What discoveries in the fossil record led to
questioning the concept that species didn’t
change?
a. the oldest layers contain fossils of simpler
organisms
b. more recent layers contain fossils more
similar to existing species
c. many fossils were found of extinct animals
d. more recent layers contain fossils that are
more complex than earlier ones
e. all of these are discoveries in the fossil
record that led to questioning the concept
that species didn’t change
E
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If you force inspiration, how much more air than the tidal volume can you breathe in?
A. about two times the tidal volume B. about three times the tidal volume C. about five times the tidal volume D. about six times the tidal volume E. about four times the tidal volume
Match the following items with the correct phrases.
_______1. Fixed or tissue ____________________ are called histiocytes. _______2. Like mast cells, these cells release histamine and other chemical mediators during type I hypersensitivity reactions. _______3. Increased numbers of these cells are found in the peripheral blood stream during allergic reactions and helminth infections. _______4. These cells are also called polymorphonuclear leukocytes, polys, or PMNs. _______5. These cells are monocytes rather than granulocytes. a. basophils b. eosinophils c. macrophages d. neutrophils
Low intensity, long duration exercise results in ____
a. decreased capillary growth b. decreased number of mitochondria c. increased white fibers d. increased amounts of myoglobin e. no change in muscles
Bioluminescence develops when
A) population density is high. B) oxygen is depleted. C) ambient light is low. D) the host induces the bioluminescence genes.