The human body temperature is 37o Celsius. If a person goes outside on a very cold day, the temperature will still be
close to 37 o Celsius. This is an example of ____.
a. pluripotency
b. homology
c. homeostasis
d. differentiation
e. regeneration
ANSWER: c
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What technique can be used to detect genetic defects in early stage embryos, prior to implantation?
a. genetic screening b. chorionic villus sampling c. PGD d. amniocentesis e. micromanipulation
Select all of the examples of cytokines, the signaling molecules produced by T lymphocytes, macrophages, and other cells.
Biologists identify __________, which are larger
regions characterized by their physical characteristics as well as the species in them. Fill in the blank(s) with the appropriate word(s).
Consider the chemical reaction for photosynthesis as a redox reaction. Which of the following is reduced/oxidized?
a. Carbon dioxide is reduced to glucose and water is oxidized to oxygen. b. Carbon dioxide is oxidized to glucose and water is reduced to oxygen. c. Carbon dioxide is reduced to oxygen and water is oxidized to glucose. d. Carbon dioxide is oxidized to oxygen and water is reduced to glucose.