1. the secondary structure of proteins is formed by _. a) polar bonds b) nonpolar bonds c) ionic bond d)…

1. the secondary structure of proteins is formed by _. a) polar bonds b) nonpolar bonds c) ionic bond d) hydrogen bonds e) peptide bond 2. which of the following chemicals is not a monosaccharide? a) glucose b) fructose c) ribose d) maltose e) galactose 3. which of the following chemicals is not an isomer of the rest? a) glucose b) ribose c) galactose d) fructose 4. triglycerides are made of three fatty acids and _. a) amino acid b) glucose c) glycerol d) ethanol e) nucleotide 5. rna is made of all of the following except _. a) ribose b) adenine c) deoxyribose d) phosphate group e) cytosine

1. the secondary structure of proteins is formed by _. a) polar bonds b) nonpolar bonds c) ionic bond d) hydrogen bonds e) peptide bond 2. which of the following chemicals is not a monosaccharide? a) glucose b) fructose c) ribose d) maltose e) galactose 3. which of the following chemicals is not an isomer of the rest? a) glucose b) ribose c) galactose d) fructose 4. triglycerides are made of three fatty acids and _. a) amino acid b) glucose c) glycerol d) ethanol e) nucleotide 5. rna is made of all of the following except _. a) ribose b) adenine c) deoxyribose d) phosphate group e) cytosine

Answer

Brief Explanations:

  1. The secondary structure of proteins is stabilized by hydrogen - bonds between the backbone atoms.
  2. Monosaccharides are the simplest form of carbohydrates. Glucose, fructose, ribose, and galactose are monosaccharides, while maltose is a disaccharide.
  3. Glucose, galactose, and fructose are hexoses (6 - carbon sugars) and are isomers of each other. Ribose is a pentose (5 - carbon sugar).
  4. Triglycerides are esters formed from three fatty acids and glycerol.
  5. RNA is composed of ribose sugar, phosphate groups, and nitrogenous bases (adenine, cytosine, guanine, uracil). Deoxyribose is found in DNA, not RNA.

Answer:

  1. d) hydrogen bonds
  2. d) maltose
  3. b) Ribose
  4. c) glycerol
  5. c) deoxyribose