________ is the substrate of ________.
A. Glucose; lactose
B. Lactose; lactase
C. Sucrase; sucrose
D. Lactase; glucose
E. Galactose; lactose
Answer: B
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The enamel of the mammalian tooth is composed of crystals of
A) Calcium carbonate. B) Calcium fluoride. C) Calcium phosphate. D) Calcium chloride.
Which occurs during the secretion of hydrochloric acid by gastric epithelial cells?
A. Bicarbonate ions are secreted into the hepatic portal circulation. B. There is a decrease in the pH of blood in the hepatic portal circulation. C. Both H+ and K+ are actively pumped from the epithelial cell cytosol into the lumen of the stomach. D. Chloride ions are pumped from the cytosol of the gastric epithelial cells into the hepatic portal circulation blood. E. Vesicles containing H+/K+ -ATP-ase proteins are endocytosed into vesicles within the gastric epithelial cells.
Here is a figure showing major trunk cavities and other structures. What does "D" represent?
A. diaphragm B. mediastinum C. pelvic cavity D. thoracic cavity E. abdominal cavity
The brachioradialis is named for its
A. function and orientation. B. origin and insertion. C. location and size. D. function and size. E. type and shape.