Nate is gaining weight, is often tired, and feels cold. His thyroid hormone level is high as is the level of TSH. Nate also has a goiter. Which of these diagnoses is the most likely for Nate's condition?
A) defective thyroid hormone receptors in his body cells
B) insufficient iodine in his diet
C) defective receptors for thyroid hormone control by the anterior pituitary
D) too much iodine in the diet
A
You might also like to view...
The coelom forms in two different ways. Which of the following statements best compares those ways?
A. In schizocoelous development a solid mass of mesoderm splits to form the coelom whereas in enterocoelous development a layer of mesoderm cells forms a pocket off of the developing gut to form the coelom. B. In enterocoelous development a solid mass of mesoderm splits to form the coelom whereas in schizocoelous development a layer of mesoderm cells forms a pocket off of the developing gut to form the coelom. C. In enterocoelous development the coelom forms inside the mesoderm whereas in schizocoelous development the coelom forms on the outside of the mesoderm. D. In schizocoelous development the coelom forms within the mesoderm whereas in enterocoelous development, no coelom is formed at all. E. Schizocoelous and enterocoelous both form the coelom in identical ways, the difference merely being that the term schizocoelous is used only for deuterostomes and enterocoelous is used only for protostomes.
Answer the question using the accompanying figure. According to the graph, which biomes are defined by a mean
annual precipitation under 50 cm?
a. tropical forest, desert, and savanna b. temperate deciduous forest, savanna, and tropical forest c. boreal forest, temperate deciduous forest, and tundra d. desert, tundra, and chaparral e. desert, tundra, and grassland
Which of the following produces histamine in response to an allergic reaction?
a. mast cell b. macrophage c. cytokine d. interferon
In a eukaryotic cell that is undergoing cell division, what will become a new chromosome?
A) A locus B) A centromere C) A chromatid D) A telomere