Choose the mineral that is only needed in trace amounts by the body.
A. Calcium
B. Sodium
C. Potassium
D. Iron
Answer: D
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What type of cells form the proximal convoluted tubule?
A. simple cuboidal epithelium with microvilli B. stratified squamous epithelium C. pseudostratified ciliated columnar epithelium D. simple columnar cells with microvilli and cilia
Distinguish between these statements, explaining what is correct or incorrect about each, and what requires clarification. Relate your answers to the energy hill concept from the previous chapter.
A. Passive transport requires energy. B. Active transport requires energy. C. Vesicular transport requires energy.
Insulin is produced by:
a. Alpha cells in the pancreatic isles b. Chief cells in the stomach c. Beta cells in the pancreatic islets d. Alpha cells in the adrenal medulla e. Parafollicular cells in the thyroid gland
Compare oxyhemoglobin with deoxyhemoglobin
A) Oxyhemoglobin is hemoglobin whose iron has bound carbon dioxide. Deoxyhemoglobin is hemoglobin whose iron has bound oxygen. B) Oxyhemoglobin is hemoglobin whose iron has bound oxygen. Deoxyhemoglobin is hemoglobin whose iron has not bound oxygen. C) Oxyhemoglobin is hemoglobin whose iron has not bound oxygen. Deoxyhemoglobin is hemoglobin whose iron has bound oxygen. D) Oxyhemoglobin is hemoglobin whose iron has bound both oxygen and carbon dioxide. Deoxyhemoglobin is hemoglobin whose iron has bound oxygen only. E) Oxyhemoglobin is hemoglobin whose iron has bound oxygen only. Deoxyhemoglobin is hemoglobin whose iron has bound both oxygen and carbon dioxide.