Why is Graves’ disease dangerous? What will be an ideal response?
At first blush, the idea of having extra energy and racing metabolism may seem tempting to many of
us, and the excess of thyroid hormone that is associated with Graves’ disease can provide this.
However, running your body this ‘fast’ will also cause it to wear out more quickly. You might liken it
to a regular car versus a race car. Driven at low speeds, your car engine will likely function for more
than 100 000 miles. But a race car at high speeds only lasts a few hundred miles. Thus, it is critical to
slow the body down to assure a long and healthy life.
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Plasma cells come from
a. T cells. b. dendritic cells. c. B cells. d. macrophages. e. monocytes.
The cytoplasm of a cell is made up of which of the following?
a) the plasma membrane and cytosol b) the cytosol and the nucleus c) the plasma membrane and organelles d) the cytosol and organelles e) the organelles and the nucleus
Before a stoma opens:a
the level of carbon dioxide inside the leaf increases. b. potassium ions are actively transported out of guard cells. c. potassium ions are actively transported into guard cells. d. the turgor pressure inside the guard cells decreases. e. water moves by osmosis out of the guard cells.
In feedback inhibition, the inhibiting molecule is often the
a. substrate of the inhibited enzyme. b. product of the inhibited enzyme. c. first unique molecule in the pathway. d. end product of the pathway.