Which word best describes the hypothalamus?
A) processor
B) reflexor
C) regulator
D) transmitter
C
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The research of James A. Thompson and his coworkers shows that sustainable human stem cell
colonies can be established. As experimental evidence of this, they showed that
a. human stem cell colonies could survive outside the body if exposed to a bed of mouse fibroblasts. b. stem cell telomerase remained inactive in established cell colonies. c. cultured stem cells could differentiate when injected into apes. d. cultured stem cells could differentiate when injected into chicken embryos. e. human stem cells could on differentiate into muscle tissue.
The surface defenses of the body consist of the ______ and the mucous membranes lining the digestive and respiratory tracts.
A. bone marrow B. skin C. T cells D. lymphocytes
Which event occurs in mitosis but NOT in meiosis?
a. bipolar spindle formation b. tethering of chromosomes to microtubules c. chromosomes dragged to poles by microtubules d. nuclear envelopes breaking up and reforming e. none of these
cirrhosis most commonly effects what group of people
What will be an ideal response?