In epithelial cells of the epidermis, the intermediate filament proteins that attach hemidesmosomes and desmosomes to the cytoplasm are made of__________ which is synthesized on _______________.

Epidermolysis bullosa is an inherited disease where keratinocytes separate from the dermis. You would expect that the mutations which cause this disease to be genes that encode for proteins found in:

A relatively small number of genes appear to account for much of the variation in skin color observed in humans. Two genes that have undergone positive selection in northern latitudes are OCA2 in Asian populations and SLC24A5 in European populations. In the ancestral African population, the SLC24A5 gene produces a protein with an alanine at amino acid position 111. In the European population the amino acid at position 111 is threonine. The protein that is produced from the SLC24A5 gene exchanges an ion of Na+ from the cell cytoplasm for a Ca2+ ion on the outside of the cell. This exchange appears to be necessary for normal melanin synthesis. In East Asian populations, the OCA2 gene produces a protein with the amino acid arginine at position 618 whereas the ancestral amino acid at that position is histidine. For both genes, the mutation arises from a single base change called a Single Nucleotide Polymorphism The mutations in the SLC24A5 gene affects protein expression in ___________________ while the pigments produced and secreted from these cells are taken up by __________________.

Which of the following would you expect to have no glycosylated amino acids?

Hydrogen bonding between the carbonyl oxygen of one amino acid and the hydrogen on the amine of a nearby amino acid in an i + 4 arrangement is responsible for the _______ structure in proteins.

The enzymes that catalyze the formation of phosphodiester bonds between adjacent 5 carbon sugars function in the:

Between the time when pre mRNA is generated and when introns are removed from it, a type of RNA called SnoRNA adds a methyl group to some bases in the pre mRNA. From what you know about RNA processing, you would expect these enzymes to function in the:

Which of the following processes would be required to prepare a laryngeal mirror for the next patient’s examination?

Which of the following materials is NOT used to disinfect exam room surfaces?

Which of the following is NOT true concerning the lighting in an exam room prepared for a visually impaired patient?