A goiter is an enlarged form of which gland?
a. adrenal
b. pancreas
c. thyroid
d. parathyroid
e. thymus
C
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Autotrophy has been observed among the ________.
A. cyanobacteria B. extreme thermophiles C. methanogens D. All of the choices are correct.
The homeostatic interaction between the endocrine system and which other system is demonstrated by
the hypothalamus regulating the release of sex hormones? a. circulatory system b. reproductive system c. digestive system d. muscular system e. urinary system
A college campus — including the students, birds, trees, sidewalks, and air — makes up one complete ________
A) community B) ecosystem C) population D) organism
In many arthropods, body segments have become fused into functional groups called ________.
Fill in the blank(s) with the appropriate word(s).