1 The polymerization reactions that form proteins are __________ reactions. (39.0K)A) addition B) condensation C) cross-linking D) double displacement 2 Simple sugars are called (37.0K)A) monosaccharides B) disaccharides C) polysaccharides D) sucrose 3 What molecule is necessary for sucrose to break down into fructose and glucose? (44.0K)A) ethyl alcohol B) carbon tetrachloride C) ethene D) water 4 More than 95% of the atoms in your body are these four elements.A) oxygen, carbon, hydrogen, and nitrogen B) iron, phosphorus, carbon, and hydrogen C) oxygen, hydrogen, calcium, and carbon D) hydrogen, iron, silicon, and oxygen 5 Proteins are polymers made up of these monomers.A) amino acids B) alkenes C) hexoses D) vitamins 6 In proteins, these structures are held together by hydrogen bonds, ionic bonds, and disulfide cross-links.A) amino acids B) carbon atoms C) monomers D) polypeptides 7 Animals store energy in their livers and muscles as __________.A) glycogen B) starch C) glucose D) sucrose 8 These are biological compounds that contain a large proportion of C-H bonds and less oxygen than carbohydrates.A) bones B) lipids C) sugars D) substrates 9 Fatty acids bond to glycerol molecules to form __________.A) triglycerides B) polypeptides C) polysaccharides D) proteins 10 DNA and RNA are the two kinds of __________ found in cells.A) carbohydrates B) lipids C) nucleic acids D) steroids 11 The specific sequence of bases in an organism's DNA forms its __________.A) genetic code B) RNA C) nucleus D) thymine 12 __________ are organic molecules that are required in small amounts in the diet.A) Carbohydrates B) Lipids C) Proteins D) Vitamins 13 chain of 15 amino acids joined by peptide bonds is called a(n) __________.A) enzyme B) peptide C) polypeptide D) protein 14 By what type of reaction are monosaccharides linked together to form disaccharides?A) addition B) combustion C) condensation D) dehydration 15 The sum of all the chemical reactions necessary for the life of an organism is its __________.A) digestion B) locomotion C) metabolism D) respiration