The Southern Hemisphere lacks which of the following biomes?
a. tundra
b. taiga
c. savanna
d. tundra and taiga
e. tundra and savanna
D
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Choanoflagellate adhesion proteins are similar to those of animals, and researchers have discovered that even solitary choanoflagellates have these proteins. What is the current hypothesis about the relation between the choanoflagellate adhesion proteins and animal adhesion proteins?
What will be an ideal response?
Which of these shows the correct order of preference for how we deal with waste?
A.Reuse, reduce, recycle, refuse B.Refuse, reduce, reuse, recycle C.Recycle, reuse, refuse, reduce D.Reduce, recycle, refuse, reuse
Hemoglobin is one of the major buffer systems in the body.
a. true b. false
Target cells respond to hormones because ________.
a. they sit next to the cell that makes the hormone b. they made the hormone they are responding to c. they have receptors for that hormone d. all cells in the body respond to all hormones