The building blocks for this molecule are A) amino acids B) simple sugars C) fats D) molecular bases

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1 1. Base your answer to the following question on the diagram below and on your knowledge of biology. The diagram represents a portion of a starch molecule. The building blocks for this molecule are A) amino acids B) simple sugars C) fats D) molecular bases 2. Glucose molecules are the building blocks of what class of macromolecule? A) Proteins B) Lipids C) Nucleotides D) Carbohydrates 3. Some structural formulas of organic molecules are shown below. Which structural formulas represent carbohydrate molecules? A) 1 and 5 B) 2 and 4 C) 3 and 2 D) 4 and 3

2 4. Base your answer to the following question on the information in the chart below and on your knowledge of biology. What is another characteristic of the compounds in class D? A) They are composed of basic subunits known as nucleotides. B) They contain the atoms carbon, hydrogen, and oxygen, with the hydrogen and oxygen in a 2:1 ratio. C) They transfer amino acids to ribosomes during protein synthesis. D) They include chemical compounds such as insulin and hemoglobin. 5. Which chemical formula represents a carbohydrate? A) CH4 B) C3H7O2N C) Cl2H22O11 D) CO2 6. Which compound is a polysaccharide? A) glucose B) maltase C) ribose D) starch 7. Which group of organic molecules includes glycogen and glucose? A) carbohydrates B) lipids C) nucleic acids D) proteins 8. Two examples of carbohydrates are A) fatty acids and glycerol B) fats and waxes C) sugars and starches D) amino acids and alcohol 9. Molecules consisting only of carbon, hydrogen, and oxygen atoms make up a large part of a plant cell wall. These molecules are classified as A) dipeptides B) proteins C) vitamins D) carbohydrates 10. Plants store carbohydrates in the form of A) amino acids B) fatty acids C) starch D) nucleic acids 11. In humans, excess glucose is stored as the polysaccharide known as A) glycogen B) glycerol C) maltose D) cellulose 12. Which organic compound is correctly matched with the subunit that composes it? A) maltose amino acid B) starch glucose C) protein fatty acid D) lipid sucrose

3 13. Base your answer to the following question on the diagram below. For each of the following phrases, select the molecule, chosen from those shown below, which is best described by that phrase. A molecule that results from all dehydration synthesis reactions A) 1 B) 2 C) 3 D) 4 E) The process by which glucose is converted to starch is known as A) protein hydrolysis B) dehydration synthesis C) chemical digestion D) cellular respiration 15. Base your answer to the following question on the equation below. 18. What is the major component of plasma membranes? A) Lipids B) Carbohydrates C) Nucleotides D) Proteins 19. What are the building blocks of lipids? A) Glucose B) Amino acids C) Fatty acids and glycerol D) Nucleic acids What does x most likely represent? A) a glycerol molecule B) a peptide bond C) a carboxyl group D) an enzyme 16. More energy can be released from a fat molecule than from a glucose molecule because the fat molecule contains more A) genes B) organic compounds C) chemical bonds D) mitochondria 17. Butter and oil are examples of food composed of A) carbohydrates B) lipids C) proteins D) nucleotides

4 20. Base your answer to the following question on on the chart below and your knowledge of Biology. Which belongs in section G? A) B) C) D) 21. Which organic compound is produced when three fatty acid molecules bond to one glycerol molecule? A) glycogen B) ATP C) PGAL D) a lipid 22. Animals commonly store energy in the form of A) fat and glycogen B) waxes and oils C) minerals and urea D) water and carbon dioxide 23. In living organisms, lipids function mainly as A) sources of stored energy and transmitters of genetic information B) sources of stored energy and components of cellular membranes C) transmitters of genetic information and catalysts of chemical reactions D) catalysts of chemical reactions and components of cellular membranes 24. Vegetable oils, such as corn oil, belong to which general class of organic substances? A) lipids B) proteins C) carbohydrates D) salts 25. The shape of a protein molecule directly determines its A) movements through the cytoplasm B) functions inside and outside of cells C) roles in building water molecules D) circulation throughout the body 26. The basic building blocks of a protein are A) glucose molecules B) amino acids C) hormones D) fats 27. What are the main atoms of a protein molecule? A) Carbon, hydrogen, nitrogen, and oxygen B) Nitrogen, oxygen, and phosphorous C) Oxygen, sulfur, and nitrogen D) Carbon, phosphorous, and hydrogen

5 28. The diagram below represents the synthesis of a portion of a complex molecule in an organism. Which row in the chart could be used to identify the building blocks and product in the diagram? A) 1 B) 2 C) 3 D) Which statement concerning proteins is not correct? A) Proteins are long, usually folded, chains. B) The shape of a protein molecule determines its function. C) Proteins can be broken down and used for energy. D) Proteins are bonded together, resulting in simple sugars. 30. An element found in all proteins but not found in carbohydrates and lipids is A) carbon B) hydrogen C) oxygen D) nitrogen 31. Every living cell contains molecules of A) cellulose B) chlorophyll C) protein D) hemoglobin 32. Two proteins in the same cell perform different functions. This is because the two proteins are composed of A) chains folded the same way and the same sequence of simple sugars B) chains folded the same way and the same sequence of amino acids C) chains folded differently and a different sequence of simple sugars D) chains folded differently and a different sequence of amino acids 33. If there were no nitrogen compounds in the soil, the most immediate effect on plants growing in that soil would be difficulty in synthesizing A) amino acids and proteins B) glucose and polysaccharides C) monosaccharides and cellulose D) fatty acids and lipids 34. The way a protein molecule is folded determines the shape of the molecule, which determines the A) function of that protein B) structure of ATP containing that protein C) type of simple sugars in that protein D) amino acids in that protein