect's feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water's surface. D) The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next. Show Answer Correct Answer: A) The insects are light enough so they do not break the hydrogen bonds holding the water molecules together (cohesion). 9. ATP is called a cell's "energy currency" because A) ATP catalyzes all metabolic reactions. B) Most of the energy that drives metabolism is supplied by ATP. C) Glucose is made of ATP. D) ATP allows one organelle to be exchanged for another between cells. Show Answer Correct Answer: B) Most of the energy that drives metabolism is supplied by ATP. 10. What type of substance is made up of atoms held together by covalent bonds? A) Element. B) Isotope. C) Ion. D) Molecule. Show Answer Correct Answer: D) Molecule. 11. Proteins have many different functions in a cell. Which of the following are possible functions of a protein? A) Catalysts and building blocks of DNA. B) Enzymes and actively transports molecules across the cell membrane. C) Building blocks of DNA and structural components of cell membrane. D) Components of the cell membrane and main source of energy in cellular respiration. Show Answer Correct Answer: B) Enzymes and actively transports molecules across the cell membrane. 12. Monosaccharides are the monomers for which major macromolecules? A) Photosythesis. B) Monosaccharides. C) Carbohydrates. D) None of above. Show Answer Correct Answer: C) Carbohydrates. 13. Proteins are compounds formed in the cells of plants and animals. Which element is included in every protein molecule? A) Carbon. B) Sodium. C) Fluorine. D) Calcium. Show Answer Correct Answer: A) Carbon. 14. Dopamine and Epinephrine are derived from: A) Tyrosine. B) Glutamic acid. C) Tryptophan. D) Valine. Show Answer Correct Answer: A) Tyrosine. 15. What is the ratio carbon:hydrogen:oxygen in carbohydrates? A) 1:1:1. B) 2:1:1. C) 1:2:1. D) 2:1:2. Show Answer Correct Answer: C) 1:2:1. 16. What determines the code, or information, of a DNA molecule? A) The color of the nitrogen bases. B) The shape (structure) of the nitrogen bases. C) The order (sequence) of the nitrogen bases. D) The frequency (number) of nitrogen bases. Show Answer Correct Answer: C) The order (sequence) of the nitrogen bases. 17. ..... = energy storage for animals in liver & muscles A) Starch. B) Glycogen. C) Cellulose. D) Chitin. Show Answer Correct Answer: B) Glycogen. 18. Why do lipids provide longer lasting energy than Carbohydrates? A) They have more Oxygen. B) They have fewer C-H bonds. C) They have many more C-H bonds. D) They have less Oxygen. Show Answer Correct Answer: C) They have many more C-H bonds. 19. Which of the following processes generates the most ATP? A) Fatty acid oxidation. B) Glycogenolysis. C) Citric acid cycle. D) Glycolysis. Show Answer Correct Answer: A) Fatty acid oxidation. 20. It serve as a minicirculatory system for the cell because it provides a network of channels for carrying substances from one part of the cell to another A) Golgi Apparatus. B) Ribosomes. C) Endoplasmic reticulum. D) Nucleus. Show Answer Correct Answer: C) Endoplasmic reticulum. 21. The three elements that make up most of all 4 types of macromolecules A) Nitrogen, Hydrogen, & Oxygen. B) Carbon, Hydrogen, & Oxygen. C) Nitrogen, Phosphorus, & Sulfur. D) Water, Oxygen, & Hydrogen. Show Answer Correct Answer: B) Carbon, Hydrogen, & Oxygen. 22. An anthocyanin found in cabbage is used as a indicator in pH papers is called ..... A) Flavin. B) Flaveine. C) Flavone. D) Flavine. Show Answer Correct Answer: A) Flavin. 23. Which of the following lists the bonds in order from weakest to strongest? A) Ionic, Covalent, Hydrogen. B) Hydrogen, Covalent, Ionic. C) Covalent, Hydrogen, Ionic. D) Hydrogen, Ionic, Covalent. Show Answer Correct Answer: B) Hydrogen, Covalent, Ionic. 24. Neutrons have a ..... charge. A) Positive. B) Negative. C) Neutral. D) None of above. Show Answer Correct Answer: C) Neutral. 25. Which of the following is not a type of lipid polymer? A) Phospholipids. B) Steroids. C) Meat. D) Triglycerides. Show Answer Correct Answer: C) Meat. 26. Water is essential to all living things. One important attribute of water allows it to maintain a constant environment within cells. Which property of water allows it to do this? A) Moderates temperature. B) Surface tension of water surface. C) Expansion of water when it freezes. D) Breaking of covalent bonds. Show Answer Correct Answer: A) Moderates temperature. 27. This particle has a neutral charge A) Atom. B) Electron. C) Neutron. D) Proton. Show Answer Correct Answer: C) Neutron. 28. What resembles the structure of the peptide bond? A) Biuret. B) Millon's reagent. C) Any of the anteriors. D) Xanthoproteic process. Show Answer Correct Answer: A) Biuret. 29. A pure substance that cannot be broken down into any other substance by chemical or physical means. There are about 100 of us shown in the Periodic Table A) Mixture. B) Compound. C) Element. D) Molecule. Show Answer Correct Answer: C) Element. 30. What is the function of proteins? A) Build skin, hair, nails, muscles. B) Store genetic information. C) Store energy (short-term). D) Store energy (long-term). Show Answer Correct Answer: A) Build skin, hair, nails, muscles. ← 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