52) What do polysaccharides and proteins have in common? A) They are all lipids. B) They are all carbohydrates. C) They are all built of chemically linked monomers. D) They are all amino acids. 53) Enzymes are A) phospholipids B) monosaccharides C) amino acids D) proteins 54) Which of the following help provide stability and form the plasma (cell) membrane of cells? A) cholesterol B) glycoproteins D) waxes. C) phospholipids B) it contains genetic infomation. 55) What important role does glucose play as biological molecule? A) it is the main molecule found in cells. C) it contains chemical energy. 56) Fatty acids which are increasingly saturated are D) it is the nutrient storage form in plants. A) more liquid in room temperature and are healthy fats. B) more liquid in room temperature and can cause heart disease. C) more solid in room temperature and can cause heart disease. D) more solid in room temperature and are healthy fats. 57) Chitin and cellulose are examples of: A) disacchrides. C) structural polysaccharides. B) monosaccharides. D) storage polysaccharides. 58) Which of the following lipids is the primary component in cell membranes? A) phospholipids B) triglycerides 59) Nucleotides are the building blocks for:" A) proteins. B) disaccharides. C) cholesterol C) lipids. 60) Proteins that are composed of more than one polypeptide chain are said to have, A) tertiary B) quaternary C) primary 61) In the following chemical reaction, which molecule is the disaccharide? glucose + fructose-sucrose + water A) fructose B) glucose 62) All of the following are functions of proteins except: A) serving as transport molecules. C) storing genetic information. C) water D) steroids D) DNA, and RNA. structure. D) secondary D) sucrose B) serving as structural building materials. D) hormone activity. 63) Which of the following is the nutrient storage polysaccharide that is found in plants? A) starch B) cellulose C) chitin 64) Alpha helices and beta pleated sheets are examples of a protein, A) quaternary structure. C) tertiary structure. B) secondary structure. D) primary structure. D) glycogen