An important reason that the nervous system and the endocrine systems are closely linked is _____
a. neurons and endocrine cells develop from an embryo’s ectodermal layer
b. produce the same outcomes
c. are regulated by the adrenal cortex
d. are homologous
e. are regulated by the brain
ANSWER: a
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A. inversions B. deficiencies C. gene duplications D. simple translocations E. None of the answers are correct
PCR typically results in the generation of fragments of all sizes
Indicate whether this statement is true or false.
Tamoxifen blocks the activity of estrogen in ____, but increases the activity of estrogen in ____
a. breast tissue; ovarian tissue b. uterine tissue; ovarian tissue c. uterine, tissue; breast tissue d. breast tissue; uterine tissue e. brain tissue; breast tissue
The animal in the above diagram has
a. an open circulatory system. b. no capillaries. c. a closed circulatory system. d. spaces in the tissues for blood to pool in. e. none of these