Low body temperature triggers adaptive responses to conserve heat. Once the integrating center detects that body temperature has risen, it will decrease these responses. What does this exemplify?
A. adaptation
B. negative feedback
C. acclimatization
D. positive feedback
Answer: B
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The information that directs the development of the fertilized egg is present in all of the following
EXCEPT
a. information in egg nucleus b. information in sperm nucleus c. mRNA in egg cytoplasm d. proteins in egg cytoplasm e. sperm cytoplasm
Generally, r-selected organisms exhibit:a
short life spans and early maturity. b. long life spans and extended parental care of offspring. c. long development time to maturity, but small body size. d. large body size and extended parental care of offspring. e. large body size, but short life spans.
Legumes, such as beans or peas
A) form mutualistic associations with nitrogen-fixing bacteria. B) form mycorrhizal associations to increase nitrogen fixation in the soil. C) form parasitic relationships with other photosynthetic plants. D) fix N2 from the atmosphere in their leaves.
You inoculated a thioglycollate broth with an unknown bacterium and after overnight incubation you observe that growth is restricted to the area at the bottom of the tube. your bacterium is exhibiting a growth pattern characteristic of an
What will be an ideal response?