Although about percent of U. S. births are to single, never-married mothers, only about percent of 6- to 11-year-olds live with single, never-married mothers, as many such mothers marry or entrust their children to their parents' care.

Samuel is a 63-year-old single man who works full time in a food processing plant. he has a history of esophageal cancer, which was treated successfully with anti-cancer drugs and surgery four years ago. his weight had been stable at 135 pounds until 6 months ago. since then, he has experienced an involuntary weight loss of 10 pounds. he complains of a poor appetite and being overly weak, tired, and irritable. he also complains of cracks at the corners of his mouth and a chronic sore throat, which concerns him, given his cancer history. his usual diet is fairly consistent. he states that he rarely eats breakfast because he starts work at 6 a.m. he eats two deli meat sandwiches, "usually pastrami or salami," and a soda at 10 a.m., and may eat a candy bar in the afternoon when he gets off work. he often prepares and eats a frozen dinner or pizza at home in the evening and routinely drinks "about four or five beers" before going to bed. occasionally, he cooks roast and mashed potatoes for dinner and may have cereal with milk for a snack before bed. he rarely eats vegetables or fruit. 1. considering samuel's alcohol consumption, which b vitamin may he be deficient in? a. pantothenic acid b. niacin c. riboflavin d. biotin e. thiamin

Some viruses can be crystallized and their structures analyzed. one such virus is yellow mottle virus, which infects beans. this virus has a single-stranded rna genome containing about 6300 nucleotides. its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.if the yellow mottle virus begins its infection of a cell by using its genome as mrna, which of the following would you expect to be able to measure? a) replication rateb) transcription ratec) translation rated) formation of new transcription factors

A35-year-old woman arrives on the floor after an uneventful hysteroscopy to evaluate her long history of uterine fibroids. about 30 minutes after her arrival, she begins to complain of nausea and has two episodes of vomiting. the physical administers 0.625 mg of droperidol and 400 mg of acetaminophen by mouth. on follow-up evaluation, the patient's neck is involuntarily flexed to one side. she is alert, oriented, and conversation and has an otherwise normal neurological examination. which of the following is the most likely diagnosis? - cerebral vascular accident- conversion disorder- dystonic reaction to droperidol- munchausen syndrome- seizure