Why are pituitary tumors so dangerous?
What will be an ideal response?
The pituitary gland secretes many releasing and inhibiting hormones. Over- or underproduction of these hormones disrupts the function of the adrenal gland (via ACTH), the reproductive organs (via LH and FSH), cell metabolism (via TSH), and cell growth (via growth hormone).
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What is the only known eusocial mammal?
A. humans B. naked mole rats C. beavers D. prairie dogs E. honeybees
Keystone species are those that ________
a. modify the pioneer environment, allowing subsequent stages in succession to occur b. after introduction, become established and disruptive to the native structure of a community c. have a disproportionate effect on a community relative to their abundance d. provide the photosynthetic plant base necessary to all communities
Pure water without applied pressure has a water potential that is equal to
A. 1.6 MPa. B. 0.0 MPa. C. atmospheric pressure. D. infinity. E. -2.0 MPa.
If a woman of blood type A has a child of blood type O, the father must have ____
a. blood type A, AB, or O, but not B b. blood type O only c. blood type A, B, or O, but not AB d. any blood type other than type A e. blood type A only