Is the bolded statement TRUE or FALSE? The primary and secondary structure of proteins represent the first two levels in the hierarchy of protein structure. Classify the following statements as true or false. 46. The primary structure is held together by hydrogen bonds.  47. An α-helix will be destablized by the placement of an Arg four amino acids away from a Glu at pH 7.0. 48. The hydrophobic effect is the primary stabilizing interaction for formation of secondary structures.49. An α-helix will have phi/psi angles similar to that of a β-sheet. 50. Parallel and antiparallel β-sheets are made of strands that have R-groups that face perpendicular to the plane of the sheet and alternate sides of the sheet.

List the names of B vitamins.

The nutrient essential for synthesis of several blood clotting factors is vitamin

In general, excess amounts of water-soluble vitamins are excreted via the

Efficient deposition of calcium and phosphorus in bones is the net effect of

Name the Fat Soluble and Water Soluble Vitamins.

Which of the following does not describe fat-soluble vitamins?

Which of the following is the best copper source?

Overconsumption of vitamins A and E can do all the following except

Intestinal bacteria can make this B vitamin.