About 4% of people of northern European descent are carriers for an autosomal recessive genetic disorder in which a defective membrane transport protein leads to abnormal chloride levels in extracellular fluids. What is the name of this disorder?
a. Duchenne muscular dystrophy
b. cystic fibrosis
c. achondroplasia
d. sickle cell anemia
Answer: b. cystic fibrosis
You might also like to view...
The lacA gene found within the lac operon encodes for galactosidase transacetylase. This enzyme attaches a(n) ________ group to lactose and lactose analogs.
A. amino B. hydroxyl C. carbonyl D. acetyl E. carboxyl
Your instructor has assigned you the task of identifying an unknown fungus. When you examine the cellular structure under the microscope, you note that the cells are flagellated. To which group does the unknown fungus belong?
A. chytrids B. choanflagellates C. yeasts D. conidia E. bread molds
Traditionally, chymotrypsin used in the food
industry was obtained from
a. mold fermentation. b. yeast fermentation. c. sheep stomachs. d. bacterial fermentation. e. calf stomachs
Don Johansson found the skull of Lucy at Hadar in Ethiopia
a. true b. false