5 Written Questions

1. A recessively inherited human blood disorder in which a single nucleotide change in the '-globin gene causes hemoglobin to aggregate, changing red blood cell shape and causing multiple symptoms in afflicted individuals. valine replaces glutamic acid
2. 
   One of two types of nitrogenous bases found in nucleotides, characterized by a six-membered ring fused to a five- membered ring. Adenine (A) and guanine (G) are purines.
3. carbohydrates, proteins, and nucleic acids
4. at the center of an amino acid is an asymmetric carbon atom
5. granules within cellular structures where starch is stored

5 Matching Questions

1. Acidic amino acids
2. receptor proteins
3. enzymatic proteins
4. transport proteins
5. peptide bond

1. a response of cell to chemical stimuli
2. b are those with the side chains that are negatively charged
3. c transport of substances
4. d selective acceleration of chemical reactions
5. e The covalent bond between the carboxyl group on one amino acid and the amino group on another, formed by a dehydration reaction

5 Multiple Choice Questions

1. 
   A fatty acid that has one or more double bonds between carbons in the hydrocarbon tail. Such bonding reduces the number of hydrogen atoms attached to the carbon skeleton
   1. fatty acids
   2. saturated fatty acid
   3. unsaturated fatty acid
   4. storage proteins
2. n proteins, a process in which a protein loses its native shape due to the disruption of weak chemical bonds and interactions, thereby becoming biologically inactive; in DNA, the separation of the two strands of the double helix. occurs under extreme (noncellular) conditions of pH, salt concentration, or temperature.
   1. catalyst
   2. N-terminus
   3. cystein
   4. Denaturation
3. A sugar (monosaccharide) or one of its dimers (disaccharides) or polymers (polysaccharides)
   1. catalyst
   2. Amylose
   3. carbohydrates
   4. trans fat
4. A structural polysaccharide of plant cell walls, consisting of glucose monomers joined by β glycosidic linkages
   1. Amylose
   2. cellulose
   3. Glucose
   4. β glucose
5. A protein complex that assists in the proper folding of other proteins
   1. proteios
   2. protein
   3. purines
   4. cahperonins

5 True/False Questions

1. defensive proteins → response of cell to chemical stimuli

   True        False

2. ribose →
   The sugar component of RNA nucleotides

   True        False

3. β pleated sheet →
   hydroxyl group attached to the number 1 carbon is positioned above the plane of the ring. each "upside down" compared to its neighbor

   True        False

4. cystein → "first" or "primary"

   True        False

5. storage proteins → shaped like long fibers

   True        False