Insulin, a biological macromolecule (a protein), is a polymer produced by the beta cells of the pancreas. Given the characteristics of the original, primitive Prokaryote cells, which of the following is likely to be true? a) This polymer is a linear sequence (Chain) of amino acids b) The monomers are linked by dehydration synthesis. c) When the monomers are connected to form the polymer using the process of dehydration synthesis a covalent bond links the monomers, d) The structure of this type of polymer presents the R groups as extending off of the chain, e) All are true.

Which of the following is true for the tRNA of eukaryote cells? tRNA is a) made of DNA and protein, b) the active site in carbohydrate synthesis, c) is a subunit that forms mRNA from the codon of DNA. d) found inside the endoplasmic reticulum, e) has the specific sequence of bases (anti codon) that interacts with the base sequence (codon) of mRNA.

Which of the following describes a purpose for the function of phosphoglucoisomerase? a) allows for phosphorylation for trapping the molecule in the cell b)promotes substrate level phosphorylation and formation of ATP c) allows formation of a primary alcohol necessary for the next step of phosphorylation d)facilitates epimerization, the change in stereochemistry at one chiral carbon

An intermediate folding stage seen in protein denaturation or renaturation is called : a) domain  b)  motif   c)  subunit  d)  molten globule Proteins which do not renature spontaneously when denaturation conditions are removed may need the assistance of: a) a prosthetic group b)  a higher salt concentration   c)  a lower temperature  d)  a chaperone protein The information needed for correct protein folding is encoded in: a) the surrounding molecules  b)  the protein’s amino acid sequence  c)  the pH of the aqueous medium  d)  the electrolyte composition of the aqueous solution