________ are turned on or off by regulatory proteins in accordance with changing needs for the ________ they encode.
A. Genes; ribosomes
B. Enzymes; products
C. Proteins; genes
D. Ribosomes; proteins
E. Genes; proteins
Answer: E
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Define iatrogenic
What will be an ideal response?
How does the mucosa of the rectum compare with that of the colon and cecum?
a. the rectum is lined with stratified columnar epithelium, whereas the colon and cecum are lined with simple columnar epithelium b. the colon and cecum are lined with a simple columnar epithelium for absorption, whereas the rectum is lined with stratified squamous epithelium because it is next to an opening to the exterior c. the colon and cecum are lined with a simple cuboidal epithelium for absorption, whereas the rectum is lined with transitional epithelium to allow for expansion during defecation d. none of the listed responses is correct; the epithelial lining is constant throughout the large intestine
Constipation:
A. is associated with symptoms caused by accumulation of toxins present in feces. B. is caused by failure to defecate at least once a day. C. may be prevented by ingestion of foods with a high proportion of cellulose and other indigestible carbohydrates. D. results in metabolic acidosis. E. occurs in people who are lactose intolerant when they drink milk.
Osmoreceptor cells in the hypothalamus are involved in the secretion of
A. growth hormone. B. aldosterone. C. antidiuretic hormone. D. adrenocorticotropic hormone. E. parathyroid hormone.